WO2024171780A1 - 医療支援装置、内視鏡、医療支援方法、及びプログラム - Google Patents
医療支援装置、内視鏡、医療支援方法、及びプログラム Download PDFInfo
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- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
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- A61B1/012—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor characterised by internal passages or accessories therefor
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- G06T2207/30004—Biomedical image processing
- G06T2207/30096—Tumor; Lesion
Definitions
- the technology disclosed herein relates to a medical support device, an endoscope, a medical support method, and a program.
- JP2021-178110A discloses an information processing device located between a radiography control device and an image management device.
- the information processing device described in JP2021-178110A includes an abnormality detection means for detecting abnormalities in medical images received from the radiography control device, and a control means for determining the transmission content or transmission destination of the medical images or the detection results based on the detection results by the abnormality detection means.
- the abnormality detection means generates a lesion name, lesion location, lesion size, lesion category, malignancy, or a malignancy map from the medical image.
- the control means assigns a priority to the medical image when displaying the medical image based on the detection result, and transmits the priority to the image management device in association with the medical image.
- International Publication No. 2020/188682 discloses a diagnostic support device.
- the diagnostic support device described in International Publication No. 2020/188682 has an abnormal symptom identification unit, a lesion extraction function unit, and a function control unit.
- the abnormal symptom identification unit is configured to perform processing to identify an abnormal symptom appearing in an organ to be diagnosed based on at least one of physical information including one or more pieces of information capable of estimating the state of the subject's organ to be diagnosed and an endoscopic image obtained by capturing an image of the organ to be diagnosed.
- the lesion extraction function unit is configured to have a plurality of different lesion extraction units specialized for each abnormal symptom that may appear in the organ to be diagnosed, as a lesion extraction process for extracting a lesion candidate region from the endoscopic image.
- the lesion extraction function control unit is configured to perform processing to select one lesion extraction unit corresponding to one abnormal symptom identified by the abnormal symptom identification unit from the lesion extraction units of the plurality of lesions, and to control the lesion extraction function unit to cause one lesion extraction unit to perform lesion extraction processing.
- the diagnosis support device described in International Publication No. 2020/188682 also has a display control unit.
- the display control unit is configured to perform processing for displaying, on a display device, an endoscopic image together with information indicating the position of a lesion candidate region extracted by one of the lesion extraction units.
- One embodiment of the technology disclosed herein provides a medical support device, endoscope, medical support method, and program that can enable a user to grasp the size of an observation area that is expected to be of great interest to the user when multiple observation areas are shown in a medical image.
- a first aspect of the technology disclosed herein is a medical support device that includes a processor that recognizes the positions of multiple observation regions in a medical image based on the medical image showing the multiple observation regions, determines the priority of the multiple observation regions based on their positions, measures the size of the multiple observation regions, and outputs the size based on the priority.
- a second aspect of the technology disclosed herein is a medical support device according to the first aspect, in which the processor outputs the size of each observation region in order of priority.
- the third aspect of the technology disclosed herein is a medical support device according to the second aspect, in which the size of each observation region is output each time an instruction is given.
- a fourth aspect of the technology disclosed herein is a medical support device according to any one of the first to third aspects, in which the size is output by displaying the size on a screen.
- the fifth aspect of the technology disclosed herein is a medical support device according to the fourth aspect, in which the screen displays the size in a display mode according to the priority order.
- a sixth aspect of the technology disclosed herein is a medical support device according to the fourth or fifth aspect, in which a medical image is displayed on the screen and the size is displayed within the medical image.
- a seventh aspect of the technology disclosed herein is a medical support device according to any one of the fourth to sixth aspects, in which a medical image is displayed on a screen, and area identification information capable of identifying an observation target area corresponding to the output size is displayed within the medical image.
- An eighth aspect of the technology disclosed herein is a medical support device according to any one of the fourth to seventh aspects, in which the screen includes a first display area and a second display area, the first display area displays a medical image, the second display area displays a map showing the distribution of the positions of each observation target area, and area identification information capable of identifying the observation target area corresponding to the output size is displayed within the map.
- a ninth aspect of the technology disclosed herein is a medical support device according to any one of the fourth to eighth aspects, in which the size displayed on the screen is switched according to a priority order.
- a tenth aspect of the technology disclosed herein is a medical support device according to the ninth aspect, in which the size of what is displayed on the screen is changed each time an instruction is given.
- An eleventh aspect of the technology disclosed herein is a medical support device according to any one of the first to tenth aspects, in which the location is recognized using an AI-based method, and the priority is determined based on the confidence level obtained from the AI.
- a twelfth aspect of the technology disclosed herein is a medical support device according to any one of the first to eleventh aspects, in which the closer the location is to the center of the medical image, the higher the priority.
- a thirteenth aspect of the technology disclosed herein is a medical support device according to any one of the first to twelfth aspects, in which the processor acquires depths of multiple observation target regions, and the priority is determined based on the positions and depths.
- a fourteenth aspect of the technology disclosed herein is a medical support device according to any one of the first to thirteenth aspects, in which the processor recognizes the type of observation target area based on the medical image, and the priority is determined based on the position and type.
- a fifteenth aspect of the technology disclosed herein is a medical support device according to any one of the first to fourteenth aspects, in which the processor measures the size according to a priority order.
- a sixteenth aspect of the technology disclosed herein is a medical support device according to any one of the first to fifteenth aspects, in which the medical image is an endoscopic image obtained by capturing an image using an endoscope.
- a seventeenth aspect of the technology disclosed herein is a medical support device according to any one of the first to sixteenth aspects, in which the observation target area is a lesion.
- An 18th aspect of the technology disclosed herein is an endoscope that includes a medical support device according to any one of the first to seventeenth aspects, and a module that is inserted into the body including an area to be observed and captures an image of the area to be observed to obtain a medical image.
- a nineteenth aspect of the technology disclosed herein is a medical support method that includes recognizing the positions of multiple observation regions in a medical image based on the medical image showing the multiple observation regions, determining the priority of the multiple observation regions based on the positions, measuring the size of the multiple observation regions, and outputting the size based on the priority.
- a twentieth aspect of the technology disclosed herein is a program for causing a computer to execute a medical support process that includes recognizing the positions of multiple observation regions in a medical image based on the medical image showing the multiple observation regions, determining the priority of the multiple observation regions based on their positions, measuring the size of the multiple observation regions, and outputting the size based on the priority.
- FIG. 1 is a conceptual diagram showing an example of an aspect in which an endoscope system is used.
- 1 is a conceptual diagram showing an example of an overall configuration of an endoscope.
- 2 is a block diagram showing an example of a hardware configuration of an electrical system of the endoscope;
- 2 is a block diagram showing an example of the main functions of a processor included in the endoscope and an example of information stored in an NVM.
- FIG. FIG. 4 is a conceptual diagram showing an example of processing contents of a recognition unit and a control unit.
- FIG. 13 is a conceptual diagram illustrating an example of a process performed by a determination unit.
- FIG. 4 is a conceptual diagram showing an example of processing contents of a measurement unit.
- FIG. 11 is a conceptual diagram showing an example of an aspect in which an endoscopic image is displayed in a first display area and the size is displayed within a map in a second display area.
- FIG. 13 is a flowchart showing an example of the flow of a medical support process. 13 is a conceptual diagram showing an example of how the display contents in the map are switched in accordance with an instruction accepted by the acceptance device 64.
- FIG. 13 is a conceptual diagram showing a first modified example of the processing content of the determination unit.
- FIG. 13 is a conceptual diagram showing a second modified example of the processing content of the determination unit.
- FIG. 13 is a conceptual diagram illustrating an example of a segmentation image displayed in a map surrounded by a circumscribing rectangular frame.
- FIG. 13 is a conceptual diagram showing an example of a manner in which size and text information is displayed from within a map to outside the map in a pop-up manner, and the size and text information is displayed on the screen in a display size according to priority.
- 11 is a conceptual diagram showing an example in which a lesion shown in an endoscopic image is surrounded by a circumscribing rectangular frame.
- FIG. FIG. 13 is a conceptual diagram showing an example of an output destination of the size.
- CPU is an abbreviation for "Central Processing Unit”.
- GPU is an abbreviation for "Graphics Processing Unit”.
- RAM is an abbreviation for "Random Access Memory”.
- NVM is an abbreviation for "Non-volatile memory”.
- EEPROM is an abbreviation for "Electrically Erasable Programmable Read-Only Memory”.
- ASIC is an abbreviation for "Application Specific Integrated Circuit”.
- PLD is an abbreviation for "Programmable Logic Device”.
- FPGA is an abbreviation for "Field-Programmable Gate Array”.
- SoC is an abbreviation for "System-on-a-chip”.
- SSD is an abbreviation for "Solid State Drive”.
- USB is an abbreviation for "Universal Serial Bus”.
- HDD is an abbreviation for "Hard Disk Drive”.
- EL is an abbreviation for "Electro-Luminescence”.
- CMOS is an abbreviation for "Complementary Metal Oxide Semiconductor”.
- CCD is an abbreviation for "Charge Coupled Device”.
- AI is an abbreviation for "Artificial Intelligence”.
- BLI is an abbreviation for "Blue Light Imaging”.
- LCI is an abbreviation for "Linked Color Imaging”.
- I/F is an abbreviation for "Interface”.
- SSL is an abbreviation for "Sessile Serrated Lesion”.
- NP is an abbreviation for "Neoplastic Polyp”.
- HP is an abbreviation for "Hyperplastic Polyp”.
- an endoscopic system 10 includes an endoscope 12 and a display device 14.
- the endoscope 12 is used by a doctor 16 in an endoscopic examination.
- the endoscopic examination is assisted by staff such as a nurse 17.
- the endoscope 12 is an example of an "endoscope" according to the technology disclosed herein.
- the endoscope 12 is communicatively connected to a communication device (not shown), and information obtained by the endoscope 12 is transmitted to the communication device.
- a communication device is a server and/or a client terminal (e.g., a personal computer and/or a tablet terminal, etc.) that manages various information such as electronic medical records.
- the communication device receives the information transmitted from the endoscope 12 and executes processing using the received information (e.g., processing to store the information in an electronic medical record, etc.).
- the endoscope 12 includes an endoscope body 18.
- the endoscope 12 is a device for performing medical treatment on the large intestine 22 contained within the body of a subject 20 (e.g., a patient) using the endoscope body 18.
- the large intestine 22 is the object observed by the doctor 16.
- the endoscope body 18 is inserted into the large intestine 22 of the subject 20.
- the endoscope 12 causes the endoscope body 18 inserted into the large intestine 22 of the subject 20 to take images of the inside of the large intestine 22 inside the subject 20's body, and also performs various medical procedures on the large intestine 22 as necessary.
- the endoscope 12 captures images of the inside of the large intestine 22 of the subject 20, and obtains and outputs images showing the state of the inside of the body.
- the endoscope 12 is an endoscope with an optical imaging function that captures images of reflected light obtained by irradiating light 26 inside the large intestine 22 and reflecting it off the intestinal wall 24 of the large intestine 22.
- an endoscopic examination of the large intestine 22 is shown here as an example, this is merely one example, and the technology disclosed herein can also be applied to endoscopic examination of hollow organs such as the esophagus, stomach, duodenum, or trachea.
- the endoscope 12 is equipped with a control device 28, a light source device 30, and an image processing device 32.
- the control device 28, the light source device 30, and the image processing device 32 are installed on a wagon 34.
- the wagon 34 has multiple stands arranged in the vertical direction, and the image processing device 32, the control device 28, and the light source device 30 are installed from the lower stand to the upper stand.
- the display device 14 is installed on the top stand of the wagon 34.
- the control device 28 controls the entire endoscope 12. Under the control of the control device 28, the image processing device 32 performs various image processing on the images obtained by imaging the intestinal wall 24 by the endoscope body 18.
- the display device 14 displays various information including images. Examples of the display device 14 include a liquid crystal display and an EL display. A tablet terminal with a display may be used in place of the display device 14 or together with the display device 14.
- a screen 35 is displayed on the display device 14.
- the screen 35 includes a plurality of display areas.
- the plurality of display areas are arranged side by side within the screen 35.
- a first display area 36 and a second display area 38 are shown as examples of the plurality of display areas.
- the size of the first display area 36 is larger than the size of the second display area 38.
- the first display area 36 is used as a main display area, and the second display area 38 is used as a sub display area.
- the screen 35 is an example of a "screen” according to the technology of the present disclosure
- the first display area 36 is an example of a "first display area” according to the technology of the present disclosure
- the second display area 38 is an example of a "second display area” according to the technology of the present disclosure.
- the first display area 36 displays an endoscopic image 40.
- the endoscopic image 40 is an image acquired by imaging the intestinal wall 24 in the large intestine 22 of the subject 20 by the endoscope body 18.
- an image showing the intestinal wall 24 is shown as an example of the endoscopic image 40.
- the intestinal wall 24 shown in the endoscopic image 40 includes multiple lesions 42 (e.g., three lesions 42 in the example shown in FIG. 1) as multiple regions of interest (i.e., multiple observation target regions) that are focused on by the doctor 16, and the doctor 16 can visually recognize the state of the intestinal wall 24 including the multiple lesions 42 through the endoscopic image 40.
- lesions 42 there are various types of lesions 42, and the types of lesions 42 include, for example, neoplastic polyps (e.g., NPs or SSLs belonging to NPs) and non-neoplastic polyps (e.g., HPs).
- neoplastic polyps e.g., NPs or SSLs belonging to NPs
- non-neoplastic polyps e.g., HPs
- the endoscopic image 40 is an example of a "medical image” and an “endoscopic image” according to the technology of the present disclosure.
- the lesion 42 is an example of an "observation target area” and a “lesion” according to the technology of the present disclosure.
- the lesion 42 is illustrated, but the technology of the present disclosure is not limited to this, and the multiple areas of interest (i.e., the multiple observation target areas) gazed upon by the doctor 16 may be multiple organs (e.g., the bile duct opening and the pancreatic duct opening contained in the duodenal papilla), multiple marked areas, artificial treatment tools (e.g., artificial clips), or multiple treated areas (e.g., multiple areas where traces of removal of polyps, etc. remain), etc.
- organs e.g., the bile duct opening and the pancreatic duct opening contained in the duodenal papilla
- artificial treatment tools e.g., artificial clips
- treated areas e.g., multiple areas where traces of removal of polyps, etc. remain
- the multiple areas of interest i.e., the multiple observation target areas
- gazed upon by the doctor 16 may be multiple combinations of at least one lesion 42, at least one organ, at least one marked area, at least one artificial treatment tool, and at least one treated area.
- a moving image is displayed in the first display area 36.
- the endoscopic image 40 displayed in the first display area 36 is one frame included in a moving image that includes multiple frames in chronological order. In other words, multiple frames of the endoscopic image 40 are displayed in the first display area 36 at a default frame rate (e.g., 30 frames/second or 60 frames/second, etc.).
- a moving image displayed in the first display area 36 is a moving image in a live view format.
- the live view format is merely one example, and the moving image may be temporarily stored in a memory or the like and then displayed, such as a moving image in a post-view format.
- each frame contained in a moving image for recording stored in a memory or the like may be reproduced and displayed in the first display area 36 as an endoscopic image 40.
- the second display area 38 is adjacent to the first display area 36, and is displayed in the lower right corner of the screen 35 when viewed from the front.
- the display position of the second display area 38 may be anywhere within the screen 35 of the display device 14, but it is preferable that it is displayed in a position that can be compared with the endoscopic image 40.
- a plurality of segmentation images 44 are displayed in the second display area 38.
- the segmentation images 44 are image areas that identify the position in the endoscopic image 40 of a lesion 42 recognized by performing object recognition processing using AI segmentation on the endoscopic image 40.
- the multiple segmentation images 44 displayed in the second display area 38 are images that correspond to the endoscopic image 40 and are referenced by the physician 16 to identify the location of the lesion 42 within the endoscopic image 40.
- multiple segmentation images 44 are shown as an example here, when a lesion 42 is recognized by performing object recognition processing using AI on the endoscopic image 40 using a bounding box method, multiple bounding boxes are displayed instead of the multiple segmentation images 44. Also, multiple segmentation images 44 and multiple bounding boxes may be used in combination. Note that the segmentation image 44 and the bounding boxes are merely examples, and any image may be used as long as it is possible to identify the positional relationship in which multiple lesions 42 are captured in the endoscopic image 40.
- the endoscope body 18 includes an operating section 46 and an insertion section 48.
- the insertion section 48 is partially curved by operating the operating section 46.
- the insertion section 48 is inserted into the large intestine 22 (see FIG. 1) while curving in accordance with the shape of the large intestine 22 (see FIG. 1) in accordance with the operation of the operating section 46 by the doctor 16 (see FIG. 1).
- the tip 50 of the insertion section 48 is provided with a camera 52, a lighting device 54, and an opening 56 for a treatment tool.
- the camera 52 and the lighting device 54 are provided on the tip surface 50A of the tip 50. Note that, although an example in which the camera 52 and the lighting device 54 are provided on the tip surface 50A of the tip 50 is given here, this is merely one example, and the camera 52 and the lighting device 54 may be provided on the side surface of the tip 50, so that the endoscope 12 is configured as a side-viewing endoscope.
- the camera 52 is a device that captures an image of the inside of the subject 20 (e.g., inside the large intestine 22) to obtain an endoscopic image 40 as a medical image.
- One example of the camera 52 is a CMOS camera. However, this is merely one example, and other types of cameras such as a CCD camera may also be used.
- the camera 52 is an example of a "module" related to the technology of the present disclosure.
- the illumination device 54 has illumination windows 54A and 54B.
- the illumination device 54 irradiates light 26 (see FIG. 1) through the illumination windows 54A and 54B.
- Examples of the type of light 26 irradiated from the illumination device 54 include visible light (e.g., white light) and non-visible light (e.g., near-infrared light).
- the illumination device 54 also irradiates special light through the illumination windows 54A and 54B. Examples of the special light include light for BLI and/or light for LCI.
- the camera 52 captures images of the inside of the large intestine 22 by optical techniques while the light 26 is irradiated inside the large intestine 22 by the illumination device 54.
- the treatment tool opening 56 is an opening for allowing the treatment tool 58 to protrude from the tip 50.
- the treatment tool opening 56 is also used as a suction port for sucking blood and internal waste, and as a delivery port for delivering fluids.
- the operating section 46 is formed with a treatment tool insertion port 60, and the treatment tool 58 is inserted into the insertion section 48 from the treatment tool insertion port 60.
- the treatment tool 58 passes through the insertion section 48 and protrudes to the outside from the treatment tool opening 56.
- a puncture needle is shown as the treatment tool 58 protruding from the treatment tool opening 56.
- a puncture needle is shown as the treatment tool 58, but this is merely one example, and the treatment tool 58 may be a grasping forceps, a papillotomy knife, a snare, a catheter, a guidewire, a cannula, and/or a puncture needle with a guide sheath, etc.
- the endoscope body 18 is connected to the control device 28 and the light source device 30 via a universal cord 62.
- the control device 28 is connected to an image processing device 32 and a reception device 64.
- the image processing device 32 is also connected to the display device 14. In other words, the control device 28 is connected to the display device 14 via the image processing device 32.
- the image processing device 32 is shown here as an external device for expanding the functions performed by the control device 28, an example is given in which the control device 28 and the display device 14 are indirectly connected via the image processing device 32, but this is merely one example.
- the display device 14 may be directly connected to the control device 28.
- the function of the image processing device 32 may be included in the control device 28, or the control device 28 may be equipped with a function to cause a server (not shown) to execute the same processing as that executed by the image processing device 32 (for example, the medical support processing described below) and to receive and use the results of the processing by the server.
- the reception device 64 receives instructions from the doctor 16 and outputs the received instructions as an electrical signal to the control device 28.
- Examples of the reception device 64 include a keyboard, a mouse, a touch panel, a foot switch, a microphone, and/or a remote control device.
- the control device 28 controls the light source device 30, exchanges various signals with the camera 52, and exchanges various signals with the image processing device 32.
- the light source device 30 emits light under the control of the control device 28, and supplies the light to the illumination device 54.
- the illumination device 54 has a built-in light guide, and the light supplied from the light source device 30 passes through the light guide and is irradiated from illumination windows 54A and 54B.
- the control device 28 causes the camera 52 to capture an image, acquires an endoscopic image 40 (see FIG. 1) from the camera 52, and outputs it to a predetermined output destination (e.g., the image processing device 32).
- the image processing device 32 performs various image processing on the endoscopic image 40 input from the control device 28.
- the image processing device 32 outputs the endoscopic image 40 that has been subjected to various image processing to a predetermined output destination (e.g., the display device 14).
- the endoscopic image 40 output from the control device 28 is output to the display device 14 via the image processing device 32
- the control device 28 and the display device 14 may be connected, and the endoscopic image 40 that has been subjected to image processing by the image processing device 32 may be displayed on the display device 14 via the control device 28.
- the control device 28 includes a computer 66, a bus 68, and an external I/F 70.
- the computer 66 includes a processor 72, a RAM 74, and an NVM 76.
- the processor 72, the RAM 74, the NVM 76, and the external I/F 70 are connected to the bus 68.
- the processor 72 has at least one CPU and at least one GPU, and controls the entire control device 28.
- the GPU operates under the control of the CPU, and is responsible for executing various graphic processing operations and performing calculations using neural networks.
- the processor 72 may be one or more CPUs with integrated GPU functionality, or one or more CPUs without integrated GPU functionality.
- the computer 66 is equipped with one processor 72, but this is merely one example, and the computer 66 may be equipped with multiple processors 72.
- RAM 74 is a memory in which information is temporarily stored, and is used as a work memory by processor 72.
- NVM 76 is a non-volatile storage device that stores various programs and various parameters, etc.
- An example of NVM 76 is a flash memory (e.g., EEPROM and/or SSD). Note that flash memory is merely one example, and other non-volatile storage devices such as HDDs may also be used, or a combination of two or more types of non-volatile storage devices may also be used.
- the external I/F 70 is responsible for transmitting various types of information between the processor 72 and one or more devices (hereinafter also referred to as "first external devices") that exist outside the control device 28.
- first external devices One example of the external I/F 70 is a USB interface.
- the camera 52 is connected to the external I/F 70 as one of the first external devices, and the external I/F 70 is responsible for the exchange of various information between the camera 52 and the processor 72.
- the processor 72 controls the camera 52 via the external I/F 70.
- the processor 72 also acquires, via the external I/F 70, an endoscopic image 40 (see FIG. 1) obtained by the camera 52 capturing an image of the inside of the large intestine 22 (see FIG. 1).
- the light source device 30 is connected to the external I/F 70 as one of the first external devices, and the external I/F 70 is responsible for the exchange of various information between the light source device 30 and the processor 72.
- the light source device 30 supplies light to the lighting device 54 under the control of the processor 72.
- the lighting device 54 irradiates the light supplied from the light source device 30.
- the external I/F 70 is connected to the reception device 64 as one of the first external devices, and the processor 72 acquires instructions received by the reception device 64 via the external I/F 70 and executes processing according to the acquired instructions.
- the image processing device 32 includes a computer 78 and an external I/F 80.
- the computer 78 includes a processor 82, a RAM 84, and an NVM 86.
- the processor 82, the RAM 84, the NVM 86, and the external I/F 80 are connected to a bus 88.
- the image processing device 32 is an example of a "medical support device” according to the technology of the present disclosure
- the computer 78 is an example of a "computer” according to the technology of the present disclosure
- the processor 82 is an example of a "processor" according to the technology of the present disclosure.
- computer 78 i.e., processor 82, RAM 84, and NVM 86
- processor 82, RAM 84, and NVM 86 is basically the same as the hardware configuration of computer 66, so a description of the hardware configuration of computer 78 will be omitted here.
- the external I/F 80 is responsible for transmitting various types of information between the processor 82 and one or more devices (hereinafter also referred to as "second external devices") that exist outside the image processing device 32.
- second external devices One example of the external I/F 80 is a USB interface.
- the control device 28 is connected to the external I/F 80 as one of the second external devices.
- the external I/F 70 of the control device 28 is connected to the external I/F 80.
- the external I/F 80 is responsible for the exchange of various information between the processor 82 of the image processing device 32 and the processor 72 of the control device 28.
- the processor 82 acquires an endoscopic image 40 (see FIG. 1) from the processor 72 of the control device 28 via the external I/Fs 70 and 80, and performs various image processing on the acquired endoscopic image 40.
- the display device 14 is connected to the external I/F 80 as one of the second external devices.
- the processor 82 controls the display device 14 via the external I/F 80 to cause the display device 14 to display various information (e.g., an endoscopic image 40 that has been subjected to various image processing).
- the doctor 16 checks the endoscopic image 40 via the display device 14 and determines whether or not medical treatment is required for the multiple lesions 42 shown in the endoscopic image 40, and performs medical treatment on the multiple lesions 42 if necessary.
- the size of the multiple lesions 42 is an important factor in determining whether or not medical treatment is required.
- the lesion 42 in which the doctor 16 is interested varies depending on the position of the lesion 42 in the endoscopic image 40. Presenting the size of the lesion 42 that the doctor 16 is less interested in to the doctor 16 preferentially, or presenting the sizes of the lesions 42 that the doctor 16 is more interested in to the doctor 16 in a state in which the sizes of the lesions 42 that the doctor 16 is less interested in to the doctor 16 cannot be distinguished, which can be a factor in inefficiency and confusion in performing an endoscopic examination.
- medical support processing is performed by the processor 82 of the image processing device 32, as shown in FIG. 4.
- NVM 86 stores a medical support program 90.
- the medical support program 90 is an example of a "program" according to the technology of the present disclosure.
- the processor 82 reads the medical support program 90 from NVM 86 and executes the read medical support program 90 on RAM 84 to perform medical support processing.
- the medical support processing is realized by the processor 82 operating as a recognition unit 82A, a determination unit 82B, a measurement unit 82C, and a control unit 82D in accordance with the medical support program 90 executed on RAM 84.
- the NVM 86 stores a recognition model 92 and a distance derivation model 94.
- the recognition model 92 and the distance derivation model 94 are examples of "AI" according to the technology of the present disclosure.
- the recognition model 92 is used by the recognition unit 82A
- the distance derivation model 94 is used by the measurement unit 82C.
- the recognition unit 82A and the control unit 82D acquire the endoscopic image 40 generated by the camera 52 capturing images at an imaging frame rate (e.g., several tens of frames per second) from the camera 52 on a frame-by-frame basis.
- an imaging frame rate e.g., several tens of frames per second
- the control unit 82D displays the endoscopic image 40 as a live view image in the first display area 36. That is, each time the control unit 82D acquires an endoscopic image 40 from the camera 52 frame by frame, it displays the acquired endoscopic image 40 in the first display area 36 in sequence according to the display frame rate (e.g., several tens of frames per second).
- the display frame rate e.g., several tens of frames per second.
- the recognition unit 82A performs a recognition process 96 on the endoscopic image 40 acquired from the camera 52 to recognize the position and type of the lesion 42 in the endoscopic image 40 (i.e., the position of the lesion 42 shown in the endoscopic image 40).
- the recognition process 96 is performed by the recognition unit 82A on the acquired endoscopic image 40 each time the endoscopic image 40 is acquired.
- the recognition process 96 is an object recognition process using an AI segmentation method.
- the recognition process 96 is performed using the recognition model 92.
- the recognition model 92 is a trained model for object recognition using an AI segmentation method, and is optimized by performing machine learning on the neural network using the first training data.
- the first training data is a data set including multiple data (i.e., multiple frames of data) in which the first example data and the first correct answer data are associated with each other.
- the first example data is an image corresponding to the endoscopic image 40.
- the first correct answer data is correct answer data (i.e., annotation) for the first example data.
- an annotation that identifies the position and type of a lesion that appears in the image used as the first example data is used as an example of the first correct answer data.
- the recognition unit 82A acquires an endoscopic image 40 from the camera 52 and inputs the acquired endoscopic image 40 to the recognition model 92.
- the recognition model 92 identifies the position of the segmentation image 44 identified by the segmentation method as the position of the lesion 42 appearing in the input endoscopic image 40, and outputs position identification information 98 that can identify the position of the segmentation image 44.
- An example of the position identification information 98 is coordinates that identify the segmentation image 44 in the endoscopic image 40.
- the recognition model 92 recognizes the type of the lesion 42 appearing in the input endoscopic image 40 (for example, the name of the lesion (for example, NP, SSL, HP, etc.)) and outputs type information 100 that indicates the recognized type.
- the position identification information 98 and type information 100 are associated with the segmentation image 44.
- the control unit 82D displays a map 102 in the second display area 38, which shows the distribution of the positions of the multiple lesions 42 for each endoscopic image 40, according to the position identification information 98 and the multiple segmentation images 44.
- the map 102 is created by the recognition unit 82A.
- the distribution of the positions of the multiple lesions 42 for each endoscopic image 40 in the map 102 is represented by the multiple segmentation images 44 obtained for each endoscopic image 40 by the recognition unit 82A.
- the map 102 displayed in the second display area 38 is updated according to the display frame rate applied to the first display area 36. That is, the display of the multiple segmentation images 44 in the second display area 38 is updated in synchronization with the display timing of the endoscopic image 40 displayed in the first display area 36.
- map 102 is an example of a "map" according to the technology disclosed herein.
- the determination unit 82B acquires a map 102 including position identification information 98, type information 100, and multiple segmentation images 44 from the recognition unit 82A each time the recognition unit 82A performs a recognition process 96 (see FIG. 5) for each endoscopic image 40.
- the determination unit 82B determines a priority order 104 for the multiple lesions 42 based on the position identification information 98 acquired from the recognition unit 82A.
- the priority order 104 is a ranking assigned to each of the multiple lesions 42 according to priority (in other words, according to importance), and is determined so that a high ranking is assigned to a lesion 42 that is expected to be of high interest to the doctor 16 and a low ranking is assigned to a lesion 42 that is expected to be of low interest to the doctor 16.
- the priority order 104 is determined by the determination unit 82B based on the location identification information 98 and type information 100.
- the determination unit 82B first derives a position weight 106 based on the position identification information 98, and derives a type weight 108 based on the type information 100.
- the position weight 106 is the weight of the position of the lesion 42 in the endoscopic image 40 (i.e., the priority (in other words, the importance)). For example, the closer to the center of the endoscopic image 40, the larger the position weight 106.
- the position weight 106 is a value determined within the range of "0 ⁇ x ⁇ 0.5".
- a first example of a means for deriving the position weight 106 from the position identification information 98 is a means that uses an arithmetic expression in which the position identification information 98 is a dependent variable and the position weight 106 is an independent variable.
- a second example of a means for deriving the position weight 106 from the position identification information 98 is a means that uses a table in which the position identification information 98 is an input and the position weight 106 is an output.
- the type weight 108 is the type of the lesion 42 indicated by the type information 100 (i.e., the priority (in other words, the importance)). For example, the more severe the type of the lesion 42, the larger the type weight 108.
- the type weight 108 of a neoplastic polyp is larger than the type weight 108 of a non-neoplastic polyp.
- the type weight 108 is a value determined within the range of "0 ⁇ y ⁇ 0.5".
- a first example of a means for deriving the type weight 108 from the type information 100 is a means using a table that uses the type information 100 as input and the type weight 108 as output.
- a second example of a means for deriving the type weight 108 from the type information 100 is a means using an arithmetic expression that uses the type information 100 as a dependent variable and the type weight 108 as an independent variable, assuming that the type information 100 is expressed by a variable that can identify the type of the lesion 42.
- the determination unit 82B calculates the total weight 110 based on the position weight 106 and the type weight 108.
- the total weight 110 is shown as the sum of the position weight 106 and the type weight 108.
- the sum of the position weight 106 and the type weight 108 is merely an example, and the product of the position weight 106 and the type weight 108 may be used.
- at least one of the position weight 106 and the type weight 108 may be multiplied by a coefficient.
- the coefficient may be a fixed value or a variable value.
- the coefficient may be determined according to various conditions (e.g., the type of endoscopic examination, the specifications of the endoscope 12, and/or the user of the endoscope 12, etc.), or may be determined according to instructions given by the doctor 16 or the like via the reception device 64.
- the position weight 106 itself and/or the type weight 108 itself may be changed in a similar manner.
- the determination unit 82B determines the priority order 104 of the multiple lesions 42 based on the total weight 110 calculated for each of the multiple lesions 42.
- the priority order 104 is higher as the total weight 110 is larger. For example, when the sum of the position weight 106 and the type weight 108 is used as the total weight 110, when the position weight 106 is focused on, the total weight 110 is larger as the position weight 106 is larger, and the priority order 104 is higher accordingly.
- the closer to the center of the endoscopic image 40 the larger the position weight 106. Therefore, the closer the position of the lesion 42 is to the center of the endoscopic image 40, the higher the priority order 104 is.
- the total weight 110 is larger as the type weight 108 is larger, and the priority order 104 is higher accordingly.
- the determination unit 82B assigns the determined priority order 104 to the multiple lesions 42.
- the assignment of priority order 104 to the multiple lesions 42 is realized by assigning the priority order 104 determined by the determination unit 82B to each of the multiple segmentation images 44 corresponding to the multiple lesions 42.
- the measurement unit 82C measures the size 112 of the lesion 42 based on the endoscopic image 40 acquired from the camera 52 (e.g., the endoscopic image 40 used by the recognition unit 82A to obtain the multiple segmentation images 44, the position identification information 98, and the type information 100 used by the determination unit 82B).
- the measurement unit 82C measures the size 112 of the multiple lesions 42 according to the priority order 104 determined by the determination unit 82B. That is, the size 112 of the lesion 42 is measured in order from the lesion 42 with the highest priority order 104 to the lesion 42 with the lowest priority order 104.
- the measuring unit 82C acquires distance information 114 of the multiple lesions 42 based on the endoscopic image 40 acquired from the camera 52.
- the distance information 114 is information indicating the distance from the camera 52 (i.e., the observation position) to the intestinal wall 24 including the lesion 42 (see FIG. 1).
- the distance from the camera 52 to the intestinal wall 24 including the lesion 42 is an example of "depth" according to the technology of the present disclosure.
- the distance from the camera 52 to the intestinal wall 24 including the lesion 42 is illustrated here, this is merely an example, and instead of distance, a numerical value indicating the depth from the camera 52 to the intestinal wall 24 including the lesion 42 (e.g., multiple numerical values that define the depth in stages (e.g., numerical values ranging from several stages to several tens of stages)) may be used.
- Distance information 114 is obtained for each of all pixels constituting the endoscopic image 40. Note that distance information 114 may also be obtained for each block of the endoscopic image 40 that is larger than a pixel (for example, a pixel group made up of several to several hundred pixels).
- the measurement unit 82C acquires the distance information 114, for example, by deriving the distance information 114 using an AI method.
- a distance derivation model 94 is used to derive the distance information 114.
- the distance derivation model 94 is a machine that uses the second teacher data for the neural network.
- the second training data is optimized by learning.
- the second training data is a data set including multiple data (i.e., multiple frames of data) in which the second example data and the second answer data are associated with each other.
- the second example data is an image corresponding to the endoscopic image 40.
- the second correct answer data is correct answer data (i.e., annotation) for the second example data.
- an annotation that specifies the distance corresponding to each pixel appearing in the image used as the second example data is used as an example of the second correct answer data.
- the measurement unit 82C acquires the endoscopic image 40 from the camera 52, and inputs the acquired endoscopic image 40 to the distance derivation model 94.
- the distance derivation model 94 outputs distance information 114 in pixel units of the input endoscopic image 40. That is, in the measurement unit 82C, information indicating the distance from the position of the camera 52 (e.g., the position of an image sensor or objective lens mounted on the camera 52) to the intestinal wall 24 shown in the endoscopic image 40 is output from the distance derivation model 94 as distance information 114 in pixel units of the endoscopic image 40.
- the measurement unit 82C generates a distance image 116 based on the distance information 114 output from the distance derivation model 94.
- the distance image 116 is an image in which the distance information 114 is distributed in pixel units contained in the endoscopic image 40.
- the measurement unit 82C acquires the position identification information 98 from the determination unit 82B according to the priority order 104 determined by the determination unit 82B. That is, the measurement unit 82C acquires the position identification information 98 assigned to the segmentation images 44 in order from the highest priority order 104 to the lowest priority order 104. For example, in the example shown in FIG. 6, the three segmentation images 44 are assigned the priorities 104 of 1st to 3rd, so the measurement unit 82C acquires the position identification information 98 in sequence from the position identification information 98 assigned to the segmentation image 44 with the first priority order 104 to the position identification information 98 assigned to the segmentation image 44 with the third priority order 104.
- the measurement unit 82C acquires position identification information 98 from the multiple segmentation images 44 in order from high to low priority order 104, and by referring to the acquired position identification information 98, extracts distance information 114 from the distance image 116 that corresponds to a position identified from the position identification information 98.
- Examples of the distance information 114 extracted from the distance image 116 include distance information 114 that corresponds to a specific position (e.g., center of gravity) of the lesion 42, or a statistical value (e.g., median, average, or mode) of the distance information 114 for multiple pixels (e.g., all pixels) included in the lesion 42.
- the measurement unit 82C extracts a pixel count 118 from the endoscopic image 40.
- the pixel count 118 is the number of pixels on a line segment 120 that crosses an image area (i.e., an image area showing the lesion 42) at a position identified from the position identification information 98 among the entire image area of the endoscopic image 40 input to the distance derivation model 94.
- An example of the line segment 120 is the longest line segment parallel to the long side of a circumscribing rectangular frame 122 for the image area showing the lesion 42. Note that the line segment 120 is merely an example, and instead of the line segment 120, the longest line segment parallel to the short side of a circumscribing rectangular frame 122 for the image area showing the lesion 42 may be applied.
- the measurement unit 82C calculates the size 112 of the lesion 42 in real space based on the distance information 114 extracted from the distance image 116 and the number of pixels 118 extracted from the endoscopic image 40.
- the size 112 refers to, for example, the length of the lesion 42 in real space.
- the size 112 is calculated using an arithmetic expression 124.
- the measurement unit 82C inputs the distance information 114 extracted from the distance image 116 and the number of pixels 118 extracted from the endoscopic image 40 to the arithmetic expression 124.
- the arithmetic expression 124 is an arithmetic expression in which the distance information 114 and the number of pixels 118 are independent variables, and the size 112 is a dependent variable.
- the arithmetic expression 124 outputs the size 112 corresponding to the input distance information 114 and number of pixels 118.
- the size 112 of the lesion 42 corresponding to the segmentation image 44 assigned the first priority 104 is measured by the measurement unit 82C, but the sizes 112 of the lesions 42 corresponding to the segmentation images 44 assigned the second and third priorities 104 shown in FIG. 6 are also measured sequentially by the measurement unit 82C from the highest priority 104 to the lowest.
- the sizes 112 of multiple lesions 42 are measured sequentially according to the priority order 104
- the technology disclosed herein is not limited to this, and the sizes 112 of multiple lesions 42 may be measured in parallel.
- the length of the lesion 42 in real space is exemplified as size 112, but the technology of the present disclosure is not limited to this, and size 112 may be the surface area or volume of the lesion 42 in real space.
- an arithmetic formula 124 is used in which the number of pixels in the entire image area showing the lesion 42 and distance information 114 are independent variables, and the surface area or volume of the lesion 42 in real space is a dependent variable.
- the control unit 82D displays a map 102 in the second display area 38.
- the control unit 82D then displays a size 112 within the map 102 based on the priority order 104 assigned to the multiple segmentation images 44.
- the size 112 is displayed superimposed on the map 102. Note that the superimposed display is merely one example, and an embedded display may also be used.
- Multiple segmentation images 44 are displayed within the map 102, and the sizes 112 measured by the measurement unit 82C are displayed in order from highest to lowest priority 104 (first to third in the example shown in FIG. 8). That is, the sizes 112 displayed within the map 102 are switched according to the priority 104.
- the time interval at which the sizes 112 are switched i.e., the time during which the sizes 112 for each priority 104 are continuously displayed, may be a fixed time of several seconds to several tens of seconds, or may be a variable time that can be changed according to instructions given by the doctor 16 or the like via the reception device 64.
- the control unit 82D displays dimension lines 126 in the map 102 as information that enables identification of which of the multiple lesions 42 the size 112 displayed in the map 102 corresponds to.
- the dimension lines 126 are marks that enable identification of which part of the segmentation image 44 the size 112 corresponds to.
- the dimension lines 126 are created and displayed, for example, by the control unit 82D based on the position identification information 98 acquired from the recognition unit 82A.
- the dimension lines 126 may be created, for example, in a manner similar to the creation of the line segment 120 (i.e., in a manner similar to the use of the circumscribing rectangular frame 122).
- the dimension lines 126 are an example of "area identification information" related to the technology disclosed herein.
- FIG. 9 The flow of the medical support process shown in FIG. 9 is an example of a "medical support method" related to the technology of the present disclosure.
- step ST10 the recognition unit 82A determines whether or not one frame of images has been captured by the camera 52 inside the large intestine 22. If one frame of images has not been captured by the camera 52 inside the large intestine 22 in step ST10, the determination is negative and the determination of step ST10 is made again. If one frame of images has been captured by the camera 52 inside the large intestine 22 in step ST10, the determination is positive and the medical support process proceeds to step ST12.
- step ST12 the recognition unit 82A and the control unit 82D acquire one frame of the endoscopic image 40 obtained by imaging the large intestine 22 with the camera 52 (see FIG. 5). For ease of explanation, the following description will be given on the assumption that the endoscopic image 40 shows multiple lesions 42.
- step ST14 the medical support processing proceeds to step ST14.
- step ST14 the control unit 82D displays the endoscopic image 40 acquired in step ST12 in the first display area 36 (see Figures 1, 5, and 8). After the processing of step ST14 is executed, the medical support processing proceeds to step ST16.
- step ST16 the recognition unit 82A performs a recognition process 96 using the endoscopic image 40 acquired in step ST12 to recognize the positions and types of multiple lesions 42 in the endoscopic image 40, and acquires position identification information 98 and type information 100 (see FIG. 5).
- step ST18 the medical support process proceeds to step ST18.
- step ST18 the determination unit 82B determines priorities 104 for the multiple lesions 42 shown in the endoscopic image 40 acquired in step ST12 based on the position identification information 98 and type information 100 acquired by the recognition unit 82A in step ST16 (see FIG. 6). After the processing of step ST18 is executed, the medical support processing proceeds to step ST20.
- step ST20 the measurement unit 82C measures the size 112 of the multiple lesions 42 shown in the endoscopic image 40 acquired in step ST12 (see FIG. 7). After the processing of step ST20 is executed, the medical support processing proceeds to step ST22.
- step ST22 the control unit 82D displays the multiple sizes 112 of the multiple lesions 42 measured by the measurement unit 82C in step ST20 in the second display area 38 based on the priority order 104 determined in step ST18 (see FIG. 8). After the processing of step ST22 is executed, the medical support processing proceeds to step ST24.
- step ST24 the control unit 82D determines whether or not a condition for terminating the medical support process has been satisfied.
- a condition for terminating the medical support process is a condition in which an instruction to terminate the medical support process has been given to the endoscope system 10 (for example, a condition in which an instruction to terminate the medical support process has been accepted by the acceptance device 64).
- step ST24 If the conditions for terminating the medical support process are not met in step ST24, the determination is negative and the medical support process proceeds to step ST10. If the conditions for terminating the medical support process are met in step ST24, the determination is positive and the medical support process ends.
- the recognition unit 82A recognizes the positions of the multiple lesions 42 in the endoscopic image 40 based on the endoscopic image 40 in which the multiple lesions 42 are shown.
- the determination unit 82B determines the priority order 104 of the multiple lesions 42 based on the positions of the multiple lesions 42 in the endoscopic image 40.
- the measurement unit 82C measures the sizes 112 of the multiple lesions 42.
- the control unit 82D displays the sizes 112 on the screen 35 based on the priority order 104. In this embodiment, as an example, the priority order 104 becomes higher the closer the position of the lesion 42 is to the center of the endoscopic image 40.
- the size 112 of each lesion 42 is displayed on the screen 35 in order of priority 104. Therefore, among the multiple lesions 42 shown in the endoscopic image 40, the doctor 16 can grasp the size 112 of the lesions 42 in order, starting from the size 112 of the lesion 42 that is expected to be of great interest to the doctor 16 to the size 112 of the lesion 42 that is expected to be of little interest to the doctor 16.
- the size 112 is displayed on the screen 35. Therefore, when multiple lesions 42 are shown in the endoscopic image 40, the doctor 16 can visually recognize the size 112 of the lesion 42 that is expected to be of great interest to the doctor 16.
- an endoscopic image 40 is displayed in a first display area 36 in the screen 35.
- a map 102 is displayed in a second display area 38 in the screen 35, and dimension lines 126 are displayed in the map 102 as information that can identify the lesion 42 that corresponds to the size 112 displayed in the second display area 38. Therefore, the doctor 16 can visually recognize through the map 102 which of the multiple lesions 42 shown in the endoscopic image 40 the size 112 displayed on the screen 35 corresponds to.
- the sizes 112 displayed on the screen 35 are switched according to the priority order 104. Therefore, when multiple lesions 42 are shown in the endoscopic image 40, the doctor 16 can visually recognize the sizes 112 of the lesions 42 in sequence, from the size 112 of the lesion 42 that is expected to be of great interest to the doctor 16 to the size 112 of the lesion 42 that is expected to be of little interest to the doctor 16.
- the recognition unit 82A recognizes the positions and types of the multiple lesions 42 in the endoscope image 40 based on the endoscope image 40 in which the multiple lesions 42 are captured.
- the determination unit 82B determines the priority order 104 of the multiple lesions 42 based on the positions and types of the multiple lesions 42 in the endoscope image 40.
- the control unit 82D then displays the size 112 on the screen 35 based on the priority order 104.
- the priority order 104 is higher the closer the position of the lesion 42 is to the center of the endoscope image 40, and the higher the severity of the type of lesion 42 is.
- the doctor 16 can be made to understand the size 112 of the type of lesion 42 that is of high interest to the doctor 16 and the size 112 of the type of lesion 42 that is of low interest to the doctor 16.
- the measurement unit 82C measures the sizes 112 of multiple lesions 42 according to the priority order 104. Therefore, of the multiple lesions 42 shown in the endoscopic image 40, the sizes 112 of the lesions 42 that are of greatest interest to the doctor 16 can be measured with priority. As a result, this can contribute to quickly presenting to the doctor 16 the sizes 112 of the lesions 42 that are of greatest interest to the doctor 16.
- the position weight 106 is larger the closer to the center of the endoscopic image 40, but the technology of the present disclosure is not limited to this.
- the position weight 106 may be larger the closer to a specified position in the endoscopic image 40 (e.g., an area specified by the doctor 16 as an area to be watched by the doctor 16).
- the position weight 106 may be smaller the closer to a specified position in the endoscopic image 40 (e.g., an area defined as an area in the endoscopic image 40 where the optical effects (e.g., distortion) of the lens of the camera 52 affect (e.g., the edge of the endoscopic image 40)).
- the specified position in the endoscopic image 40 may be a fixed position that is determined in advance in accordance with various conditions, or may be a position that is changed in accordance with various conditions and/or given instructions.
- the display of the sizes 112 of the multiple lesions 42 on the screen 35 may be performed each time an instruction 128 is given to the endoscope 12.
- An example of the instruction 128 is an instruction given by the doctor 16.
- the instruction 128 is received by the reception device 64, and the control unit 82D switches the display of the sizes 112 of the multiple lesions 42 in order of priority 104 each time the instruction 128 is received by the reception device 64.
- the priority order 104 is determined based on the position and type of the lesion 42, but the technology of the present disclosure is not limited to this.
- the priority order 104 may be determined based on the position of the lesion 42 without taking into account the type of the lesion 42.
- the priority order 104 may be determined based on information other than the position identification information 98 and the type information 100.
- the determination unit 82B determines the priority order 104 based on the position identification information 98 and the confidence level 130.
- the confidence level 130 is an index indicating the likelihood of the position and type of each of the multiple lesions 42, and is used to recognize the position and type of the lesion 42 by the recognition model 92.
- the confidence level 130 is obtained from the recognition model 92 for each of the multiple lesions 42 when the position and type of the multiple lesions 42 are recognized by the recognition process 96 (see FIG. 5).
- an index indicating the likelihood of the position and type of each of the multiple lesions 42 is exemplified as the confidence level 130, but the technology disclosed herein is valid as long as the confidence level 130 is an index indicating the likelihood of the position of each of the multiple lesions 42.
- the determination unit 82B derives the confidence weight 132 based on the confidence 130.
- the confidence weight 132 is a value determined within the range of "0 ⁇ z ⁇ 0.5".
- a first example of a means for deriving the confidence weight 132 from the confidence 130 is a means using an arithmetic expression in which the confidence 130 is a dependent variable and the confidence weight 132 is an independent variable.
- a second example of a means for deriving the confidence weight 132 from the confidence 130 is a means using a table in which the confidence 130 is an input and the confidence weight 132 is an output.
- the determination unit 82B calculates the total weight 134 based on the position weight 106 and the confidence weight 132 in a manner similar to that used to calculate the total weight 110 in the above embodiment.
- the determination unit 82B determines the priority order 104 based on the total weight 134 in a manner similar to that used in the above embodiment, and assigns the determined priority order 104 to multiple lesions 42.
- the confidence 130 influences the determination of the priority order 104, and therefore the priority order 104 can be determined with high accuracy.
- confidence weights 132 are shown, but as an example, as shown in FIG. 12, depth weights 136 may be applied instead of confidence weights 132.
- the determination unit 82B determines the priority order 104 based on the position identification information 98 and the depth weight 136.
- the depth weight 136 is a numerical value determined according to the depth from the observation position in the depth direction (hereinafter, simply referred to as "depth").
- depth the depth weight 136 is derived based on the distance information 114 extracted from the distance image 116 (see FIG. 7).
- the depth weight 136 may be the distance indicated by the distance information 114 extracted from the distance image 116 itself, or may be a numerical value obtained by dividing the distance indicated by the distance information 114 extracted from the distance image 116 into several stages to several hundred stages. The smaller the depth, the larger the depth weight 136. Note that, without being limited to this, the greater the depth, the greater the depth weight 136 may be. Whether the depth weight 136 is greater the smaller the depth or the greater the depth may be determined by instructions given by the doctor 16 via the reception device 64.
- the determination unit 82B calculates the total weight 138 based on the position weight 106 and the depth weight 136 in a manner similar to that used to calculate the total weight 110 in the above embodiment.
- the determination unit 82B determines the priority order 104 based on the total weight 138 in a manner similar to that used in the above embodiment, and assigns the determined priority order 104 to the multiple lesions 42.
- the doctor 16 can be made to grasp the size 112 of the lesion 42 in which the doctor 16 is most interested by giving priority.
- the dimension lines 126 are displayed in correspondence with the segmentation image 44 as information capable of identifying the lesion 42 corresponding to the size 112 displayed in the map 102, but the technology of the present disclosure is not limited to this.
- a circumscribing rectangular frame 140 for the segmentation image 44 capable of identifying the position in the endoscopic image 40 of the lesion 42 corresponding to the size 112 displayed in the map 102 may be displayed in the map 102.
- the dimension lines 126 may be displayed in the map 102 together with the circumscribing rectangular frame 140.
- the circumscribing rectangular frame 140 may be a bounding box.
- the circumscribing rectangular frame 140 is an example of "area identification information" related to the technology of the present disclosure.
- the sizes 112 are displayed in the map 102 in order of the priority order 104, but this is merely an example.
- the sizes 112 may be displayed outside the map 102 (i.e., outside the second display area 38).
- the sizes 112 are displayed in a pop-up manner from inside the map 102 to outside the map 102.
- a speech bubble is generated from each of the multiple segmentation images 44, and each speech bubble contains text information 142 that can identify the size 112 and the priority order 104. Therefore, the doctor 16 can simultaneously view the size 112 and priority order 104 of each of the multiple lesions 42 on the screen 35.
- the text information 142 is displayed, but this is merely an example, and the doctor 16 may visually recognize the priority order 104 (for example, an image or a symbol).
- a form in which the size 112 and text information 142 are displayed in a pop-up manner from each of the multiple segmentation images 44 is given, but this is merely one example.
- the size 112 and text information 142 may be displayed in a pop-up manner from each of the multiple lesions 42 shown in the endoscopic image 40.
- the size 112 and text information 142 are displayed at a display size according to the priority 104.
- the higher the priority 104 the larger the display size at which the size 112 and text information 142 are displayed.
- the size 112 and text information 142 may be displayed in a display mode that makes them more noticeable the higher the priority 104.
- the doctor 16 can visually distinguish between the sizes 112 of lesions 42 that are expected to be of great interest to the doctor 16 and the sizes 112 of lesions 42 that are expected to be of little interest to the doctor 16.
- a pop-up display using a speech bubble is illustrated, but this is merely one example, and it is sufficient that the size 112 is displayed on the screen 35 in a display manner that allows identification of which lesion 42 the size 112 refers to (for example, a display manner in which the segmentation image 44 in the map 102 or the lesion 42 in the endoscopic image 40 is connected to the size 112 by a line). Similarly, it is sufficient that the size 112 is displayed on the screen 35 in a display manner that allows identification of which lesion 42 the text information 142 relates to.
- the size 112 of each of the multiple lesions 42 is displayed within the map 102, but the technology disclosed herein is not limited to this.
- the size 112 may be displayed within the endoscopic image 40. This allows the doctor 16 to visually recognize the size 112 of each of the multiple lesions 42 along with the endoscopic image 40.
- the size 112 may be displayed in an alpha blended manner.
- the size 112 may also be displayed in a manner that allows the priority 104 to be identified (e.g., font size, font color, and/or transparency, etc.).
- a circumscribing rectangular frame 144 for the lesion 42 corresponding to the size 112 displayed in the endoscopic image 40 may be displayed in the endoscopic image 40.
- the circumscribing rectangular frame 144 may be a bounding box.
- the display of the circumscribing rectangular frame 144 is switched each time the display of the size 112 is switched according to the priority order 104 so that it is possible to identify which lesion 42 the size 112 displayed in the endoscopic image 40 corresponds to.
- the circumscribing rectangular frame 144 is an example of "area identification information" related to the technology of the present disclosure.
- the doctor 16 can visually easily recognize which of the multiple lesions 42 appearing in the endoscopic image 40 the size 112 displayed within the endoscopic image 40 corresponds to.
- the display of the size 112 and the circumscribing rectangular frame 144 in the endoscopic image 40 are switched according to the priority order 104, but the sizes 112 of multiple lesions 42 may be displayed together in the endoscopic image 40.
- the display aspects such as the line type, color, and/or brightness of the circumscribing rectangular frame 144 may be changed according to the priority order 104.
- the size 112 is displayed on the screen 35, but this is merely one example, and the size 112 may be displayed on the screen 35 and/or at least one screen other than the screen 35.
- information that can identify the priority order 104 may be displayed on the screen 35 and/or at least one screen other than the screen 35, and information that can identify the lesion 42 that corresponds to the displayed size 112 (e.g., dimension lines and/or a circumscribing rectangular frame, etc.) may be displayed.
- the priority order 104 is determined based on two pieces of information, the position identification information 98 and information other than the position identification information 98.
- the priority order 104 may be determined based on three or more pieces of information including the position identification information 98 (e.g., three or more pieces of information selected from the position identification information 98, the type information 100, the confidence level 130, and the depth).
- the priority 104 may also be determined based on one or more pieces of information other than the location information 98 (e.g., one or more pieces of type information 100, confidence level 130, and depth).
- the size 112 is measured on a frame-by-frame basis, but this is merely one example, and statistical values (e.g., average, median, or mode, etc.) of the size 112 measured for multiple frames of endoscopic images 40 in a time series may be displayed in a display manner similar to that of the above embodiment.
- statistical values e.g., average, median, or mode, etc.
- the size 112 may be measured, and the measured size 112 itself, or a statistical value of the size 112 measured for multiple frames of endoscopic images 40 in a time series, may be displayed on the screen 35.
- the position of the lesion 42 was recognized for each endoscopic image 40 using an AI segmentation method, but the technology of the present disclosure is not limited to this.
- the position of the lesion 42 may be recognized for each endoscopic image 40 using an AI bounding box method.
- the amount of change in the bounding box is calculated by the processor 82, and a determination is made as to whether or not to measure the size 112 of the lesion 42 based on the amount of change in the bounding box in a manner similar to that of the above embodiment.
- the amount of change in the bounding box means the amount of change in the position of the lesion 42.
- the amount of change in the position of the lesion 42 may be the amount of change in the position of the lesion 42 between adjacent endoscopic images 40 in a time series, or may be the amount of change in the position of the lesion 42 between three or more frames of endoscopic images 40 in a time series (for example, a statistical value such as the average, median, mode, or maximum amount of change between three or more frames of endoscopic images 40 in a time series). It may also be the amount of change in the position of the lesion 42 between multiple frames in a time series with an interval of one or more frames between them.
- an AI-based object recognition process is exemplified as the recognition process 96, but the technology disclosed herein is not limited to this, and the lesion 42 shown in the endoscopic image 40 may be recognized by the recognition unit 82A by executing a non-AI-based object recognition process (e.g., template matching, etc.).
- a non-AI-based object recognition process e.g., template matching, etc.
- the display device 14 is exemplified as an output destination of the size 112, but the technology disclosed herein is not limited to this, and the output destination of the size 112 may be a device other than the display device 14. As an example, as shown in FIG. 17, the output destination of the size 112 may be an audio playback device 146, a printer 148, and/or an electronic medical record management device 150, etc.
- the size 112 may be output as audio by an audio playback device 146.
- the size 112 may also be printed as text on a medium (e.g., paper) by a printer 148.
- the size 112 may also be stored in an electronic medical record 152 managed by an electronic medical record management device 150.
- the arithmetic formula 124 was used to calculate the size 112
- the technology disclosed herein is not limited to this, and the size 112 may be measured by performing AI processing on the endoscopic image 40.
- a trained model may be used that outputs the size 112 of the lesion 42 when an endoscopic image 40 including a lesion 42 is input.
- deep learning may be performed on a neural network using teacher data that has annotations indicating the size of the lesion as correct answer data for the lesions shown in the images used as example data.
- deriving distance information 114 using distance derivation model 94 has been described, but the technology of the present disclosure is not limited to this.
- other methods of deriving distance information 114 using an AI method include a method that combines segmentation and depth estimation (for example, regression learning that provides distance information 114 for the entire image (for example, all pixels that make up the image), or unsupervised learning that learns the distance for the entire image in an unsupervised manner).
- a distance measuring sensor may be provided at the tip 50 (see FIG. 2) so that the distance from the camera 52 to the intestinal wall 24 is measured by the distance measuring sensor.
- an endoscopic image 40 is exemplified, but the technology of the present disclosure is not limited to this, and the technology of the present disclosure can also be applied to medical images other than endoscopic images 40 (for example, images obtained by a modality other than the endoscope 12, such as radiological images or ultrasound images).
- position identification information can be extracted from all the distance information 114 output from the distance derivation model 94 without generating the distance image 116.
- the distance information 114 corresponding to the position identified from the information 98 is extracted, and the extracted distance information 114 is input to the calculation formula 124.
- the medical support program 90 may be stored in a portable, computer-readable, non-transitory storage medium such as an SSD or USB memory.
- the medical support program 90 stored in the non-transitory storage medium is installed in the computer 78 of the endoscope 12.
- the processor 82 executes the medical support process in accordance with the medical support program 90.
- the medical support program 90 may also be stored in a storage device such as another computer or server connected to the endoscope 12 via a network, and the medical support program 90 may be downloaded and installed in the computer 78 in response to a request from the endoscope 12.
- processors listed below can be used as hardware resources for executing medical support processing.
- An example of a processor is a CPU, which is a general-purpose processor that functions as a hardware resource for executing medical support processing by executing software, i.e., a program.
- Another example of a processor is a dedicated electrical circuit, which is a processor with a circuit configuration designed specifically for executing specific processing, such as an FPGA, PLD, or ASIC. All of these processors have built-in or connected memory, and all of these processors execute medical support processing by using the memory.
- the hardware resource that executes the medical support processing may be composed of one of these various processors, or may be composed of a combination of two or more processors of the same or different types (for example, a combination of multiple FPGAs, or a combination of a CPU and an FPGA). Also, the hardware resource that executes the medical support processing may be a single processor.
- a configuration using a single processor first, there is a configuration in which one processor is configured using a combination of one or more CPUs and software, and this processor functions as a hardware resource that executes medical support processing. Secondly, there is a configuration in which a processor is used that realizes the functions of the entire system, including multiple hardware resources that execute medical support processing, on a single IC chip, as typified by SoCs. In this way, medical support processing is realized using one or more of the various processors listed above as hardware resources.
- the hardware structure of these various processors can be an electric circuit that combines circuit elements such as semiconductor elements.
- the above medical support processing is merely an example. Therefore, unnecessary
- a and/or B is synonymous with “at least one of A and B.”
- a and/or B means that it may be just A, or just B, or a combination of A and B.
- the same concept as “A and/or B” is also applied when three or more things are expressed by linking them with “and/or.”
- a processor is provided.
- the processor is Recognizing positions of the plurality of observation target regions in a medical image based on the medical image showing the plurality of observation target regions; determining a priority order for the plurality of observation target regions based on the positions; A medical support device that measures sizes of the plurality of observation target regions according to the priority order.
- Appendix 2 A medical support device according to claim 1; and a module that is inserted into a body including the observation target area and captures the observation target area to obtain the medical image.
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Abstract
Description
プロセッサを備え、
上記プロセッサは、
複数の観察対象領域が写っている医用画像に基づいて上記医用画像内での上記複数の観察対象領域の位置を認識し、
上記複数の観察対象領域の優先順位を上記位置に基づいて決定し、
上記優先順位に従って上記複数の観察対象領域のサイズを測定する
医療支援装置。
付記1に記載の医療支援装置と、
上記観察対象領域を含む体内に挿入されて上記観察対象領域を撮像することにより上記医用画像を取得するモジュールと、を備える
内視鏡。
複数の観察対象領域が写っている医用画像に基づいて上記医用画像内での上記複数の観察対象領域の位置を認識すること、
上記複数の観察対象領域の優先順位を上記位置に基づいて決定すること、及び、
上記優先順位に従って上記複数の観察対象領域のサイズを測定することを含む
医療支援方法。
複数の観察対象領域が写っている医用画像に基づいて上記医用画像内での上記複数の観察対象領域の位置を認識すること、
上記複数の観察対象領域の優先順位を上記位置に基づいて決定すること、及び、
上記優先順位に従って上記複数の観察対象領域のサイズを測定することを含む医療支援処理をコンピュータに実行させるためのプログラム。
Claims (20)
- プロセッサを備え、
前記プロセッサは、
複数の観察対象領域が写っている医用画像に基づいて前記医用画像内での前記複数の観察対象領域の位置を認識し、
前記複数の観察対象領域の優先順位を前記位置に基づいて決定し、
前記複数の観察対象領域のサイズを測定し、
前記優先順位に基づいて前記サイズを出力する
医療支援装置。 - 前記プロセッサは、前記観察対象領域毎の前記サイズを前記優先順位通りに順次に出力する
請求項1に記載の医療支援装置。 - 前記観察対象領域毎の前記サイズの出力は、指示が与えられる毎に行われる
請求項2に記載の医療支援装置。 - 前記サイズの出力は、前記サイズが画面に表示されることによって実現される
請求項1に記載の医療支援装置。 - 前記画面には、前記サイズが前記優先順位に応じた表示態様で表示される
請求項4に記載の医療支援装置。 - 前記画面には、前記医用画像が表示され、
前記サイズは、前記医用画像内に表示される
請求項4に記載の医療支援装置。 - 前記画面には、前記医用画像が表示され、かつ、出力された前記サイズに対応する前記観察対象領域を特定可能な領域特定情報が前記医用画像内に表示される
請求項4に記載の医療支援装置。 - 前記画面は、第1表示領域と第2表示領域とを含み、
前記第1表示領域には、前記医用画像が表示され、
前記第2表示領域には、前記観察対象領域毎の前記位置の分布を示すマップが表示され、かつ、出力された前記サイズに対応する前記観察対象領域を特定可能な領域特定情報が前記マップ内に表示される
請求項4に記載の医療支援装置。 - 前記画面に表示される前記サイズは、前記優先順位に従って切り替えられる
請求項4に記載の医療支援装置。 - 前記画面に表示される前記サイズは、指示が与えられる毎に切り替えられる
請求項9に記載の医療支援装置。 - 前記位置は、AIを用いた方式で認識され、
前記優先順位は、前記AIから得られる確信度に基づいて決定される
請求項1に記載の医療支援装置。 - 前記優先順位は、前記位置が前記医用画像の中心に近いほど高い
請求項1に記載の医療支援装置。 - 前記プロセッサは、前記複数の観察対象領域の深度を取得し、
前記優先順位は、前記位置と前記深度とに基づいて決定される
請求項1に記載の医療支援装置。 - 前記プロセッサは、前記医用画像に基づいて前記観察対象領域の種類を認識し、
前記優先順位は、前記位置と前記種類とに基づいて決定される
請求項1に記載の医療支援装置。 - 前記プロセッサは、前記優先順位に従って前記サイズを測定する
請求項1に記載の医療支援装置。 - 前記医用画像は、内視鏡によって撮像されることによって得られた内視鏡画像である
請求項1に記載の医療支援装置。 - 前記観察対象領域は、病変である
請求項1に記載の医療支援装置。 - 請求項1から請求項17の何れか一項に記載の医療支援装置と、
前記観察対象領域を含む体内に挿入されて前記観察対象領域を撮像することにより前記医用画像を取得するモジュールと、を備える
内視鏡。 - 複数の観察対象領域が写っている医用画像に基づいて前記医用画像内での前記複数の観察対象領域の位置を認識すること、
前記複数の観察対象領域の優先順位を前記位置に基づいて決定すること、
前記複数の観察対象領域のサイズを測定すること、及び、
前記優先順位に基づいて前記サイズを出力することを含む
医療支援方法。 - 複数の観察対象領域が写っている医用画像に基づいて前記医用画像内での前記複数の観察対象領域の位置を認識すること、
前記複数の観察対象領域の優先順位を前記位置に基づいて決定すること、
前記複数の観察対象領域のサイズを測定すること、及び、
前記優先順位に基づいて前記サイズを出力することを含む医療支援処理をコンピュータに実行させるためのプログラム。
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2011120747A (ja) * | 2009-12-11 | 2011-06-23 | Fujifilm Corp | 画像表示装置および方法並びにプログラム |
| WO2016080331A1 (ja) * | 2014-11-17 | 2016-05-26 | オリンパス株式会社 | 医療装置 |
| WO2020054541A1 (ja) * | 2018-09-11 | 2020-03-19 | 富士フイルム株式会社 | 医療画像処理装置、医療画像処理方法及びプログラム、内視鏡システム |
| WO2022224859A1 (ja) * | 2021-04-23 | 2022-10-27 | 富士フイルム株式会社 | 内視鏡システム及びその作動方法 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011120747A (ja) * | 2009-12-11 | 2011-06-23 | Fujifilm Corp | 画像表示装置および方法並びにプログラム |
| WO2016080331A1 (ja) * | 2014-11-17 | 2016-05-26 | オリンパス株式会社 | 医療装置 |
| WO2020054541A1 (ja) * | 2018-09-11 | 2020-03-19 | 富士フイルム株式会社 | 医療画像処理装置、医療画像処理方法及びプログラム、内視鏡システム |
| WO2022224859A1 (ja) * | 2021-04-23 | 2022-10-27 | 富士フイルム株式会社 | 内視鏡システム及びその作動方法 |
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