JP2009226110A - Radiographic image photographing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radiographic image photographing system can rapidly confirm whether a photographing mistake occurs in photographed radiographic image data referring to transmitted reduced image data, in the radiographic image photographing system using a portable radiographic image detecting device which performs wireless communication. <P>SOLUTION: The radiographic image photographing system includes the radiographic image detecting device 6 for making a reduced image generating part 62 generate the reduced image data which are obtained by reducing image size of the radiographic image data, on the basis of information of a display form transmitted from a console 7, and for making a wireless communication part 69 transmit the generated reduced image data to the console 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a radiographic imaging system, and more particularly, to a radiographic imaging system using a portable radiographic image detection apparatus that performs wireless communication.

  In the field of medical diagnosis, a reading device that reads radiation image data by scanning a phosphor plate built in a CR cassette with excitation light, and a control device (console for acquiring radiation image data read by the reading device) ) And a CR (Computed Radiography) system have been put into practical use (see Patent Document 1).

  Further, in place of the above-described CR cassette, radiation detector elements that are two-dimensionally arranged on a substrate are built in, and radiation signals that can output an electrical signal corresponding to the radiation dose applied to the radiation detector elements can be output. An FPD (Flat Panel Detector) device as an image detection device has been proposed. If this FPD is used, radiation image data can be obtained directly without irradiating excitation light and reading radiation image data, so the system itself can be made smaller than when using a CR cassette. In addition, the photographing work is also smooth.

  Due to these merits, there is a desire to replace an existing CR system constructed with a CR cassette with an FPD. In particular, improvement in semiconductor technology enables reduction in size and weight, and replacement is possible by using a portable FPD having a wireless communication unit of the same size as a CR cassette.

  In the case of replacement, the radiation irradiation unit that irradiates the radiation used in the CR system, and the equipment such as the imaging table on which the patient is thin and attaches the CR cassette can be used as they are, so that the introduction cost can be reduced. is there.

  Although the FPD is installed in the radiation imaging room, a cassette type FPD that enables portable and wireless communication is disclosed in order to enable imaging of a wide range of parts more quickly (Patent Document 2). reference).

Moreover, it is preferable to confirm whether the radiographic image data that has been taken has been taken normally. In a cassette type FPD that enables portable wireless communication, when radiographic image data is transmitted by wireless communication, it takes a long time to transfer due to transfer speed limitations, so imaging and transfer are continuously performed in a short time. It is difficult to do. Therefore, the reduced image is first transferred, and it is confirmed by the reduced image displayed on the operator interface 32 whether there is an obvious imaging error, and the captured radiation image data (all images) is stored in the built-in memory. An X-ray imaging apparatus is disclosed (see Patent Document 3, especially paragraph 0084).
JP 2002-158820 A Japanese Patent Laid-Open No. 2002-248095 JP 2002-191586 A

  There are various display formats for captured images, and the optimal image size of the reduced image data differs depending on the format. When reduced image data larger than the optimal image size is transferred, the amount of image data increases and not only the transfer time is required, but also a part of the image is lost and displayed, and re-shooting is necessary. May not be able to be judged correctly, and the original purpose cannot be achieved. On the other hand, if the reduced image data smaller than the optimum image size is transferred, it may be insufficient to determine whether or not there has been a shooting mistake. Therefore, it is necessary to wait for the radiographic image data (all images) to be transferred, and early diagnosis becomes difficult.

  In such a case, the original purpose of transferring in a short time cannot be achieved. On the other hand, if the reduced image data smaller than the optimum image size is transferred, it may be insufficient to determine whether or not there has been a shooting mistake. This waits for the transfer of the radiation image data (all images).

  In view of the above problems, the present invention is directed to radiographic image data obtained by referring to the reduced image data transmitted by the photographer in a radiographic imaging system using a portable radiographic image detection device that performs wireless communication. It is an object of the present invention to provide a radiographic image capturing system capable of quickly and correctly confirming whether or not there has been an imaging mistake.

1. An imaging unit that generates radiation image data based on radiation that has passed through a subject, a storage unit that stores a plurality of generated radiation image data, and a reduction that generates reduced image data from the radiation image data stored in the storage unit A radiological image detection apparatus comprising: an image generation unit;
A console including a display unit that displays reduced image data received from the radiological image detection device based on the set display formation;
Wireless communication means for enabling wireless communication between the radiological image detection apparatus and the console;
A radiographic imaging system comprising:
The console transmits information on the set display format to the radiation image detection device,
The radiological image detection apparatus causes the reduced image generation unit to generate reduced image data from the radiation image data based on the received display format information, and transmits the generated reduced image data to the console by the wireless communication unit. A radiographic imaging system characterized in that

  2. The reduced image generation unit makes the reduction rate variable when generating reduced image data from radiation image data based on the number of reduced image data to be transmitted to the console and information on the display format. The radiographic imaging system described in 1.

3. A plurality of imaging regions each having at least one radiation irradiation device disposed;
An imaging unit that performs imaging based on radiation irradiated from the radiation irradiation apparatus and transmitted through the subject to acquire radiation image data, a storage unit that can store a plurality of radiation image data captured by the imaging unit, and A radiological image detection apparatus comprising: a reduced image generation unit that generates reduced image data in which an image size of the radiographic image data stored in the storage unit is reduced; and an RFID tag;
A console associated with any of the imaging regions and provided with a console ID, and displaying a reduced image data received from the radiation image detection device based on a set display formation; Multiple consoles with
An RFID tag reader that detects the entry of the radiation image detection device into the imaging region by reading information of the RFID tag;
Wireless communication means for enabling wireless communication between the radiological image detection apparatus and the console;
A radiographic imaging system comprising:
When the RFID tag reader detects the entry of the radiological image detection apparatus into the imaging area, the console associated with the imaging area displays the assigned console ID and the set display format information. Transmitted to the radiation image detection device,
When the transmission trigger is input, the radiological image detection device causes the reduced image generation unit to generate reduced image data from the radiation image data based on the information of the display format received last, and the generated reduced image A radiographic imaging system, wherein data is transmitted to the console to which the console ID last received by the wireless communication means is assigned.

  4). The reduced image generation unit makes the reduction ratio variable when generating reduced image data from radiation image data based on the number of reduced image data to be transmitted to the console and information on the display format. The radiographic imaging system described in 1.

5. The console has a confirmation input unit for confirming that radiographic image data photographed by referring to the reduced image data displayed on the display unit by the photographer has been successfully photographed,
3 or 4, wherein the console causes the radiological image detection apparatus to transmit radiographic image data corresponding to the reduced image data displayed on the display unit based on an input of the confirmation input unit. The radiographic imaging system described.

6). Having a connection section that enables wired communication between the radiological image detection apparatus and the console by loading the radiographic image detection apparatus;
6. The radiographic image capturing system according to 5, wherein the radiographic image data is transmitted to the console of the radiographic image detection apparatus by wired communication through the connection unit.

7). The console sets image processing conditions based on the reduced image data,
7. The processing image data is generated by applying the set image processing conditions to radiation image data corresponding to the reduced image data, and the generated processing image data is transmitted to an external device. Radiation imaging system.

  According to the present invention, in a radiographic image capturing system using a portable radiographic image detection device that performs wireless communication, an imaging error is performed on captured radiographic image data by referring to the reduced image data transmitted by the photographer. Therefore, it is possible to provide a radiographic image capturing system capable of quickly and correctly confirming whether or not there has been.

  Although the present invention will be described based on an embodiment, the present invention is not limited to the embodiment.

  FIG. 1 is a diagram showing a schematic configuration of a radiographic image capturing system 1 in the present embodiment.

  As shown in FIG. 1, the radiographic imaging system 1 includes an imaging operation device 4 that performs operations related to radiographic imaging, an access point 5 that performs wireless communication, for example, via a wireless LAN (Local Area Network), and a radiographic image detection device. 6 is connected to a console 7 for performing image processing on the radiation image data generated by 6 through a network N.

  The radiographic imaging system 1 is connected to a management server 2 that manages information related to radiography as an external device. Although not shown here, the radiographic imaging system 1 includes a HIS (Hospital Information System) that centrally manages patient diagnosis information and accounting information, and an RIS (Radiology Information System) that manages radiological information and a network N. Connected through. The network N may be a communication line dedicated to the system, but is preferably an existing line such as Ethernet (registered trademark) because the degree of freedom of the system configuration is low.

[Shooting area, tag reader 8]
Reference numerals 100a and 100b denote photographing rooms. The imaging room 100a and the imaging room 100b have the same configuration. Hereinafter, these will be collectively referred to as the imaging room 100. The imaging room 100 includes a radiation irradiation device 3, an imaging operation device 4, an access point 5 for performing wireless communication, and a router 9 connected to the access point. Further, at least one radiation irradiation device 3 is arranged inside each imaging room 100. In addition, each photographing room 100 constitutes an independent “photographing area”. In addition, a front chamber 10 is provided on the entrance / exit side of the photographing room 100, and the photographing operation device 4, the router 9, and the RFID tag reader 8 (hereinafter simply referred to as a tag reader) are arranged in the front chamber 10, The wall surface of the front chamber 10 is shielded with lead or the like, and protects the photographer and the like from radiation from the radiation irradiation device 3.

  The tag reader 8 detects the RFID tag 68 built in the radiation image detection device 6. The tag reader 8 is connected to the photographing operation device 4 via a cable. The tag reader 8 can detect the entry of the radiological image detection apparatus into each imaging room 100.

  The console 7a is associated with a photographing room 100a as a photographing region, and the console 7b is associated with a photographing room 100b as a photographing region. Hereinafter, the respective consoles are also collectively referred to as a console 7. Each photographing room 100 is provided with an access point 5, and in each photographing room 100, communication is performed with each console 7 from each access point 5 via the network N.

  The radiation irradiation device 3 is configured to irradiate a patient 12 as a subject lying on the supine imaging stand 11, and a radiation image detection device 6 is mounted below the supine imaging stand 11. A detection device mounting port 11a is provided. The radiation irradiating device 3 is controlled by the imaging operation device 4 to irradiate radiation under predetermined imaging conditions. The synchronization of the imaging timing between the radiation irradiation device 3 and the radiation image detection device 6 attached to the detection device attachment port 11a may be performed by wireless communication via the access point 5 between them.

  The access point 5 has a function of relaying these communications when the radiographic image detection device 6 and the console 7 communicate wirelessly within a predetermined area of the imaging room provided with the radiation irradiation device 3. Note that an example in which wireless communication is performed by a wireless LAN (for example, a communication method compliant with IEEE802.11a / b / n) will be described. However, the present invention is not limited to this. In addition to using radio waves (spatial waves), infrared or visible Wireless communication may be performed by optical wireless communication (for example, IrDA) using light beams or the like (laser or the like), acoustic communication using sound waves or ultrasonic waves.

[Management Server 2]
The management server 2 is configured by a computer, and stores a control unit that controls each unit constituting the management server 2, an input operation unit (not shown) for inputting various information and user information, and instructions, and various types of information. A storage device 21 and the like are provided. The storage device 21 stores imaging order information such as patient information and imaging information for performing radiography. The imaging order information is input from the console 7 or a reception terminal in a hospital (not shown).

[Console 7]
FIG. 2 is a block diagram showing a main configuration of the console 7. As shown in FIG. 2, the console 7 includes a control unit 74, a RAM (Random Access Memory) 75, a ROM (Read Only Memory) 76, a display unit 77, an input operation unit 78, a communication unit 79, a storage unit 70, and the like. Each part is connected by a bus 71. In the present embodiment, as described above, a plurality of consoles 7a, 7b, 7c are connected to the network N, and each console 7a, 7b, 7c is assigned a unique console ID as identification information for identification. Has been.

  The display unit 77 includes, for example, a CRT (Cathode Ray Tube), an LCD (Liquid Crystal Display), and the like, and according to instructions of a display signal sent from the control unit 74, the patient list, various messages and images, Various screens are displayed.

  In addition, the display unit 77 includes patient information input from the input operation unit 78, imaging order information created based on imaging conditions such as an imaging region, radiation image data transmitted from the radiation image detection device 6, and the like. Based on the set display format, reduced image data described later is displayed. The display format of the display unit can be set by selecting from a plurality of display formats when a photographer (also referred to as an operator, a doctor, or a radiographer) inputs an input from the input operation unit 78. An example of setting the display format will be described later.

  The input operation unit 78 includes, for example, a keyboard, a mouse, and the like, and outputs a key press signal pressed by the keyboard and an operation signal from the mouse to the control unit 74 as input signals. The input operation unit 78 outputs position information input by touching a transparent sheet panel covering the display screen of the display unit 77 with a finger or a dedicated stylus pen to the control unit 74 as an input signal. Or a touch panel.

  The input operation unit 78 can select a patient to be imaged, an imaging region thereof, and the like from the imaging order information. When there are a plurality of radiological image detection devices 6 associated with the console 7, the input operation unit 78 determines which radiographic image detection device 6 is to be used for imaging. It can be selected by selecting the identification ID assigned to. Thereby, setting of which radiographic image detection device 6 is used to photograph the patient is performed.

  Further, the input operation unit 78 outputs a signal related to a transfer instruction of the radiation image data obtained from the detection result by the radiation image detection device 6 based on a predetermined operation to the control unit 74. In the present embodiment, the radiographic image data obtained by imaging is transferred to the console 7 that is associated with the radiographic image detection device 6 used for imaging and operated the radiographic image detection device 6 at the time of imaging. The control unit 74 determines whether or not the information can be provided for diagnosis by associating with the patient information, imaging information, etc. of the patient selected from the patient list at the time of the setting before imaging. Radiographic image data that is associated with patient information, imaging information, and the like and determined to be able to provide diagnosis is stored in the storage unit 70 as needed, or transferred to the management server 2 or other external device and waits for interpretation. (Waiting for diagnosis).

  The communication unit 79 communicates with each device connected to the network N. The communication unit 79 communicates various information with the radiation image detection apparatus 6 through the access point 5 by a wireless communication method such as a wireless LAN.

  The control unit 74 is configured by a CPU (Central Processing Unit) or the like, and is configured to read a predetermined program stored in the ROM 76, develop it in a work area of the RAM 75, and execute various processes according to the program.

[Radiation image detector]
The radiation image detection device 6 acquires radiation image data by detecting radiation irradiated from the radiation irradiation device 3 and transmitted through the patient 12, and is also called a flat panel detector (FPD) in the cassette. It is a portable cassette type FPD device in which an imaging panel is accommodated.

  FIG. 3 is a block diagram showing a main configuration of the radiation image detection apparatus 6. As shown in FIG. 3, the control system of the radiation image detection apparatus 6 includes a control unit 64, a storage unit 60, a reduced image generation unit 62, an imaging panel 63 that functions as an imaging unit, a RAM 65, a ROM 66, a power supply unit 67, and wireless communication. The units 69 and the like are provided, and each unit is connected by a bus 61.

  The control unit 64 includes a CPU and the like, reads a control program stored in the ROM 66, develops it in a work area formed in the RAM 65, and controls each unit of the radiation image detection apparatus 6 according to the control program.

  The imaging panel 63 includes, for example, a glass substrate, and detects radiation that has been irradiated from a radiation tube and transmitted through a subject at a predetermined position on the substrate according to its intensity. A plurality of pixels that are converted into signals and accumulated are arranged in a matrix.

  Here, although illustration is omitted as the imaging panel 63, for example, a radiation light conversion layer that converts radiation into fluorescence (light), and fluorescence converted by the radiation light conversion layer is detected and converted into an electrical signal. An indirect type including a photoelectric conversion layer, and a direct type including a radiation electric signal conversion layer having a radiation receiving portion that directly converts radiation into electric charge, instead of the radiation light conversion layer and the photoelectric conversion layer, etc. Can be mentioned. Note that the indirect type is preferable because the high-voltage power source used in the direct type is unnecessary.

  The storage unit 60 includes, for example, a non-volatile memory such as a flash memory or a RAM, and can store radiation image data corresponding to a plurality of radiographs acquired by reading an electrical signal accumulated in the imaging panel 63. It is said.

  The reduced image generation unit 62 generates reduced image data from the radiation image data stored in the storage unit 60. Here, the “radiation image data” is also referred to as so-called RAW data, which is raw data before image processing output from the imaging panel, has a large dynamic range, and large luminance information per pixel. It is data. Since the radiation image data has a large data size (capacity), there is a problem that the wireless communication means described later takes a long transfer time due to a transfer speed limitation. “Reduced image data” is obtained by reducing the image size (capacity) of radiation image data, and is also referred to as a so-called thumbnail image. As a reduction process, for example, there is a method of thinning out the vertical and horizontal directions to 1/4 or 1/8, for example, with respect to the image data spreading simply in a vertical and horizontal matrix.

  The power supply unit 67 supplies power to a plurality of drive units (the control unit 64, the imaging panel 63, the storage unit 60, and the like) that configure the radiation image detection apparatus 6. The power supply unit 67 is composed of, for example, a spare battery and a rechargeable battery, and charges the rechargeable battery by connecting a charging terminal to the cradle k (see FIG. 1) connected to the console 7. Is possible. The cradle k also functions as a “connection unit” that enables the radiological image detection apparatus 6 and the console 7 to perform wired communication.

  The RFID tag 68 includes a control circuit that controls each part of the RFID tag 68, a storage unit that stores unique information of the radiation image detection device 6, an antenna that transmits and receives electromagnetic fields and radio waves, and the like (none of which are shown). ). When the electromagnetic field or radio wave transmitted from the tag reader 8 disposed at the entrance of each photographing room 100 is received via the antenna, the unique information stored in the storage unit is transmitted to the tag reader 8 via the antenna. It is configured as follows. The unique information is, for example, a unique identification number assigned to each radiation image detection device 6.

  The wireless communication unit 69 performs wireless communication of various types of information with the console 7 via the access point 5 by a wireless LAN complying with the IEEE 802.11 standard.

[Setting of display format in display section 77]
Next, an example of setting the display format will be described. FIG. 4 shows a display screen example of the captured image display screen 772 displayed on the display unit 77. FIG. 4A shows an example in which one frame of reduced image data is displayed on the imaging display screen 772. FIG. 4B is an example in which reduced image data of 4 frames is displayed on the imaging display screen 772.

  As the number of frames, in addition to the example shown in FIGS. 4A and 4B, a list of 2 frames, 3 frames, or 5 frames or more may be displayed. In the example shown in FIG. 4B, the upper limit of the number of frames that can be displayed at one time is 4 frames, and when there are 5 or more frames of reduced image data, they are arranged on the next page, and the page switching is performed. It is possible to switch by pressing the feed button 352j.

  As described above, the image size of the reduced image data displayed on the display unit 77 varies greatly depending on the display format. These display formats can be selected by the photographer by inputting from the input operation unit 78, according to the photographing information such as the modality, the number of photographing, the region to be photographed, and the presence / absence of related images. The control unit 74 may select automatically according to these conditions. Modality includes CR device and FPD device. Even in a system in which these types of modalities are mixed, the same display format can be used for the same part regardless of the modality used. Both systems can be mixed while maintaining the diagnostic flow.

  In FIG. 4B, the photographed image display screen 772 has four reduced image display fields 772a to 772d for displaying a list of extracted images. In the same figure, an OK button 35h functions as a “determining input unit”.

  The photographer determines whether or not the photographer is suitable as a diagnostic image for disease diagnosis by referring to the reduced image data displayed in the reduced screen display fields 772a to 772d or the reduced screen display field 772m. When it is determined that the image can be used and the shooting is normally completed, the shooting is ended by pressing an OK button 772h. On the other hand, if the imaging region is inappropriate or if the imaging is blurred due to the movement of the patient at the time of imaging, the imaging did not end normally and re-imaging is necessary. In such a case, the NG button 772i is pressed. In this case, the imaging order information corresponding to the radiation image data for which the NG button 772i is pressed may be registered again in a folder for re-imaging.

  Each reduced image is processed by an image processing unit (not shown) under the optimum image processing conditions (for example, gradation) according to the histogram analysis of the received reduced image and the preset part information. Is given. An image processing adjustment field 772e is provided at the upper right of the screen, and the photographer can adjust the density and contrast by operating the image processing adjustment field 772e with a mouse or the like. When the OK button 772h displayed corresponding to each image is pressed, it can be confirmed that the photographing has been completed normally. The captured image display screen 772 is provided with a patient information display column 772f for displaying patient information included in the imaging order information associated with the displayed captured image.

[Control flow]
FIG. 5 is an explanatory diagram of a control flow of the radiographic image capturing system 1 in the present embodiment. First, in step S11 of FIG. 5, the console 7 transmits the setting information of the display format set for the radiographer to the radiographic image detection apparatus 6 that performs imaging. The transmission here is performed from the communication unit 79 via the access point 5 to the radiation image detection apparatus 6 by wireless communication.

  In the next step S <b> 12, the radiation image detection apparatus 6 stores the received display format setting information in the storage unit 60. Here, the display format setting information is, for example, the image size (number of pixels in the vertical and horizontal directions) of the reduced image data displayed on the display unit 77, or the number of frames displayed simultaneously on one screen.

  In step S13, the radiographic image detection apparatus 6 performs imaging based on the imaging order. Imaging means that a radiographer irradiates radiation from the radiation irradiation device 3 by operating the imaging operation device 4, and acquires radiation image data by detecting radiation transmitted through the patient 12 by the radiation image detection device 6. It is. At this time, if there are a plurality of imaging orders for one patient, the number of imaging is plural. These radiation image data are stored in the storage unit 60.

  In step S14, the control unit 64 performs a reduction process on the radiation image data acquired in step S13 based on the display format setting information stored in step S12 by the reduced image generation unit 62, thereby reducing the reduced image. Generate. Note that the reduction rate (also referred to as a thinning rate) in this step varies depending on display format setting information and size information that can be captured by the radiation image detection device 6. Note that the size information of each radiation image detection device 6 is stored in advance in each ROM 66.

For example, an image of half-cut size (14 × 17 inches) read with a pixel size of 175 μm (the number of pixels is 2010 × 2400) is compressed by 1/15 in both length and width (therefore, the number of pixels is 134 × 160). The reduction ratio (compression ratio) in the case of the display format is as follows.
(1) If the shooting size is half cut (14 × 17 inches), each image generates a thinned image compressed to 1/15. The reason why the thinning ratio is the same in the vertical and horizontal directions is to maintain the same aspect ratio of the image as the original image (original image).
(2) In the case of a large angle (14 × 14 inches), similarly, the vertical and horizontal compression is 1/15, but the displayed image has no image data in a part of the vertical direction of the format. By assigning and displaying a low luminance value, the viewer can be prevented from dazzling.
(3) In the case of a large square cut (11 × 14 inches), the compression ratio in the horizontal direction is 1/15 * 14/11 = 1 / 11.78 (accordingly, the compression ratio is 1/12), and the compression ratio in the vertical direction 1/15 * 17/14 = 1 / 12.35 (accordingly, a compression ratio of 1/13), whichever is the larger compression ratio (1/13). Also in this case, since there is a region where some image data does not exist in the displayed image, low luminance data is assigned in the same manner as described above to prevent dazzling.

As another example, a half-cut (14 × 17 inch) image (pixel number 2010 × 2400) read with a pixel size of 175 μm is compressed by 1/10 both vertically and horizontally (thus 201 × 240 pixels), and 4 The reduction ratio (compression ratio) in the case of the frame setting display format is as follows.
(1) If the shooting size is half cut (14 × 17 inches), each image generates a thinned image compressed to 1/10. The reason why the thinning ratio is the same in the vertical and horizontal directions is to maintain the same aspect ratio of the image as the original image (original image).
(2) In the case of a large angle (14 × 14 inches), the image is similarly compressed in the vertical and horizontal directions, but the displayed image has no image data in a part of the vertical direction of the format. By assigning and displaying a low luminance value, the viewer can be prevented from dazzling.
(3) In the case of a large square cut (11 × 14 inches), the horizontal compression ratio 1/10 * 14/11 = 1 / 7.86 (according to 1/8 compression ratio), the vertical compression ratio 1 /10*17/14=1/8.23 (accordingly, compression ratio of 1/9), whichever is the larger compression ratio (1/9). Also in this case, since there is a region where some image data does not exist in the displayed image, low luminance data is assigned in the same manner as described above to prevent dazzling.

  In step S15, the control unit 64 transmits the reduced image data created in step S14 to the console 7 through the wireless communication unit 69.

  In step S16, the control unit 74 of the console 7 displays the reduced image data received in step S15 on the display unit 77, and the process ends.

  According to the present embodiment, in a radiographic image capturing system using a portable radiographic image detection device that performs wireless communication, radiographing is performed on captured radiographic image data by referring to the reduced image data transmitted by the photographer. It is possible to quickly and correctly check whether there is a mistake.

[Control Flow in Second Embodiment]
Next, the radiographic image capturing system 1 according to the second embodiment is performed based on FIGS. 6 and 7. In the second embodiment, the RFID tag 68 of the radiological image detection device 6 and the tag reader 8 disposed at the entrance of the radiographing room 100 detect the entry into each radiographing room 100 and correspond to the detected radiographing room 100. The reduced image data is transmitted to the console that performs the operation.

  FIG. 6 is a diagram for explaining the movement of the radiation image detection device 6 in the radiation image capturing system 1. As shown in the figure, the radiation image detection device 6 is initially present in the imaging room 100a. After the radiographic image detection apparatus 6 performs imaging based on the imaging order information, the radiographic image detection apparatus 6 moves to another imaging room 100b and continues imaging.

  FIG. 7 is an explanatory diagram of a control flow of the radiation image capturing system 1 in the second embodiment. The control flow of FIG. 6 is control performed between the console 7b associated with the imaging room 100b as the imaging area of the movement destination shown in FIG. 6 and the radiation image detection apparatus 6 moved by the photographer. is there.

  In step S21, the tag reader 8 detects that the radiation image detection device 6 has entered the imaging room 100b by reading the information of the RFID tag 68 of the moved radiation image detection device 6, and the detected information is The image is sent to the console 7b corresponding to the imaging room 100b in which the tag reader 8 is disposed (Yes in step S21).

  In the next step S22, the console 7b wirelessly communicates the set display format setting information and its own console ID via the access point 5 to the radiation image detection apparatus 6 that has detected the entry in step S21. Send by.

  In step S <b> 23, the radiological image detection apparatus 6 stores display format setting information in the storage unit 60. Further, if there is display format setting information received in the past (for example, when entering the photographing room 100a), the display format setting information may be updated by overwriting the information, and the reception time may be set. The setting information of the display format that is managed and received last may be validated.

  In step S24, the radiographic image detection apparatus 6 performs imaging based on the imaging order. At this time, if there are a plurality of imaging orders for one patient, imaging is continued. In this case, a plurality of pieces of radiation image data are obtained. These radiation image data are stored in the storage unit 60.

  In step S25, input of a transmission trigger is waited. When a transmission trigger is input in accordance with an instruction from the photographer (Yes in step S25), transmission is performed in subsequent step S26. Here, the “transmission trigger” may be input by, for example, operating the transmission switch provided on the exterior of the radiation image detection device 6 or by the operator operating the transmission switch, or the operator may place the radiation image detection device 6 in the cradle k. It may be considered that a transmission trigger has been input by loading and detecting the fact by the control unit 64.

  In step S26, the control unit 64 uses the reduced image generation unit 62 to create reduced image data based on the display format setting information updated in step S23, that is, the last received display format setting information with the latest reception time. Let Note that the radiation image data to be reduced in this step is stored in the storage unit 60. The radiographic image data includes radiographic image data obtained by imaging in another imaging region, in addition to the radiographic image data acquired in step S24. In addition, the reduction rate (also referred to as a thinning rate) at the time of reduction in step S26 varies depending on the display format setting information.

  In step S27, the control unit 64 uses the wireless communication unit 69 to transmit the reduced image data created in step S26 to the console 7b to which the console ID transmitted in step S22 is assigned.

  In step S28, the control unit 74 of the console 7b causes the display unit 77 to display the reduced image data received in step S15. The above is the control flow until the radiation image data is reduced based on the display format setting and the reduced reduced image data is transmitted. Next, a post-processing control flow will be described.

[Post-processing control flow]
In step S51, the photographer sets image processing conditions for the reduced image data displayed. As described above, the image processing condition can be adjusted by adjusting the image processing adjustment field 772e (FIG. 4A, etc.) with a mouse or the like. When the photographer presses the OK button 772k, the displayed “image processing conditions” are stored in the storage unit. In addition to the method of adjusting by the photographer in the image processing adjustment field 772e, the control unit 74 may set the setting automatically. As a setting method, for example, in an image processing unit (not shown), an optimal image processing condition (for example, gradation, contrast, etc.) according to histogram analysis of the luminance data of the received reduced image, or according to preset part information There is a way to set. Further, after the automatic image processing, adjustment by the image processing adjustment field 772e described above may be performed.

  In step S52, the photographer determines whether or not re-shooting is necessary by referring to the reduced image data displayed on the shot image display screen 772 (FIG. 4B). If the imaging part is inappropriate or if the imaging is blurred due to the movement of the patient at the time of imaging, the imaging did not end normally, and re-imaging is necessary. If it is determined that reshooting is necessary (Yes in step S51), the NG button 772i is pressed. In this case, for the radiation image data for which the NG button 772i has been pressed, the imaging order is registered again in the folder for re-imaging, and the flow after step S24 is executed again.

  On the other hand, when the photographer determines that re-photographing is not necessary (No in step S51), the process proceeds to the next step S53 by pressing the OK button 773h. In this step, the control unit 74 transmits the original (before reduction) radiation image data corresponding to the reduced image data determined not to be re-imaged in step S52 to the radiographic image detection apparatus 6 that has performed imaging. Request.

  In step S54, the control unit 64 of the radiological image detection apparatus 6 transmits the corresponding radiographic image data to the requested console 7b.

  This transmission may be performed by the wireless communication unit 69 via the access point 5 or, if the radiation image detection device 6 is loaded in the cradle k, “wired communication” via the cradle k. You may make it transmit to the console 7b. In order to perform wired communication, the radiation image detection device 6 must be moved to a predetermined position or connected to a connector, but transfer of radiation image data having a large data size can be performed in a short time. There is a merit.

  In step S55, the control unit 74 displays the radiation image data transmitted from the radiation image detection device 6 in step S54 on the display unit 77, executes image processing on the displayed radiation image data, and processes the processed image data. create. As the image processing conditions at this time, processed image data is created by applying the “image processing conditions” applied to the reduced image data corresponding to the radiation image data in step S51. In general, there is no particular problem even if the "image processing conditions" set in the reduced image data are applied to the original radiation image data. When selecting the image processing conditions by setting the image processing conditions in the reduced image data, There is an advantage that processing can be performed quickly. This is particularly useful when automatically setting image processing conditions.

  In step 56, the control unit 74 transmits the processed image data to the management server 2 as an external device. Then, the processed image data is stored in the storage device 21 of the management server 2 in association with the imaging order, and the processing ends.

  According to the present embodiment, in a radiographic imaging system using a portable radiographic image detection device that performs wireless communication, the RFID tag detects the entry of the radiographic image detection device 6 into the imaging region, and the detected imaging region is detected. The reduced image data generated based on the display format information of the associated console is transmitted to the console, and the photographer refers to the transmitted reduced image data, so that the captured radiographic image data is It is possible to quickly and correctly check whether there has been a shooting mistake.

  In the present embodiment, the shooting flow over two shooting areas has been described. However, the shooting over three or more shooting areas is also possible. Further, although a console is arranged for each photographing area, a console that is shared by a plurality of photographing areas may be used. In this case, the image data is transmitted to the console closest to the photographer, which is associated with the shooting area where the last shooting was performed.

It is a figure which shows schematic structure of the radiographic imaging system 1 in this embodiment. 3 is a block diagram showing a main part configuration of a console 7. FIG. 3 is a block diagram illustrating a configuration of a main part of the radiation image detection device 6. FIG. FIG. 4A shows an example in which one frame of reduced image data is displayed on the imaging display screen 772. FIG. 4B is an example in which reduced image data of 4 frames is displayed on the imaging display screen 772. It is explanatory drawing of the control flow of the radiographic imaging system 1 in this embodiment. It is a figure explaining the movement of the radiographic image detection apparatus 6 in the radiographic imaging system 1. FIG. It is explanatory drawing of the control flow of the radiographic imaging system 1 in 2nd Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radiographic imaging system 2 Management server 21 Storage apparatus 3 Radiation irradiation apparatus 4 Imaging operation apparatus 5 Access point 6 Radiographic image detection apparatus 62 Reduced image generation part 60 Storage part 63 Imaging panel 68 RFID tag 7, 7a, 7b Console 77 Display part 78 Input operation unit 8 Tag reader

Claims (7)

An imaging unit that generates radiation image data based on radiation that has passed through a subject, a storage unit that stores a plurality of generated radiation image data, and a reduction that generates reduced image data from the radiation image data stored in the storage unit A radiological image detection apparatus comprising: an image generation unit;
A console including a display unit that displays reduced image data received from the radiological image detection device based on the set display formation;
Wireless communication means for enabling wireless communication between the radiological image detection apparatus and the console;
A radiographic imaging system comprising:
The console transmits information on the set display format to the radiation image detection device,
The radiological image detection apparatus causes the reduced image generation unit to generate reduced image data from the radiation image data based on the received display format information, and transmits the generated reduced image data to the console by the wireless communication unit. A radiographic imaging system characterized in that The reduced image generation unit is configured to change a reduction ratio when generating reduced image data from radiation image data based on the number of reduced image data to be transmitted to the console and information on the display format. The radiographic imaging system according to 1. A plurality of imaging regions each having at least one radiation irradiation device disposed;
An imaging unit that performs imaging based on radiation irradiated from the radiation irradiation apparatus and transmitted through the subject to acquire radiation image data, a storage unit that can store a plurality of radiation image data captured by the imaging unit, and A radiological image detection apparatus comprising: a reduced image generation unit that generates reduced image data in which an image size of the radiographic image data stored in the storage unit is reduced; and an RFID tag;
A console associated with any of the imaging regions and provided with a console ID, and displaying a reduced image data received from the radiation image detection device based on a set display formation; Multiple consoles with
An RFID tag reader that detects the entry of the radiation image detection device into the imaging region by reading information of the RFID tag;
Wireless communication means for enabling wireless communication between the radiological image detection apparatus and the console;
A radiographic imaging system comprising:
When the RFID tag reader detects the entry of the radiation image detection device into the imaging area, the console associated with the imaging area displays the assigned console ID and the information on the set display format. Transmitted to the radiation image detection device,
When the transmission trigger is input, the radiological image detection device causes the reduced image generation unit to generate reduced image data from the radiation image data based on the information of the display format received last, and the generated reduced image A radiographic imaging system, wherein data is transmitted to the console to which the console ID last received by the wireless communication means is assigned. The reduced image generation unit is configured to change a reduction ratio when generating reduced image data from radiation image data based on the number of reduced image data to be transmitted to the console and information on the display format. 3. The radiographic imaging system according to 3. The console has a confirmation input unit for confirming that radiographic image data photographed by referring to the reduced image data displayed on the display unit by the photographer has been successfully photographed,
5. The console causes the radiological image detection apparatus to transmit radiographic image data corresponding to the reduced image data displayed on the display unit based on an input from the confirmation input unit. The radiographic imaging system described in 1. Having a connection section that enables wired communication between the radiological image detection apparatus and the console by loading the radiographic image detection apparatus;
The radiographic image capturing system according to claim 5, wherein the radiographic image data is transmitted to the console of the radiographic image detection apparatus by wired communication via the connection unit. The console sets image processing conditions based on the reduced image data,
7. The processed image data is generated by applying the set image processing conditions to radiation image data corresponding to the reduced image data, and the generated processed image data is transmitted to an external device. The radiographic imaging system described.

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