JP2000350719A - Radiation solid detection apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the loads of a photographer and a photographed person and improve the using efficiency of a radiation photographing apparatus by providing a radiation solid detection sensor which detects image-information- carrying radiation and outputs an image-information-carrying electric image signal, and a radiation permeable display which displays an image. SOLUTION: When setting of photographing site of a photographed person is completed, photographing is carried out. Radiation Ha emitted from a radiation source 200 permeates an object to be photographed 300, and reaches a radiation solid detection sensor 10 as image-information-carrying radiation Hb. This radiation Hb is detected with a radiation solid detection sensor 10, is outputted by converting to a detected image signal of an electric image signal, and is memorized in an image signal memory. When information photographing plural parts and directions is inputted from an operation panel 60, control CPU repeats the signals operating them plural times to a display 20 and a speaker part 40. These images are all converted to detection image signals and memorized in an image signal memory.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-state radiation detecting apparatus provided with a display for detecting radiation image information with a solid-state radiation detecting sensor and displaying photographing information and the like in radiation imaging.

[0002]

2. Description of the Related Art A solid-state radiation detection sensor that detects radiation carrying image information, converts the radiation into an electric image signal, and outputs the signal is mainly formed using a semiconductor. For example, it converts incident radiation directly into electric charges. After converting the light into a charge using a phosphor or the like, the light is converted into a charge, the charge is temporarily stored in a power storage unit, and then the stored charge is converted into an electric image signal representing the image information. Output to the outside.

There are various types of radiation solid-state detection sensors. For example, from the viewpoint of a charge generation process for converting radiation into electric charges, the irradiated radiation is converted into light (fluorescence) by a fluorescent substance. A light conversion method of detecting light with a photoelectric conversion element to obtain a signal charge, temporarily storing the signal charge in a power storage unit of the photoelectric conversion element, converting the stored signal charge into an electric signal (image signal), and outputting the signal. Radiation solid state detection sensor (for example, JP-A-59-211263, JP-A-2-2-164067,
PCT International Publication No. WO92 / 06501) and signal charges generated by irradiating radiation to a radiation conductor that exhibits conductivity by irradiation are attracted to the charge collection electrode and temporarily stored in the power storage unit. A direct conversion type solid-state radiation detection sensor (for example, Japanese Patent Application Laid-Open No. 1-216290) that converts a signal charge into an electric signal and outputs the electric signal is known.

On the other hand, from the viewpoint of a charge reading process for reading out the stored charges to the outside, a TFT connected to the power storage unit is required.
There are known a TFT reading method of scanning and reading a (thin film transistor) and an optical reading method of reading out by irradiating a detector with reading light. Also, among the optical reading systems, Japanese Patent Application Nos. 10-232824 and 10-271374 by the present applicant combining the direct conversion system and the optical reading system are disclosed.
And the improved direct conversion method proposed in the above issue.

When a radiation image of an affected part of a subject is taken by the solid-state radiation detecting apparatus using the solid-state radiation detecting sensor, the photographer first goes to the subject, and the photographer takes steps to take the subject. Give the photographer instructions on body position and arrangement, place the photographed person in a predetermined position and direction,
Improve your body position (posture). Next, the photographer irradiates radiation with the illumination for confirming the irradiation field, and captures an image (irradiation field).
The irradiation position and irradiation area (irradiation field stop) of the radiation are adjusted while confirming that the radiation is irradiated to an appropriate position and range. Subsequently, the photographer returns to the place where the radiation irradiation switch and the controller for setting the photographing conditions are installed, and irradiates the photographed portion with radiation to perform photographing. In addition, when performing a plurality of imagings for the same subject, for example, when changing the body position to the front, side, or oblique, the photographer repeats the above operation to perform imaging.

[0006] For a portion that does not require a large imaging area such as a limb or a child, a region smaller than the detection surface of the solid-state radiation detection sensor is set as an effective image region, and image data is acquired only from the effective image region. The memory area for storing data is saved.

[0007]

However, the photographer goes to the subject and gives an instruction of the gait position and arrangement so that the photographed part is photographed in the photographing area in an appropriate posture. Returning to the place where the controller is installed, taking a picture, and going to the subject again at the next shooting and giving directions again is inefficient, and the subject is taken only by the verbal instruction of the photographer Even if he or she tries to take a picture by adjusting the posture, the subject cannot easily understand what position to take, so after all, a lot of time is spent on the shooting and the photographer and the subject The burden required for the setting of both shootings increases, and the efficiency of use of the apparatus deteriorates.

The present invention has been made in view of the above circumstances, and reduces the burden on the photographer and the subject and improves the use efficiency of the radiation photographing apparatus by shortening the time required for setting the photographing. It is an object of the present invention to provide a radiation solid-state detection device capable of performing the above-mentioned operations.

[0009]

According to the present invention, there is provided a solid-state radiation detecting apparatus for detecting a radiation carrying image information and outputting an electric image signal carrying the image information. A radiation-transmissive display for displaying an image disposed on the front side of the solid-state detection sensor.

As the display, an organic EL or a liquid crystal can be used. As the liquid crystal, a reflection type liquid crystal can be used.

The display preferably has a radiation absorptivity of not more than 20% and a thickness of not more than 10 cm.

The display may display information to be given to a photographer or a subject.

It is preferable that the display has substantially the same size as the radiation solid state detection sensor when viewed from the front.

[0014] The radiation solid state detector may further include a speaker for generating sound.

The radiation solid state detection device further includes an image output unit that prints an image displayed on the display as a visible image, and accommodates the image output unit, the sensor, and the display in a single housing. It can be made.

The "organic EL" is a flat display element in which a light emitting layer of an organic compound is sandwiched between electrodes, and emits light from a hole injected from one (front) electrode and the other (back). This occurs when electrons injected from the electrode of (2) recombine in the light-emitting layer and excite a fluorescent dye or the like, which is the emission center.

[0017]

According to the radiation solid state detection device of the present invention,
By arranging a radiation-transmissive display for displaying an image on the front side of the solid-state radiation detection sensor, the photographer can display, for example, an irradiation field on the display arranged on the front side of the solid-state radiation detection sensor, This effective image is used to adjust the aperture of the radiation source in accordance with the area, or to set an area smaller than the detection surface of the solid-state radiation detection sensor as an effective image area for parts that do not require a large imaging area such as limbs or children. By displaying the region on the display device, it is possible to prevent the photographed part from being erroneously photographed outside the effective image region, and to display a figure and an illustration relating to the body position and arrangement required for the subject, and It is also possible to display a cautionary point or the like regarding the photographing in characters and give an instruction to the photographed person regarding the setting of the photographing.

On the other hand, from the viewpoint of the subject, for example, in addition to a verbal instruction from the photographer, characters displayed on the display device,
By looking at the illustrations and illustrations, you can easily understand what precautions you need to take and what kind of posture you should take. By changing the orientation, the posture can be adjusted so that useful information for diagnosis can be obtained, so that the burden on both the photographer and the subject can be reduced, and the photographing can be performed. Also, the time required for setting is shortened, so that the utilization efficiency of the radiation imaging apparatus can be improved.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a solid-state radiation detecting apparatus according to an embodiment to which the present invention is applied.

The solid-state radiation detector 1 according to the present embodiment.
Reference numeral 00 denotes a radiation solid state detection sensor 10 that detects radiation carrying image information and outputs an electric image signal carrying the image information, and a display 20 that displays characters, figures, illustrations, or irradiation fields. An image output unit 30 that prints image information displayed on the display 20 as a visible image,
A speaker section 40 for generating sound, an image output section 30, a display 20, and a control processing section 5 for controlling the speaker section 40
0 and an operation panel 60 for giving a command to the control processing unit 50. The solid-state radiation detecting apparatus 100 is held by a stand 400 so that the upper and lower positions of the solid-state radiation detecting apparatus 100 can be adjusted in accordance with the imaging region of the subject 300.

As shown in FIG. 2, the control processing section 50 detects the detected image signal D output from the solid-state radiation detecting sensor 10.
a, an image signal memory 51 for inputting and storing a, a detection image signal Da output from the image signal memory 51, and a command signal Cd output from the operation panel 60, and the display unit 20, the image output unit 30, and the speaker unit A control CPU 52 outputs a display signal Hj, an image output signal Gs, and an audio signal Sp corresponding to each operation.

The display 20 is made of an organic EL, has an absorptivity of radiation of 20% or less, a thickness of 10 cm or less, is disposed with the side facing the radiation source 200 as a front surface, and is viewed from the front, that is, in FIG. When viewed from the direction of arrow A, the size of the radiation solid state detection sensor 10 is substantially the same.

Next, the operation of the first embodiment will be described.

First, information necessary for photographing (for example, a portion to be photographed, the number of photographed images, the direction of photographing, etc.) is input from the operation panel 60. The information on the photographing input from the operation panel 60 is converted into a command signal Cd and output to the control CPU 52. The control CPU 52 displays the display 2 according to the information on the imaging obtained by the input of the command signal Cd.
0 and the audio signal Sp for operating the speaker unit 40 are output to the display unit 20 and the speaker unit 40, respectively. The display unit 20 and the speaker unit 40 receiving the signals output the respective signals. Accordingly, an operation related to the setting of photographing is performed.

As a specific example of the operation related to the setting of the display device 20, for example, an outline of an irradiation field as shown in FIG. 3 is displayed, or as shown in FIG. The illustration of the chest, which is the part, is displayed, and FIG.
As shown in (b) and (c), attention points at the time of photographing are displayed by characters, and when the subject is a child, a moving image is displayed as shown in FIG. Or you can.

Further, as a specific example of the operation related to the setting of the speaker unit 40, for example, an attention point at the time of photographing is announced in a language corresponding to the age of the subject, or music for relaxing tension is played. I do.

As described above, the photographer can give an instruction using the display 20 and the speaker unit 40 in addition to giving the instruction to the person to be photographed orally. On the other hand, the photographed subject follows the verbal instructions of the photographer, adjusts his or her posture in accordance with the illustration such as the chest displayed on the display unit 20, or adjusts the breathing in accordance with the music and announcements heard from the speaker unit 40. Therefore, the photographer does not need to go to the subject and give a hand / footstep instruction.

When the setting of the imaging region of the subject is completed, imaging is performed next. The radiation Ha emitted from the radiation source 200 passes through the subject 300 and reaches the solid-state radiation detection sensor 10 as radiation Hb carrying image information of the subject 300 (see FIG. 1). This radiation Hb is detected by the radiation solid state detection sensor 10, converted into a detected image signal Da that is an electric image signal, and output.
It is stored in the image signal memory 51 (see FIG. 2). When information for photographing a plurality of parts and directions is input from the operation panel 60, the control CPU 52 outputs a signal for operating the display unit 20 and the speaker unit 40 a plurality of times to the display unit 20 and the speaker unit. The operation of the unit 40 is repeated a plurality of times in accordance with the respective signals, and the shooting is performed a plurality of times. All of the images are converted into the detected image signal Da, stored in the image signal memory 51, and the shooting is completed.

When an area smaller than the detection surface of the solid-state radiation detection sensor 10 is taken as an effective image area for a part that does not require a large imaging area, such as a limb or a child, that area is displayed on a display. By doing
It is possible to prevent the photographed part from being photographed by mistake outside the effective image area.

In order to check the photographing quality after the photographing is completed, a command to display the photographing result is given from the operation panel 60. The control CPU 52 receiving this command inputs the detected image signal Da stored in the image signal memory 51, converts the detected image signal Da into a display signal Hj, and outputs it to the display 20. The display 20 to which the display signal Hj has been input displays the result of the photographing as shown in FIG. 5, so that the photographer can confirm immediately after the photographing whether or not the photographing has been performed normally.

Further, when it is necessary to immediately obtain the result of imaging as information for use in diagnosis, a command for displaying information for use in diagnosis is given from the operation panel 60, and the control CPU 52 receiving the command gives the image signal memory. The detected image signal Da stored in 51 is subjected to necessary image processing such as setting of magnification, gradation processing, sharpening processing, and dynamic range compression processing.
Will be displayed. Information for diagnosis can be immediately obtained by displaying the image on which the image processing has been performed. Also,
When printing the result displayed on the display unit 20 as a visible image as information to be used for diagnosis, a command to output an image from the operation panel 60 is given to the control CPU 52 again. Control CPU 52 that has received an instruction to output an image
Outputs an image output signal Gs for printing an image corresponding to the content displayed on the display unit 20 to the image output unit 30, and is displayed on the display unit 20 by the image output unit 30 to which the image output signal Gs is input. An image corresponding to the contents of the print is printed and output as a visible image on the printing paper Pa. Here, depending on the displayed content means that the resolution of the obtained image is different between the display and the image output unit,
This means that images are printed at different resolutions according to the content displayed on the display.

The solid-state radiation detecting apparatus according to the present invention has a vertically-positioned type in which a solid-state radiation detecting sensor for detecting radiation as shown in FIG. 1 and a display disposed in front of the solid-state radiation detecting sensor are arranged perpendicular to the floor. For example, as shown in FIG. 6, the solid-state radiation detection sensor 10 and a display 20 disposed in front of the radiation solid-state detection sensor 10 can be applied to a horizontal type device in which the sensor 20 is disposed horizontally with respect to the floor. In the case of a horizontal type device, for example, as shown in FIGS. 7A and 7B, the same is achieved by displaying a diagram of a foot and a hand, an illustration, a character, or the like, which is a shooting target suitable for a horizontal type device. The effect of can be obtained.

In the display of the area where the solid-state radiation sensor and the display unit overlap, the display interval is made coarse to display only the irradiation field, and in the display of the area where the radiation solid state detection sensor and the display do not overlap, the display interval is made finer. Characters and the like can be displayed.

As shown in FIG. 8, the region where the solid-state radiation detection sensor and the display unit overlap may include the region of the solid-state radiation detection sensor (indicated by the outline Hk) in the display unit (in the outline Ry1). The indicator may be included in the region of the solid-state radiation detection sensor (indicated by an outline Ry2), or a part of both regions may overlap (indicated by an outline Ry3).

Further, a part of the display may be used as a touch panel as shown in FIG. 9, and the display may also have a function of an operation panel.

As described above, according to the embodiment of the present invention, by shortening the time required for setting the photographing,
The burden on both the photographer and the subject can be reduced, and the utilization efficiency of the solid-state radiation detector can be increased.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a solid-state radiation detecting apparatus according to an embodiment of the present invention;

FIG. 2 is a block diagram illustrating details of processing performed by a control processing unit;

FIG. 3 is a diagram showing an example of an irradiation field displayed on a display device.

4A is a diagram showing a position where a body is to be combined; FIG. 4B is a diagram showing a combination of a body and a character; FIG. 4C is a diagram showing a combination of a body and a character. Figure (c) Image showing a video for children

FIG. 5 is a diagram showing a radiation image displayed on a display device.

FIG. 6 is a schematic configuration diagram when the radiation solid state detection device according to the embodiment of the present invention is configured in a horizontal type.

FIG. 7A is a diagram of a display example displayed on a display of a horizontal solid-state radiation detection device. FIG. 7B is a diagram of a display example displayed on a display of a horizontal solid-state radiation detection device.

FIG. 8 is a diagram showing an area where a solid-state radiation detection sensor and a display unit overlap;

FIG. 9 is a diagram of a display example when a part of the display is a touch panel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Radiation solid detection sensor 20 Display 30 Image output part 40 Speaker part 50 Control processing part 60 Operation panel 100 Radiation solid detection apparatus 200 Radiation source 300 Subject 400 Stand

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04R 1/02 103 H04R 1/02 103Z

Claims (11)

[Claims] 1. A radiation solid state detection sensor for detecting radiation carrying image information and outputting an electric image signal carrying the image information, and displaying an image disposed in front of the radiation solid state detection sensor. And a radiation-transmissive display device. 2. The radiation solid-state detection device according to claim 1, wherein the display is constituted by an organic EL. 3. The radiation solid-state detection device according to claim 1, wherein the display is made of a liquid crystal. 4. The radiation solid state detecting device according to claim 3, wherein the liquid crystal is of a reflection type. 5. The radiation solid-state detection device according to claim 1, wherein the radiation absorption rate of the display is 20% or less. 6. The radiation solid-state detection device according to claim 1, wherein the thickness of the display is 10 cm or less. 7. The radiation solid-state detection device according to claim 1, wherein the display displays information given to a subject. 8. The solid-state radiation detecting apparatus according to claim 1, wherein the display displays information given to a photographer. 9. The radiation solid state detection device according to claim 1, wherein the display has substantially the same size as the radiation solid state detection sensor in a front view. 10. The radiation solid-state detection device according to claim 1, further comprising a speaker that generates a sound. 11. An image output unit for printing an image displayed on the display as a visible image, wherein the image output unit, the radiation solid state detection sensor, and the display are connected to one another.
The radiation solid-state detection device according to any one of claims 1 to 9, wherein the radiation solid-state detection device is housed in one housing.