JP2011212067A - Radiological image taking and displaying method and system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To acquire a correct thickness of a subject and to display a stereovision image having an appropriate sense of depth corresponding to its thickness.SOLUTION: Information on the thickness of the subject is acquired by using a radiological image which is detected by a radiological image detector by exposure of the subject to radiation from a predetermined first radiography direction (θ=0°). A range (90°±θ) of the radiography direction of a radiological image which is used for displaying a stereovision image in a second direction (θ=90°) different from the first radiography direction (θ=0°) is acquired on the basis of the acquired information on the thickness. A stereovision image in the second direction (θ=90°) is displayed by using the radiological image which is detected by the radiological image detector by exposure of the subject to radiation within the acquired range of radiography direction.

Description

  The present invention relates to a radiographic imaging display method and system for displaying a stereoscopic image using a radiographic image detected by a radiographic image detector by irradiating a subject from different directions.

  Conventionally, it is known that stereoscopic viewing can be performed using parallax by displaying a plurality of images in combination. Such a stereoscopically viewable image (hereinafter referred to as a stereoscopic image or a stereo image) is generated based on a plurality of images having parallax obtained by photographing the same subject from different positions.

  Such generation of stereoscopic images is used not only in the fields of digital cameras and televisions but also in the field of radiographic imaging. That is, the subject is irradiated with radiation from different directions, the radiation transmitted through the subject is detected by the radiation image detector, and a plurality of radiation images having parallax are obtained, and based on these radiation images A stereoscopic image is generated. And by generating a stereoscopic image in this way, a radiographic image with a sense of depth can be observed, and a radiographic image more suitable for diagnosis can be observed.

  Here, the above-described stereoscopic image has a different sense of depth depending on an angle difference between imaging angles of a plurality of radiographic images that generate the stereoscopic image.

  For example, when generating a stereoscopic image for each subject using radiographic images obtained by imaging subjects having different thicknesses, a stereoscopic image of each subject is generated using the radiographic images captured with the same angle difference. As a result, there arises a problem that at least one of the stereoscopic images cannot provide a sufficient depth feeling, or the parallax becomes too large to be stereoscopically viewed. This is the same when generating stereoscopic images of parts having different thicknesses.

  Therefore, for example, in Patent Document 1, a distance obtained by adding the distance from two radiation sources to the top of the subject and half of the thickness of the subject is acquired, and based on the distance so as to obtain a desired convergence angle. It has been proposed to calculate an interval (base line length) between two radiation sources and move the two radiation sources so as to be the interval.

JP 2005-168601 A

  However, in the method described in Patent Document 1, nothing has been proposed as to how to obtain the thickness of the subject. If the thickness is not accurate, the above-described problem will occur.

  In view of the above circumstances, the present invention can acquire an accurate thickness of a subject, and can display a stereoscopic image having an appropriate sense of depth according to the thickness. And to provide a system.

  The radiographic imaging display method of the present invention acquires a radiographic image for each imaging direction detected by a radiographic image detector by irradiating a subject from different imaging directions, and the acquired radiographic image for each imaging direction is acquired. In a radiographic image display method for displaying a stereoscopic image by using a radiographic image detected by a radiographic image detector by irradiating a subject from a predetermined first imaging direction with the radiation image, the thickness information of the subject is acquired. Then, based on the acquired thickness information, a range of the radiographing direction used to display a stereoscopic image in a second direction different from the first imaging direction is acquired, and the acquired imaging Displaying a stereoscopic image in the second direction using the radiation image detected by the radiation image detector by irradiating the subject in the direction range with radiation. To butterflies.

  A radiographic imaging display apparatus of the present invention includes a radiation irradiating unit that irradiates a subject with radiation from different imaging directions, a radiological image detector that detects radiation that has been irradiated by the radiation irradiating unit and transmitted through the subject, and a radiographic image detection In a radiographic imaging display system comprising a display device that acquires a radiographic image for each imaging direction detected by a device and displays a stereoscopic image using the acquired radiographic image for each imaging direction. In order to acquire the thickness information of the subject, the subject is irradiated with radiation from a predetermined first imaging direction, and detected by the radiation image detector by irradiation of the subject from the first imaging direction. Based on the thickness information acquired by the thickness information acquisition unit, and the thickness information acquisition unit that acquires the thickness information of the subject using the radiographic image, An imaging range acquisition unit that acquires a range of an imaging direction of a radiographic image used to display a stereoscopic image in a second direction different from the imaging direction of the first imaging direction, and the radiation irradiation unit has a second direction The object is irradiated with radiation in the imaging direction range acquired by the imaging range acquisition unit to acquire a radiographic image used for displaying a stereoscopic image, and the display device has an imaging direction range. A stereoscopic image in the second direction is displayed using a radiation image detected by a radiation image detector by irradiation of the subject with radiation.

  In the radiographic imaging display system of the present invention, the first imaging direction and the second direction can be orthogonal to each other.

  In addition, the display device can display a stereoscopic image in a predetermined direction using a radiographic image detected by a radiographic image detector by irradiating the subject from the first imaging direction with radiation.

  Further, the radiation irradiating unit irradiates the subject with radiation from at least three different directions in the imaging direction range, and the radiation image detected by the radiation image detector by irradiating the subject with radiation from at least three directions A radiographic image storage unit that stores in advance, and a radiographic image selection unit that selects two radiographic images used to display a stereoscopic image in the second direction from the radiographic images stored in the radiographic image storage unit are provided. The display device can display a stereoscopic image in the second direction using the two radiographic images selected by the radiographic image selection unit.

  In addition, a stereoscopic amount information receiving unit that receives information regarding the stereoscopic amount of the stereoscopic image is provided, and the radiation image selecting unit selects two radiation images based on the information regarding the stereoscopic amount received by the stereoscopic amount receiving unit. It can be.

  According to the radiographic imaging display method and apparatus of the present invention, the thickness information of the subject is acquired using the radiographic image detected by the radiographic image detector by irradiating the subject from the predetermined first imaging direction. Based on the acquired thickness information, a radiographic image shooting direction range used for displaying a stereoscopic image in a second direction different from the first imaging direction is acquired, and the acquired imaging direction is acquired. Since the stereoscopic image in the second direction is displayed using the radiographic image detected by the radiographic image detector by irradiating the subject within the range, the accurate thickness of the subject can be acquired. At the same time, it is possible to display a stereoscopic image having an appropriate depth according to the thickness.

  In addition, when a stereoscopic image in a predetermined direction is displayed using the radiographic image in the first imaging direction detected to acquire the thickness information, one radiographic image is acquired for the thickness information. And the display of a stereoscopic image, the number of steps can be reduced and the exposure of the subject can be reduced.

  In addition, the subject is irradiated with radiation from at least three different directions within the range of the imaging direction, and a radiation image detected by the radiation image detector by irradiation of the subject with radiation from the at least three directions is stored in advance. Two radiographic images used for displaying a stereoscopic image in the second direction are selected from the stored radiographic images, and a stereoscopic image in the second direction is displayed using the selected two radiographic images. In such a case, by selecting two radiographic images in accordance with the stereoscopic amount desired by the photographer, a stereoscopic image having the desired stereoscopic amount can be further switched and displayed.

1 is a schematic configuration diagram of a radiographic imaging / display system using an embodiment of a radiographic imaging / display system of the present invention. The block diagram which shows the internal structure of a radiation detection part and a computer in the radiation stereo image imaging display system using one Embodiment of the radiographic imaging display system of this invention. The flowchart for demonstrating an effect | action of the radiographic image radiographing display system using one Embodiment of the radiographic radiographing display system of this invention. Explanatory drawing for demonstrating the effect | action of the radiographic image radiographing display system using one Embodiment of the radiographic radiographing display system of this invention.

  A radiographic image radiographing display system using an embodiment of the radiographic radiographing display system of the present invention will be described below with reference to the drawings. First, a schematic configuration of the entire radiological stereo image capturing / displaying system will be described. FIG. 1 is a diagram showing a schematic configuration of this radiographic stereo image photographing display system.

  As shown in FIG. 1, the radiographic stereo image radiographing display system is connected to an imaging device 1 that captures a radiographic image of a subject P, a bed 22 that is a support base for supporting the subject P, and the imaging device 1. The computer 30 controls the imaging apparatus 1 and processes a radiographic image signal obtained by imaging, and a monitor 31 connected to the computer 30.

  The imaging apparatus 1 includes a radiation source 10 that emits conical radiation, a radiation detection unit 11 that detects radiation emitted from the radiation source 10, a radiation source 10, and a radiation detection unit 11 that face each end. A C-arm 12 that holds them, a rotation drive unit 15 that rotates the C-arm 12, and an arm 20 that holds the rotation drive unit 15.

  The C arm 12 is attached to the rotation drive unit 15 so as to be able to rotate 360 ° around the rotation axis C. The arm 20 includes a movable portion 20a and is held by a base portion 21 that is movably installed with respect to the ceiling. The C-arm 12 can be moved to a wide range of positions in the photographing room by moving the base 21, and the rotation direction (rotation axis angle) can be changed by moving the movable part 20a of the arm 20. Has been.

  The radiation source 10 and the radiation detection unit 11 are disposed to face each other with the rotation axis C interposed therebetween. When performing radiation CT image capturing, the positional relationship between the rotation axis C, the radiation source 10 and the radiation detection unit 11 is as follows. In a fixed state, the C-arm 12 is rotated 360 ° by the rotation driving unit 15.

  FIG. 2 is a block diagram illustrating a schematic configuration inside the radiation detection unit 11 and the computer 30.

  As illustrated in FIG. 2, the radiation detection unit 11 generates a charge upon receiving radiation transmitted through the subject P, and outputs a radiation image signal representing a radiation image of the subject P. And a signal processing unit 11b that performs predetermined signal processing on the radiation image signal output from the image detector 11a.

  The radiological image detector 11a can repeatedly perform recording and reading of radiographic images, and a so-called direct type radiographic image detector that directly receives radiation and generates charges may be used. Alternatively, a so-called indirect radiation image detector that converts radiation once into visible light and converts the visible light into a charge signal may be used. As a radiation image signal reading method, a radiation image signal is read by turning on / off a TFT (thin film transistor) switch, or by irradiating reading light. It is desirable to use a so-called optical readout system from which a radiation image signal is read out, but the present invention is not limited to this, and other systems may be used.

  The signal processing unit 11b includes an amplifier unit including a charge amplifier that converts the charge signal read from the radiation image detector 11a into a voltage signal, and an AD conversion unit that converts the voltage signal output from the amplifier unit into a digital signal. Etc.

  The computer 30 includes a central processing unit (CPU) and a storage device such as a semiconductor memory, a hard disk, and an SSD, and by these hardware, a radiation image storage unit 30a, a radiation image selection unit 30b, and a display signal generation unit 30c. A thickness information acquisition unit 30d, an imaging range acquisition unit 30e, and an imaging control unit 30f are configured.

  The radiation image storage unit 30 a stores in advance the radiation image signal for each imaging angle detected by the radiation detection unit 11.

  The radiographic image selection unit 30b is a stereo image from among a plurality of radiographic image signals stored in advance in the radiographic image storage unit 30a based on information about the stereoscopic amount of the stereo image input by the photographer in the input unit 40 described later. Two radiation image signals used for display are read out and output to the display signal generation unit 30c. The method for selecting the two radiation image signals will be described in detail later.

  The display signal generation unit 30c generates a display control signal based on the two radiation image signals read from the radiation image storage unit 30a by the radiation image selection unit 30b, and outputs the display control signal to the monitor 31. It is.

  The thickness information acquisition unit 30d acquires information on the thickness of the subject P based on a radiographic image signal obtained by imaging the subject P from a predetermined imaging direction. The radiographic image signal imaging direction and the thickness information acquisition method for acquiring the thickness information will be described in detail later.

  The imaging range acquisition unit 30e is based on the thickness information of the subject P acquired by the thickness information acquisition unit 30d, and ranges of imaging directions (hereinafter referred to as swing angles) of two radiographic images used to display a stereo image. And the step angle in the shooting direction within the swing angle. A method for obtaining the swing angle and the step angle will be described in detail later.

  The imaging control unit 30 f controls the rotation of the C arm 12 by the rotation driving unit 15 and the irradiation timing of the radiation emitted from the radiation source 10. Then, the imaging control unit 30f in the present embodiment drives and controls the rotation driving unit 15 and the radiation source 10 based on the swing angle and the step angle acquired by the imaging range acquisition unit 30e.

  The input unit 40 receives an input of shooting conditions, an operation instruction, and the like by a photographer. In the present embodiment, a stereo image display is used as information regarding the stereoscopic amount of the stereo image displayed on the monitor 31. The input of the angle difference between the two radiographic image signals used in the above is accepted.

  The monitor 31 displays a stereo image using the two radiographic image signals output from the computer 30. As the configuration, for example, the radiographic image based on the two radiographic image signals is displayed using two screens. A configuration in which a stereo image is displayed by displaying each of them and using a half mirror or polarizing glass so that one radiation image enters the right eye of the observer and the other radiation image enters the left eye of the observer Can be adopted. Or, for example, two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and this may be configured to generate a stereo image by observing with a polarizing glass, or a parallax barrier method and a lenticular method As described above, a stereo image may be generated by displaying two radiation images on a stereoscopically viewable 3D liquid crystal.

  Next, the operation of the present radiographic stereo imaging display system will be described using the flowchart shown in FIG. 3 and FIG.

  First, as shown in FIG. 1, the subject P is laid on the bed 22, and the center of the subject P's body is set as the rotation axis C. The C arm 12 is positioned so that is positioned at a symmetrical position. The movement of the C-arm 12 is performed based on the operation of the computer 30 by the photographer.

  Then, information about the imaging target such as the head, cervical spine, stomach, lungs, abdomen, or breast is input by the photographer using the input unit 40 (S10).

  In the computer 30, a shooting condition table in which various shooting targets and shooting conditions are associated is set in advance. In this imaging condition table, for example, the target of the radiation source 10 and the type of filter, the tube voltage of the radiation source 10, the mAs value, etc. are set as the imaging conditions. In addition, the thickness of the imaging target is set. A radiographic image capturing direction (hereinafter referred to as a thickness measuring imaging direction) used for acquiring information is also set.

  When an imaging target is input from the input unit 40, the above-described imaging condition table is referred to, the conditions of the radiation source 10 and the like are acquired, and the imaging direction for thickness measurement is acquired, and these conditions are acquired. Input to the controller 30f.

  Here, in the present embodiment, two stereo images viewed from two directions orthogonal to each other are captured and displayed. Accordingly, with respect to the thickness measurement shooting direction, two thickness measurement shooting directions corresponding to the stereo image in each direction are input to the shooting control unit 30f.

  Then, when an imaging start instruction is input by the operator, the imaging control unit 30f first performs imaging of a radiographic image for acquiring the thickness information of the subject P (S12). Specifically, the imaging control unit 30f outputs a control signal to the rotation driving unit 15 based on the input imaging direction for thickness measurement, and the rotation driving unit 15 uses the C arm based on the input control signal. 12 is rotated to set the photographing direction for thickness measurement.

  In the present embodiment, a stereo image in the front direction (shooting angle 90 °) and a stereo image in the lateral direction (shooting angle 0 °) of the subject P are taken, and thickness measurement for these stereo images is performed. Assume that the shooting direction is set respectively. That is, as shown in FIG. 4, a shooting angle of 0 ° is set as the thickness direction shooting direction for stereo images in the front direction, and a shooting angle of 90 ° is set as the thickness direction shooting direction for stereo images in the lateral direction. Set. 4 is a view as seen from above the subject P in FIG.

  In this embodiment, the stereo image direction and the thickness measurement shooting direction for the stereo image are set so as to be orthogonal to each other. You may make it set to another direction. For example, it is possible to set a thickness measurement shooting direction appropriate for measuring the thickness of various shooting targets, and set a thickness measurement shooting direction according to the shooting target.

  The imaging control unit 30f first outputs a control signal corresponding to a predetermined irradiation condition to the radiation source 10 with the C arm 12 set to an imaging angle of 0 °, and emits radiation from the radiation source 10. A radiographic image for thickness measurement for stereo images in the front direction is taken. Next, with the C-arm 12 set at an imaging angle of 90 °, a control signal corresponding to a predetermined irradiation condition is output to the radiation source 10, and the radiation is emitted from the radiation source 10 for a lateral stereo image. Radiographic image for thickness measurement is taken.

  Then, the radiation image detector 11a detects and reads out the thickness measurement radiation image signal for the front direction stereo image and the thickness measurement radiation image signal for the side direction stereo image by the radiation image detector 11a. The read radiographic image signals for thickness measurement are converted into voltage signals by the amplifier unit of the signal processing unit 11b, converted into digital signals by the AD conversion unit, and then input to the radiographic image storage unit 30a. Is remembered.

  Next, as described above, the thickness measurement radiographic image signal for the front direction stereo image and the thickness measurement radiographic image signal for the side direction stereo image stored in the radiographic image storage unit 30a are thickness information. The thickness information acquisition unit 30d is input to the acquisition unit 30d, and acquires thickness information based on these thickness measurement radiographic image signals (S14). Specifically, for example, edge detection is performed to detect the contour of each radiographic image signal for thickness measurement, and thickness information of the thickest part of the subject P is acquired based on the contour.

The thickness information acquired by the thickness information acquisition unit 30d is input to the imaging range acquisition unit 30e, and the imaging range acquisition unit 30e acquires the swing angle and the step angle based on the input thickness information. (S16). Specifically, as shown in FIG. 4, the swing angle ± θ ₀ is acquired based on the thickness information for the front direction stereo image, and the swing angle ± is determined based on the thickness information for the side direction stereo image. Obtain θ ₁ . The swing angles ± θ ₀ and ± θ ₁ may be set, for example, so that the range of the swing angle becomes smaller as the thickness information is larger. The swing angles ± θ ₀ and ± θ ₁ are set so that the pop-out amount in each stereo image does not exceed a predetermined pop-out amount.

  As for the step angle, in this embodiment, both the front direction stereo image and the side direction stereo image are set to 1 °, but the present invention is not limited to this, and other angles may be used. Also, different angles may be used for the front direction stereo image and the side direction stereo image.

Then, the swing angles ± θ ₀ , ± θ ₁ and the step angle acquired by the shooting range acquisition unit 30e are output to the shooting control unit 30f, and the shooting control unit 30f inputs the swing angles ± θ ₀ , ± It outputs a control signal to the rotation driving unit 15 and the radiation source 10 based on the angle increments and theta _1, perform radiographic imaging for radiation images and the lateral direction stereo image for the front direction stereo image (S18).

Specifically, when capturing a radiographic image for a front-facing stereo image, as shown in FIG. 4, the C-arm 12 sequentially stops the range of the imaging angle θ = 90 ° ± θ ₁ every 1 °. While rotating, radiation is emitted from the radiation source 10 every 1 °.

  Then, the exposure of the cone-shaped radiation passing through the subject P to the radiation image detector 11a and the reading of the radiation image signal detected by the radiation image detector 11a are sequentially performed every 1 °.

  The read radiographic image signal as described above is converted into a voltage signal in the amplifier unit of the signal processing unit 11b, converted into a digital signal in the AD conversion unit, and then input to the radiographic image storage unit 30a. Are stored in sequence.

On the other hand, when the radiographic image for the lateral stereo image is captured, as shown in FIG. 4, the C-arm 12 rotates while sequentially stopping the range of the imaging angle θ = 0 ° ± θ ₀ every 1 °. In addition, radiation is emitted from the radiation source 10 every 1 °.

  Then, the exposure of the cone-shaped radiation passing through the subject P to the radiation image detector 11a and the reading of the radiation image signal detected by the radiation image detector 11a are sequentially performed every 1 °.

  The read radiographic image signal as described above is converted into a voltage signal in the amplifier unit of the signal processing unit 11b, converted into a digital signal in the AD conversion unit, and then input to the radiographic image storage unit 30a. Are stored in sequence.

  After capturing the radiographic image for the front direction stereo image and the radiographic image for the side direction stereo image as described above, a desired angle difference is input by the photographer at the input unit 40. Then, the angle difference input from the input unit 40 is input to the radiographic image selection unit 30b, and the radiographic image selection unit 30b generates two radiological image signals for the front-side stereo image based on the angular difference, and the side image. Two radiographic image signals for the direction stereo image are read from the radiographic image storage unit 30a. Specifically, for example, when ± 2 ° is input as an angle difference, a radiographic image signal with an imaging angle of 92 ° and a radiographic image signal with an imaging angle of 88 ° are used as two radiographic image signals for a front-facing stereo image. Are read out, and a radiographic image signal with an imaging angle of 2 ° and a radiographic image signal with an imaging angle of −2 ° are read out as two radiographic image signals for a lateral stereo image.

  Then, the two radiographic image signals for the front direction stereo image selected by the radiographic image selection unit 30b and the two radiographic image signals for the side direction stereo image are output to the display signal generation unit 30c to generate a display signal. The unit 30c generates a display control signal based on the input radiation image signal, and outputs the display control signal to the monitor 31. And the monitor 31 displays a front direction stereo image and a side direction stereo image by displaying a radiographic image based on the input display control signal, respectively. The front direction stereo image and the side direction stereo image may be displayed at the same time, or may be switched and displayed.

  In the description of the above embodiment, the front direction stereo image and the side direction stereo image are displayed. However, a stereo image in another direction may be generated and displayed. In this case, it is desirable to use a radiographic image signal for thickness measurement for a front direction stereo image or a radiographic image signal for thickness measurement for a side direction stereo image taken to acquire the thickness information of the subject P. .

For example, radiation in the front direction stereo image thickness measurement radiation image signal for, namely shooting angle theta = 0 thickness measurement radiation image signals ° and imaging angle θ = ₀ ° + θ 0 or θ = ₀ ° -θ 0 Based on the image signal, a stereo image is generated and displayed, or a radiographic image signal for thickness measurement for a lateral stereo image, that is, a radiographic image signal for thickness measurement with an imaging angle θ = 90 ° and an imaging angle. A stereo image may be generated and displayed based on the radiation image signal of θ = 90 ° + θ ₁ or θ = 90 ° −θ ₁ . Alternatively, a stereo image may be generated and displayed based on a radiographic image captured at an imaging angle other than the ranges of the swing angles ± θ ₀ and ± θ _{1 and} a radiographic image signal for thickness measurement. Thus, by using the radiographic image signal for thickness measurement, which is taken to acquire thickness information, for stereo image display, it is not necessary to acquire a radiographic image again, and the exposure dose can be reduced.

  Further, in the radiation stereo image capturing / displaying system of the above embodiment, the stereoscopic amount of the stereo image displayed on the monitor 31 may be changed as needed by the photographer. Specifically, the input unit 40 receives a change input of the angle difference ± Δθ as information regarding the three-dimensional amount, and the radiation image selection unit 30b selects two radiation image signals based on the changed angle difference ± Δθ. Based on the two selected radiographic image signals, the monitor 31 may update and display the stereo image.

  Further, in the above embodiment, the numerical value of the angle difference ± Δθ is received by the input unit 40 as the information regarding the solid amount. However, the present invention is not limited to this. You may make it receive the distance information with the container 11a, and the distance information between the monitor 31 and an observer. Specifically, for example, when the distance information between the radiation source 10 and the radiation image detector 11a is received, a table is set in advance such that the angle difference ± Δθ increases as the distance information increases. The angle difference ± Δθ may be acquired with reference to this table, and the radiation image selection unit 30b may select two radiation image signals based on the angle difference ± Δθ.

  For example, when the distance information between the monitor 31 and the observer is received, a table is set in advance so that the angle difference ± Δθ decreases as the distance information increases, and this table is referred to. Then, the angle difference ± Δθ may be acquired, and the radiation image selection unit 30b may select two radiation image signals based on the angle difference ± Δθ.

  The radiation stereo image capturing / displaying system of the above embodiment can capture the whole body of the subject P, but the present invention can also be applied to a mammography stereo image capturing / displaying system. In the mammography stereo image photographing / displaying system, photographing is performed in a state where the breast is compressed by the compression plate in order to reduce the exposure dose, and the thickness of the breast can be measured based on the position of the compression plate. . And using this measured thickness, what is called AEC control which controls the irradiation time of a radiation can be performed, and a favorable image can be acquired on optimal imaging conditions.

  Further, by comparing the thickness of the breast measured based on the position of the compression plate and the thickness of the breast obtained by taking the radiographic image of the present invention, it is determined whether or not the breast is correctly positioned. You may make it perform determination. When these thicknesses differ greatly, it indicates that the breast is not uniformly compressed by the compression plate, and can be used as an index for promoting repositioning. Therefore, when these thicknesses differ greatly, for example, a warning for prompting repositioning may be performed.

DESCRIPTION OF SYMBOLS 1 Imaging device 10 Radiation source 11 Radiation detection part 11a Radiation image detector 11b Signal processing part 12 C arm 15 Rotation drive part 30 Computer 30a Radiation image storage part 30b Radiation image selection part 30c Display signal generation part 30d Information acquisition part 30e Imaging range Acquisition unit 30f Shooting control unit 31 Monitor 40 Input unit

Claims (6)

Radiation for acquiring a radiographic image for each imaging direction detected by a radiographic image detector by irradiating a subject from different imaging directions and displaying a stereoscopic image using the acquired radiographic image for each imaging direction In the image photographing display method, thickness information of the subject is obtained using a radiation image detected by the radiation image detector by irradiating the subject from a predetermined first photographing direction,
Based on the acquired thickness information, obtain a range of the radiographic image capturing direction used for displaying a stereoscopic image in a second direction different from the first imaging direction,
A radiographic image radiographing display method for displaying a stereoscopic image in the second direction using a radiographic image detected by the radiographic image detector by irradiating the subject with radiation in the range of the radiographing direction acquired. . A radiation irradiating unit that irradiates a subject with radiation from different imaging directions, a radiation image detector that detects radiation irradiated by the radiation irradiating unit and transmitted through the subject, and the imaging detected by the radiation image detector In a radiographic imaging display system including a display device that acquires a radiographic image for each direction and displays a stereoscopic image using the acquired radiographic image for each imaging direction,
The radiation irradiating unit irradiates the subject with the radiation from a predetermined first imaging direction in order to obtain thickness information of the subject;
A thickness information acquisition unit that acquires thickness information of the subject using a radiation image detected by the radiation image detector by irradiating the subject from the first imaging direction;
Based on the thickness information acquired by the thickness information acquisition unit, the range of the radiographic image capturing direction used for displaying a stereoscopic image in a second direction different from the first imaging direction is acquired. A shooting range acquisition unit
The radiation irradiating unit applies the radiation to the subject in the imaging direction range acquired by the imaging range acquisition unit in order to acquire a radiographic image used to display the stereoscopic image in the second direction. Irradiating
The display device displays a stereoscopic image in the second direction using a radiation image detected by the radiation image detector by irradiating the subject in the range of the imaging direction. Radiographic imaging display system.   The radiographic image radiographing display system according to claim 2, wherein the first imaging direction and the second direction are orthogonal to each other.   The display device displays a stereoscopic image in a predetermined direction using a radiographic image detected by the radiographic image detector by irradiating the subject from the first imaging direction with radiation. The radiation image display system according to claim 2 or 3. The radiation irradiating unit irradiates the subject with the radiation from at least three different directions in the range of the imaging direction;
A radiation image storage unit that stores in advance a radiation image detected by the radiation image detector by irradiating the subject with radiation from at least three directions;
A radiographic image selection unit that selects two radiographic images used to display a stereoscopic image in the second direction from the radiographic images stored in the radiographic image storage unit;
5. The display device according to claim 2, wherein the display device displays a stereoscopic image in the second direction using two radiographic images selected by the radiographic image selection unit. The radiographic imaging display system described. A stereoscopic amount information receiving unit for receiving information related to the stereoscopic amount of the stereoscopic image;
6. The radiographic image capturing and displaying system according to claim 5, wherein the radiographic image selection unit selects the two radiographic images based on information about the solid amount received by the solid amount reception unit. .

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