JP5366590B2 - Radiation image display device - Google Patents

Description

  The present invention relates to a radiographic image display apparatus, and more particularly to a radiographic image display apparatus that performs stereo display of radiographic images captured by individually irradiating radiation from different directions with respect to an imaging target region of a subject.

  2. Description of the Related Art Conventionally, radiation imaging apparatuses that perform radiation imaging for the purpose of medical diagnosis are known. An example of this type of radiographic apparatus is a mammography that images a subject's breast for the purpose of early detection of breast cancer.

  By the way, since the radiographic image obtained by imaging | photography with a radiography apparatus is a two-dimensional image, it is difficult to judge three-dimensional distribution, such as a lesion.

  Therefore, a stereo imaging method has been proposed as a technique for improving diagnosis accuracy.

  For example, in Patent Document 1, a subject is exposed to X-rays from two different directions to acquire a stereo image, and information on the depth direction is obtained from the acquired stereo image to obtain three-dimensional information. A technique for performing pseudo three-dimensional display on a display unit by performing coordinate rotation processing on three orthogonal axes is described.

JP-A 64-2628

By the way, a radiographic image is an image photographed by radiation transmitted through a subject. For this reason, when two radiographed images are displayed in stereo as a right-eye image and a left-eye image, the left and right images are switched and displayed, so that the object being viewed is viewed from the front side. as also it may also be displayed on as seen from the back side.

  For this reason, in the technique described in Patent Document 1, there is no sense of incongruity even if the left and right images are switched and the observation target site is observed from the front side or the back side, and the direction is not known in the displayed image. There was a problem.

  Especially in radiographic image display devices for medical diagnosis, it is important to make a mistake in whether the back side or front side of the captured radiographic image is mistaken, which can lead to a serious mistake. . For example, in mammography, when an abnormal shadow or the like in the breast is found, it is necessary to correctly know whether the shadow is located above or below the compressed breast N. For this purpose, it is necessary to know whether the stereo image being interpreted is from the top or from the bottom. Usually, it is extremely difficult for an observer to determine whether the stereo image is observed from the front side or the back side only by observing the image.

  On the other hand, when two images taken of a normal scene are displayed in stereo as a right-eye image and a left-eye image, they are not transmitted images of the object, so the object feels unnatural when viewed from the back side, There is no mistake in viewing from the side and from the back.

  The present invention has been made to solve the above problems, and an object of the present invention is to provide a radiographic image display apparatus capable of determining a direction in a displayed image.

In order to achieve the above object, the radiological image display apparatus according to the first aspect of the present invention is an imaging target of a subject in which the radiation irradiation unit is moved without moving the imaging table and is in contact with the imaging surface of the imaging table. Acquisition means for acquiring image information indicating a plurality of radiographic images captured by individually irradiating radiation from different directions with respect to the part; display means capable of displaying an image for the right eye and an image for the left eye; Based on each image information acquired by the acquisition means, the display means can display an image including a perceptual target object that can stereoscopically view the part to be imaged and that indicates an imaging direction that is orthogonal to the imaging surface. And a control means for controlling the display to be displayed.

According to the first aspect of the present invention, the acquisition unit is configured to emit radiation from different directions with respect to the imaging target region of the subject in contact with the imaging surface of the imaging table by moving the radiation irradiation unit without moving the imaging table. Each of the image information indicating a plurality of radiographic images captured individually is acquired, the display means can display an image for the right eye and an image for the left eye, and the control means is acquired by the acquisition means Based on each image information, control is performed so that an image including a perceptual object that can be viewed stereoscopically and shows a photographing direction that is orthogonal to the photographing surface is displayed on the display means. This perceptual object includes symbols and figures, and may have a two-dimensional shape or a three-dimensional shape.

As described above, according to the first aspect of the present invention, radiation from a different direction with respect to the imaging target region of the subject in contact with the imaging surface of the imaging table by moving the radiation irradiation unit without moving the imaging table. Includes a perceptual object that is capable of stereoscopically viewing a region to be imaged based on image information indicating a plurality of radiographic images that are individually irradiated and imaged, and that indicates an imaging direction that is orthogonal to the imaging surface . Since the image is displayed, the shooting direction can be determined from the perceived object, so the direction can be determined in the displayed image.

  In the present invention, as in the invention described in claim 2, the control unit may perform control so that the perceived object is displayed on the display unit in a stereoscopic manner.

Further, according to the present invention, as in the invention described in claim 3, the perceptual object may be an arrow indicating the photographing direction.

Further, according to the present invention, as in the invention described in claim 4, the control means may perform control so that the perceptual object is displayed in a non-imaging target region in an image.

Furthermore, as in the invention described in claim 5, the present invention further includes a receiving unit that receives designation of an observation direction of the imaging target part displayed on the display unit, and the control unit includes the imaging target part. May be displayed as viewed from the observation direction received by the reception unit, and an image including a perceptual object indicating the shooting direction may be displayed on the display unit.
In addition, as in the invention described in claim 6, the present invention further includes a receiving unit that receives a change in the observation direction of the imaging target region displayed on the display unit, and the control unit includes the receiving unit. When the change is accepted by the above, by displaying the plurality of radiographic images interchanged with each other, the imaging target region can be stereoscopically viewed as seen from the changed observation direction, and the imaging direction is changed. You may control to display the image containing the perceptual object to show on the said display means.

According to the present invention, the radiation irradiation unit is moved without moving the imaging table, and radiation is individually irradiated from different directions to the subject's imaging target portion that is in contact with the imaging surface of the imaging table . Since an image including a perceptual object that can be viewed stereoscopically based on image information indicating a plurality of radiographic images and that indicates a photographing direction that is orthogonal to the photographing surface is displayed. Since the shooting direction can be discriminated from the above, the effect that the direction can be discriminated in the displayed image can be obtained.

It is a top view which shows the structure of the imaging device which concerns on embodiment. It is a perspective view which shows the structure at the time of CC imaging | photography of the imaging device which concerns on embodiment. It is a perspective view which shows the structure at the time of the MLO imaging | photography of the imaging device which concerns on embodiment. It is a block diagram which shows the structure of the radiographic imaging system which concerns on embodiment. It is a perspective view which shows the structure of the stereo display apparatus which concerns on embodiment. It is a figure which shows the case where the image of the stereo display apparatus which concerns on embodiment is viewed stereoscopically. It is a figure which shows the positional relationship of the radiation irradiation part at the time of imaging | photography which concerns on embodiment, and an imaging stand. It is a flowchart which shows the flow of a process of the process of the stereo image creation process program which concerns on embodiment. It is a figure which shows the relationship between the three-dimensional position of the site | part in the breast which concerns on embodiment, the image for right eyes, and the image for left eyes. It is the figure which showed typically an example of the display image which concerns on embodiment.

  Hereinafter, a case where the present invention is applied to a radiographic image capturing system that captures a radiographic image and performs stereo display will be described with reference to the drawings.

  First, the radiation imaging apparatus 10 that captures a radiation image will be described with reference to FIGS.

  The radiation imaging apparatus 10 according to the present embodiment is an apparatus that captures an image of the breast N of the subject W with radiation (for example, X-rays) in a standing state where the subject stands, and is referred to as mammography, for example. In the following, when the subject W faces the radiation imaging apparatus 10 at the time of imaging, the near side near the subject W is the front side of the radiation imaging apparatus 10, and the subject W faces the radiation imaging apparatus 10. The far side away from the subject W will be described as the rear side of the radiation imaging apparatus 10, and the left and right direction of the subject W when the subject W faces the radiation imaging apparatus 10 will be described as the apparatus left and right direction of the radiation imaging apparatus 10 (FIG. 1). , See arrow in FIG.

  Further, the imaging target of the radiation imaging apparatus 10 is not limited to the breast N, and may be, for example, another part of the body or an object. Further, the radiation imaging apparatus 10 may be an apparatus that captures the breast N of the subject W in a sitting position where the subject W is sitting on a chair or the like. Any device capable of photographing the breast N of W may be used.

  As shown in FIG. 1, the radiation imaging apparatus 10 includes a measurement unit 12 having a substantially C-shape (U-shape) in a side view provided on the front side of the apparatus and a base unit that supports the measurement unit 12 from the rear side of the apparatus. 14.

  As shown in FIGS. 1 and 2, the measurement unit 12 includes an imaging table 22 on which a planar imaging surface 20 that contacts the breast N of the subject W in a standing position is formed, and the breast N on the imaging surface 20. A pressing plate 26 to be pressed, and a holding unit 28 that holds the imaging table 22 and the pressing plate 26 are provided.

  The measurement unit 12 is provided with a radiation source 30 (see FIG. 4) such as a tube, and a radiation irradiation unit 24 that irradiates the imaging surface 20 with radiation for inspection from the radiation source 30 and a holding unit 28. And a support portion 29 that supports the radiation irradiation portion 24.

  The measuring unit 12 is provided with a rotating shaft 16 that is rotatably supported by the base unit 14. The rotation shaft 16 is fixed with respect to the support portion 29, and the rotation shaft 16 and the support portion 29 rotate together.

  The holding portion 28 can be switched between a state in which the rotation shaft 16 is connected and rotates integrally, and a state in which the rotation shaft 16 is separated and idles. Specifically, gears are provided on the rotating shaft 16 and the holding portion 28, respectively, and the meshing state and the non-meshing state of the gears are switched.

  Note that various mechanical elements can be used for switching between transmission and non-transmission of the rotational force of the rotating shaft 16.

  The holding unit 28 holds the imaging table 22 and the radiation irradiation unit 24 so that the imaging surface 20 and the radiation irradiation unit 24 are separated from each other by a predetermined distance, and the interval between the compression plate 26 and the imaging surface 20 is variable. The compression plate 26 is slidably held.

  The imaging surface 20 with which the breast N abuts is made of carbon, for example, from the viewpoint of radiolucency and strength. A radiation detector 42 for detecting radiation that is irradiated with radiation that has passed through the breast N and the imaging surface 20 is disposed inside the imaging table 22. The radiation detected by the radiation detector 42 is visualized and a radiation image is generated.

  The radiation imaging apparatus 10 according to the present embodiment is an apparatus that can perform at least both CC imaging (imaging in the head-to-tail direction) and MLO imaging (imaging in the internal and external oblique directions) of the breast N. 1 and 2 show the attitude of the radiation imaging apparatus 10 during CC imaging, and FIG. 3 shows the attitude of the radiation imaging apparatus 10 during MLO imaging of the imaging apparatus.

  As shown in FIG. 1, during CC imaging, the posture of the holding unit 28 is adjusted so that the imaging surface 20 faces upward, and the radiation irradiation unit 24 is positioned above the imaging surface 20. Thus, the posture of the support portion 29 is adjusted. Thereby, radiation is irradiated from the radiation irradiation unit 24 to the breast N from the head side to the foot side of the subject W in the standing position, and CC imaging (imaging in the head-tail direction) is performed.

  In addition, a chest wall surface 25 is formed on the surface of the imaging stand 22 on the front side of the apparatus so that the chest portion below the breast N of the subject W abuts during CC imaging. The chest wall surface 25 is flat.

  At the time of MLO shooting, as shown in FIG. 3, generally, the posture of the holding unit 28 is adjusted in a state where the shooting table 22 is rotated 45 ° or more and less than 90 ° compared to CC shooting, and the shooting table 22 is adjusted. The subject W is positioned so that the axilla of the subject W is applied to the side wall corner 22A on the front side of the apparatus. Thereby, the radiation is irradiated from the radiation irradiation unit 24 toward the breast N from the axial center side of the body of the subject W to the outside, and MLO imaging (imaging in the internal and external oblique directions) is performed.

  As shown in FIG. 2, in the radiographic apparatus 10, when performing stereo imaging, the rotation shaft 16 idles with respect to the holding unit 28, the imaging table 22 and the compression plate 26 do not move, and the support unit 29 rotates. As a result, only the radiation irradiation unit 24 moves in an arc shape.

  Thus, by rotating only the radiation irradiation unit 24, the radiation irradiation unit 24 can be positioned at a plurality of positions where there is parallax.

  Thereby, one of a plurality of images taken at a plurality of positions with parallax is visually recognized by the right eye, and the other is visually recognized by the left eye, thereby enabling stereoscopic viewing of the image.

  FIG. 4 is a block diagram showing a detailed configuration of the radiation image capturing system 5 according to the present embodiment.

  The radiographic imaging system 5 includes the above-described radiographic apparatus 10, an image processing apparatus 50 that performs predetermined image processing on the captured radiographic image, and a stereo display apparatus 80 that performs stereo display of the processed image. I have.

  The radiation imaging apparatus 10 includes a radiation detector 42, an operation panel 44 to which various operation information such as imaging conditions and posture information and various operation instructions are input, and an imaging apparatus control unit 46 that controls the operation of the entire apparatus. And a communication I / F unit 48 that is connected to a network 56 such as a LAN and transmits / receives various information to / from other devices connected to the network 56.

  The imaging device control unit 46 includes a nonvolatile storage unit including a CPU, a memory including a ROM and a RAM, an HDD, a flash memory, and the like, and includes a radiation irradiation unit 24, a radiation detector 42, an operation panel 44, and a communication I. / F section 48 is connected.

  The shooting conditions specified on the operation panel 44 include information such as tube voltage, tube current, and irradiation time, and the posture information includes information indicating whether the shooting posture is CC shooting or MLO shooting. Yes. It should be noted that various operation information such as the photographing conditions and posture information and various operation instructions may be obtained from other control devices.

  If the imaging orientation specified by the orientation information is CC imaging, the imaging device control unit 46 adjusts the orientation of the holding unit 28 so that the imaging surface 20 faces upward, and the radiation irradiation unit 24 moves to the imaging surface 20. On the other hand, when the posture of the support unit 29 is adjusted to be in an upper position and the photographing posture specified by the posture information is MLO photographing, the holding unit 28 is rotated in a state where the photographing stand 22 is rotated by 45 ° or more and less than 90 °. And the posture of the support unit 29 is adjusted so that the radiation irradiation unit 24 is positioned above the imaging surface 20. Then, the imaging device control unit 46 rotates the support unit 29 to move the radiation irradiating unit 24 in an arc shape so that the radiation source 30 provided in the radiation irradiating unit 24 is moved to the imaging surface 20 based on the exposure conditions. On the other hand, the radiation X is individually irradiated at different angles.

  The radiation detector 42 receives the irradiation of the radiation carrying the image information, records the image information, and outputs the recorded image information. For example, a radiation sensitive layer is disposed, and the radiation is converted into digital data. And output as an FPD (Flat Panel Detector). When the radiation is irradiated, the radiation detector 42 outputs image information indicating the irradiated radiation image to the imaging device control unit 46.

  The imaging device control unit 46 can communicate with the image processing device 50 via the communication I / F unit 48 and the network 56, and transmits / receives various information to / from the image processing device 50.

  On the other hand, the image processing apparatus 50 is configured as a server computer, and includes a display 52 that displays an operation menu, various information, and the like, and a plurality of keys, and an operation input for inputting various information and operation instructions. Part 54.

  The image processing apparatus 50 also stores and holds a CPU 60 that controls the operation of the entire apparatus, a ROM 62 that stores various programs including a control program in advance, a RAM 64 that temporarily stores various data, and various data. Connected to the radiation imaging apparatus 10 via a network 56, a display driver 68 that controls display of various information on the display 52, an operation input detection unit 70 that detects an operation state of the operation input unit 54, and the network 56. A communication I / F unit 72 that transmits and receives various kinds of information to and from the radiation imaging apparatus 10 and an image signal output unit 74 that outputs an image signal to the stereo display device 80 via the display cable 58 are provided. Yes.

  The CPU 60, ROM 62, RAM 64, HDD 66, display driver 68, operation input detection unit 70, communication I / F unit 72, and image signal output unit 74 are connected to each other via a system bus BUS. Therefore, the CPU 60 can access the ROM 62, RAM 64, and HDD 66. The CPU 60 controls the display of various information on the display 52 via the display driver 68, controls the transmission / reception of various information with the radiation imaging apparatus 10 via the communication I / F unit 72, and the image signal output unit 74. The image displayed on the stereo display device 80 can be controlled via Furthermore, the CPU 60 can grasp the user's operation state with respect to the operation input unit 54 via the operation input detection unit 70.

  FIG. 5 shows an example of the configuration of the stereo display device 80 according to the present embodiment.

  As shown in the figure, the stereo display device 80 has two display units 82 arranged one above the other, and the display unit 82 is fixed to the upper side by being inclined forward. The two display units 82 have display light polarization directions orthogonal to each other, the upper display unit 82 is a display unit 82R that displays an image for the right eye, and the lower display unit 82 displays an image for the left eye. The display unit 82L is used. A beam splitter mirror 84 that transmits display light from the display unit 82L and reflects display light from the display unit 82R is provided between the display units 82L and 82R. The beam splitter mirror 84 is adjusted and fixed so that the image displayed on the display unit 82L and the image displayed on the display unit 82R overlap when the observer views the stereo display device 80 from the front. Yes.

  As shown in FIG. 6, the observer views the stereo display device 80 by wearing polarized glasses 85 whose polarization directions are orthogonal to each other with the right lens and the left lens, so that the right eye and the left eye are displayed on the display unit 82L. And the image displayed on the display unit 82R can be viewed separately.

  Next, the operation of the radiographic image capturing system 5 according to the present embodiment will be described.

  When capturing a radiographic image, the radiographic apparatus 10 is input with imaging conditions and posture information to the operation panel 44.

  When the imaging posture specified by the posture information is CC imaging, the radiation imaging apparatus 10 adjusts the orientation of the holding unit 28 so that the imaging surface 20 faces upward as shown in FIG. When the posture of the support unit 29 is adjusted so that is positioned above the photographing surface 20, and the photographing posture specified by the posture information is MLO photographing, as shown in FIG. The posture of the holding unit 28 is adjusted to be rotated by less than 90 °, and the posture of the support unit 29 is adjusted so that the radiation irradiation unit 24 is positioned above the imaging surface 20.

  The subject W brings the breast N into contact with the imaging surface 20 of the radiation imaging apparatus 10. In the radiation imaging apparatus 10, when an operation instruction for starting compression is given to the operation panel 44 in this state, the compression plate 26 moves toward the imaging surface 20. When the compression plate 26 further abuts against the breast N and the compression force of the compression plate 26 reaches the set compression force, the movement of the compression plate 26 is stopped by the control of the imaging device control unit 46.

  The radiation imaging apparatus 10 according to the present embodiment rotates only the support portion 29 as shown in FIGS. 2 and 3 when an operation start instruction is given to the operation panel 44 in this state. As shown in FIG. 7, the radiation irradiation unit 24 is moved in an arc shape, and radiation is individually emitted from the radiation source 30 of the radiation irradiation unit 24 at a predetermined angle θ (for example, 10 °) with respect to the imaging surface 20. Irradiate. The angle θ formed may be a fixed value, or may be changed according to, for example, an imaging target site, a lesion to be observed, a thickness of the imaging target site, or the like. The radiation individually irradiated from the radiation irradiation unit 24 reaches the radiation detector 42 after passing through the breast N.

  When radiation is irradiated, the radiation detector 42 outputs image information indicating the irradiated radiation image to the imaging device controller 46, respectively. The imaging device control unit 46 associates the image information indicating the two captured radiographic images and the imaging conditions for capturing the radiographic image, and transmits them to the image processing device 50 through communication.

  The image processing apparatus 50 receives the image information, the attribute information, and the imaging conditions by the communication I / F unit 72, thereby acquiring the image information indicating the two radiographic images captured. The image processing apparatus 50 performs various types of image correction processing such as shading correction on each received image information, and obtains the two radiographic images after correction in association with attribute information, imaging conditions, and the like in one imaging. And stored in the HDD 66 as shooting information.

  The image processing device 50 can display a stereo image on the stereo display device 80. When a predetermined operation instruction to start displaying a stereo image is given to the operation input unit 54, the image processing apparatus 50 makes each part in the breast N based on two radiographic images stored as one piece of imaging information in the HDD 66. The three-dimensional information is generated. Then, the image processing device 50 performs a stereo image creation process for creating a right-eye image and a left-eye image based on the generated three-dimensional information, and displays the created right-eye image on the display unit 82R. The created left-eye image is displayed on the display unit 82L. When displaying this stereo image, the image processing apparatus 50 receives the designation of the observation direction for observing the breast N in the display space with respect to the operation input unit 54. Note that when the observation direction is determined in advance, designation of the observation direction is not necessarily accepted.

  FIG. 8 shows a flowchart showing the flow of processing of the stereo image creation processing program executed by the CPU 60 according to the present embodiment. The program is stored in advance in a predetermined area of the ROM 62.

  In step 100 in the figure, based on the three-dimensional information stored in the HDD 66, a right-eye image and a left-eye image including a perceptual object that can be stereoscopically viewed and show a reference direction in the display space are created. The reference direction may be any direction, but in the present embodiment, the shooting direction is the reference direction.

  FIG. 9 schematically shows a flow of creating a right-eye image and a left-eye image. FIG. 9 shows a case where a right-eye image and a left-eye image are created from two observation directions, respectively.

  As shown in the figure, the three-dimensional information stores the three-dimensional positions of the portions 92A, 92B, and 92C in the breast N.

  In the present embodiment, it is assumed that there is a virtual imaging surface 21 perpendicular to the observation direction, and two viewpoints with a predetermined parallax angle φ (for example, 6 °) centered on a central perpendicular on the imaging surface 21. A right-eye image and a left-eye image obtained by projecting the portions 92A, 92B, and 92C onto the imaging surface 21 from 31L and 31R are created. The right eye image and the left eye image include an arrow 94 indicating the reference direction as the perceptual object so as to be stereoscopically viewable.

  FIG. 10A shows an example of an image (for example, an image for the right eye) when the observation direction is the imaging direction, and FIG. 10B shows the observation direction opposite to the imaging direction. An example of an image in the case of

  An arrow 94 indicates the shooting direction. In the present embodiment, the arrow 94 is arranged in a region other than the breast region in the image.

  In the next step 102, the created image for the right eye is displayed on the display unit 82R, and the created image for the left eye is displayed on the display unit 82L.

  Thereby, an observer such as a doctor can perform radiogram image interpretation and diagnosis. The observer can view the inside of the breast N in a three-dimensional manner by viewing the stereo display device 80 while wearing the polarized glasses 85. Further, the observer can determine the photographing direction from the direction of the arrow 94, and when an abnormal shadow or the like in the breast N is found, whether the shadow is located above the compressed breast N or below. Can be correctly determined. In particular, in this embodiment, since the arrow 94 can also be seen three-dimensionally, it is easy to grasp the direction.

  In the next step 104, it is determined whether or not an instruction to change the observation direction is given to the operation input unit 54. If the determination is affirmative, the process proceeds to step 100, and if the determination is negative, the step is performed. 106.

  As a result, when the observation direction is changed by the observer, a stereo image from the changed observation direction is displayed on the stereo display device 80.

  In step 106, it is determined whether or not an operation instruction to end the stereo image display is given to the operation input unit 54. If the determination is affirmative, the process ends. If the determination is negative, the process proceeds to step 104. Transition.

  As described above, according to the present embodiment, the breast N can be stereoscopically viewed based on the image information indicating a plurality of radiographic images captured by individually irradiating the subject's breast N from different directions. In addition, the right-eye image and the left-eye image including the arrow 94 indicating the reference direction in the display space are created, and the created right-eye image and left-eye image are displayed on the stereo display device 80. Since the reference direction can be determined from 94, the direction can be determined in the displayed image.

  In addition, although the case where it applied to the radiographic image image | photographed by mammography was demonstrated in the said embodiment, this invention is not limited to this, You may apply to another radiographic image imaging device.

  In the above embodiment, the case where the radiation imaging apparatus 10 and the image processing apparatus 50 are provided and the stereo display apparatus 80 is connected to the image processing apparatus 50 has been described, but the present invention is not limited to this. For example, the radiation imaging apparatus 10 and the image processing apparatus 50 may be configured as one apparatus, and the stereo display device 80 may be connected to the apparatus.

  Further, in the above-described embodiment, the case where the stereo display device 80 in which the two display units 82 are arranged vertically is described. However, the present invention is not limited to this, for example, an odd line The right-eye image and the left-eye image may be separately displayed on the odd-numbered line and the even-numbered line of one display unit in which the polarization directions of the display light are orthogonal to each other. Alternatively, the colors displayed for the right-eye image and the left-eye image may be changed, and stereoscopic viewing may be performed using glasses that transmit different colors with the right lens and the left lens.

  In the above embodiment, the case where two radiographic images are taken at a predetermined angle θ has been described. However, the present invention is not limited to this, and two or more radiographic images are taken at different angles. Then, three-dimensional information may be generated from two or more radiation images.

Moreover, although the said embodiment demonstrated the case where 3D information was produced | generated based on two radiographic images, and a stereo image was produced based on 3D information, this invention is not limited to this. Two radiation images may be displayed as they are or after being subjected to image processing such as enlargement or reduction. In this case, the specifiable observation direction is the direction opposite to the shooting direction and the shooting direction. In this case, there is no need to create an image of the image and the left eye of the product and for the right eye of the three-dimensional information, synthesizes the arrow 94 indicates the reference direction to the two radiographic images captured to be stereoscopically Image processing may be performed.

  In the above-described embodiment, the case where digital image information indicating a radiation image is directly obtained by the radiation detector 42 has been described. However, the present invention is not limited to this, and for example, an imaging plate or an X-ray film For example, digital image information may be obtained by irradiating a cassette or the like with a built-in component, etc., and reading an imaging plate or an X-ray film incorporated in the cassette.

  In addition, the configurations (see FIGS. 1 to 6) of the radiographic imaging system 5, the radiographic imaging device 10, the radiation source 30, the image processing device 50, and the stereo display device 80 described in the above embodiment are merely examples. Needless to say, the present invention can be changed according to the situation without departing from the gist of the present invention.

  The processing flow of the stereo image creation processing program described in the above embodiment (see FIG. 8) is also an example, and can be changed according to the situation without departing from the gist of the present invention. Needless to say.

50 Image Processing Device 54 Operation Input Unit (Reception Unit)
60 CPU (control means)
72 Communication I / F part (Acquisition means)
80 Stereo display device (display means)
94 Arrow N Breast (part to be imaged)

Claims (6)

A plurality of radiographic images obtained by individually irradiating radiation from different directions with respect to an imaging target region of a subject that is in contact with the imaging surface of the imaging table by moving the radiation irradiation unit without moving the imaging table. Acquisition means for acquiring the image information shown;
Display means capable of displaying an image for the right eye and an image for the left eye;
Based on each image information acquired by the acquisition means, the display means can display an image including a perceptual target object that can stereoscopically view the part to be imaged and that indicates an imaging direction that is orthogonal to the imaging surface. Control means for controlling to display on
A radiographic image display device comprising: The radiographic image display device according to claim 1, wherein the control unit performs control so that the perceptual object is displayed on the display unit in a stereoscopic manner. The radiographic image display device according to claim 1, wherein the perceptual object is an arrow indicating the imaging direction. The radiographic image display device according to any one of claims 1 to 3, wherein the control unit controls the perceptual object to be displayed in a non-imaging target region in an image. Receiving means for accepting designation of the observation direction of the imaging target region displayed on the display means;
The control unit displays the imaging target region as viewed from the observation direction received by the reception unit and controls the display unit to display an image including a perceptual object indicating the imaging direction. The radiographic image display apparatus of any one of Claims 1-4. A receiving unit that receives a change in the observation direction of the imaging target region displayed on the display unit;
When the change is accepted by the accepting unit, the control unit displays the plurality of radiographic images interchangeably to display the imaging target region as viewed from the changed observation direction. possible and the radiographic image display apparatus according to any one of claims 1 to 4 for controlling to display an image including a perceptual object indicating the shooting direction on the display means.