JP2012125453A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device capable of displaying a two-dimensional display image as in the prior art as well as displaying a stereoscopic vision image and furthermore capable of carrying out stereoscopic viewing of a radiation image without causing a burden on an observer.SOLUTION: The display device includes a display part having a first display screen for displaying an image for a right eye, and a second display screen arranged adjoining the first display screen to display an image for a left eye. A first installation state in which the first and second display screens are vertically adjacent, and a second installation state in which the first and second display screens are laterally adjacent, can be switched. In the case of the first installation state, the image for the right eye and the image for the left eye are respectively displayed on the first and second display screens, and in the case of the second installation state, the two-dimensional display image is displayed on the first and second display screens. Further in the first installation state, a stereoscopic vision confirmation index is displayed on at least one of the first and second display screens.

Description

  The present invention relates to a display device that displays a stereoscopic image photographed by radiation of a subject from two different photographing 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 displayed based on a plurality of images with parallax obtained by photographing the same subject from different directions.

  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. In other words, a subject is irradiated with radiation from different imaging directions, the radiation transmitted through the subject is detected by a radiation detector, and a plurality of radiation images having parallax are obtained, and these radiation images are used. Thus, displaying a stereoscopic image is performed. By using such a stereoscopic image, it is possible to observe a radiographic image with a sense of depth, so that diagnosis can be performed more easily.

  By the way, stereoscopic vision of a radiographic image is performed by displaying the above-described plurality of radiographic images on a display device such as a three-dimensional monitor for performing stereoscopic vision. As such a display device, for example, as described in Patent Document 1, a display device using a half mirror is known.

  A display device using a half mirror described in Patent Literature 1 displays two radiographic images for stereoscopic viewing, two display units arranged so that display lights are orthogonal to each other, and one display unit A half mirror that reflects the display light from the other display unit and transmits the display light from the other display unit, and observes the display light from the two display units through the half mirror, thereby providing a stereoscopic view of the radiation image. Is what you do.

JP 2010-187916 A JP 2010-183965 A

  However, the display device described in Patent Literature 1 is suitable for displaying a stereoscopic image, but does not assume that a two-dimensional display image is displayed. For example, in radiographic image diagnosis of breasts, two breast images taken as two-dimensional display images are displayed side by side with the chest wall in the vertical direction, or two images obtained by photographing the same breast at different photographing dates and times. Conventionally, radiation images are displayed side by side on the left and right, but such a display method cannot be realized with the display device described in Patent Document 1. In addition to a monitor dedicated to displaying a stereoscopic image such as the display device described in Patent Document 1, a monitor capable of displaying radiographic images taken as a two-dimensional display image side by side may be provided. However, the cost will increase.

  On the other hand, a technique for displaying an image for position confirmation has been proposed so that an observer can observe a display device from a correct observation position and appropriately perform stereoscopic viewing (see Patent Document 2). The technique described in Patent Document 2 can provide a position confirmation image that enables stereoscopic viewing when the display device is observed from an appropriate position, and stereoscopic viewing when the display device is observed from a position other than the appropriate position. To display. Thereby, since an observer can observe a display apparatus from a proper position, it becomes possible to perform stereoscopic vision appropriately.

  However, when the technique described in Patent Document 2 is used, the observer needs to move his / her face up / down / left / right to find an appropriate position where the position confirmation image can be stereoscopically viewed through trial and error. In particular, the position confirmation image in Patent Document 2 is recognized by the observer depending on whether or not a stereoscopic view is possible. Since it is not viewed, the burden on the observer is great because the eyes become tired.

  The present invention has been made in view of the above circumstances, and can display a stereoscopic image as well as a conventional two-dimensional display image. Further, radiation can be applied without burdening an observer. An object of the present invention is to provide a display device that can perform stereoscopic viewing of an image.

  The display device of the present invention is disposed adjacent to the first display screen and the first display screen for displaying the right-eye image of the right-eye image and the left-eye image obtained by photographing the subject from different directions, and the left-eye A display device comprising: a display unit having a second display screen for displaying an image for use; and an optical system for generating a stereoscopic image by combining the two images when the right-eye image and the left-eye image are incident , A first installation state in which the first display screen and the second display screen are adjacent in the vertical direction, and a second installation state in which the first display screen and the second display screen are adjacent in the left-right direction. A rotation support mechanism that rotatably supports the display unit so that the display can be switched, and a right-eye image and a left-eye image are displayed on the first and second display screens in the first installation state, respectively. In the second installation state, the first and second A display control unit that displays a two-dimensional display image on the display screen, and when the display control unit is in the first installation state, at least one of the first display screen and the second display screen is further three-dimensional. A visual confirmation index is displayed.

  Moreover, in the display device of the present invention, an installation state detection unit that detects whether the installation state is the first installation state or the second installation state is provided, and the display control unit is a detection result of the installation state detection unit. Accordingly, the right-eye image, the left-eye image, and the two-dimensional display image can be switched.

  Further, the display control unit can display a cross mark as a stereoscopic vision confirmation index.

  In addition, a display position adjustment unit that receives adjustment of the display position of at least one of the stereoscopic vision confirmation indicators respectively displayed on the first display screen and the second display screen can be provided.

  In addition, an observer information reception unit that receives information of an observer of the stereoscopic image, a display position of the stereoscopic vision confirmation index adjusted by the display position adjustment unit, and observer information received by the observer information reception unit An index display position storage unit that stores the corresponding information, and the display control unit reads the display position of the stereoscopic vision confirmation index corresponding to the input observer information from the index display position storage unit and stereoscopically displays the display position. A confirmation indicator can be displayed.

  Moreover, the image for right eyes, the image for left eyes, and the image for two-dimensional display can be made into a radiographic image.

  Further, the radiographic image is a breast radiographic image, and the display control unit has a right eye image and a left eye image on the first and second display screens so that the breast wall of the breast is horizontal in the first installation state. And can be displayed respectively.

  Further, when the display control unit is in the second installation state, one of the left breast radiation image obtained by photographing the left breast and the right breast radiation image obtained by photographing the right breast of the same subject is displayed on the first display screen. And the other is displayed on the second display screen.

  The display control unit can display the left breast radiation image and the right breast radiation image so that the chest wall faces each other.

  Further, the optical system can be a half mirror that transmits the display light of one display screen and reflects the display light of the other display screen.

  According to the display device of the present invention, the first installation state in which the first display screen and the second display screen are adjacent in the vertical direction, and the first display screen and the second display screen in the horizontal direction. When the adjacent second installation state is switchable, and the first installation state is displayed, the right eye image and the left eye image are displayed on the first and second display screens, respectively. In some cases, since the two-dimensional display image is displayed on the first and second display screens, the conventional two-dimensional display image can be displayed together with the stereoscopic image display. .

  Further, in the first installation state, the stereoscopic vision confirmation indicator is displayed on at least one of the first display screen and the second display screen, so that a two-dimensional display image is displayed. When the viewer is switched from the second installation state to the first installation state in which a stereoscopic image is displayed, the viewer can easily stereoscopically view his / her head based on the display of the stereoscopic vision confirmation index. It becomes possible to guide to. For this reason, the observer can easily perform stereoscopic vision by observing the right-eye and left-eye radiographic images synthesized at the guided position.

  In the display device according to the present invention, whether the first installation state or the second installation state is detected, and the right-eye image, the left-eye image, and the two-dimensional display are used according to the detection result. When switching between images, it is possible to save the trouble of instructing switching of display contents.

  In addition, since stereoscopic vision is established in a human head and there are individual differences in eye intervals, the position at which stereoscopic vision is easy may vary depending on the observer.

  Therefore, when the adjustment of the display position of at least one of the stereoscopic vision confirmation indicators respectively displayed on the first display screen and the second display screen is accepted, the display position corresponding to each observer Can display a stereoscopic vision confirmation index, and more appropriate stereoscopic vision can be easily performed.

  In addition, if the display position of the adjusted stereoscopic vision confirmation index is stored for each observer, the trouble of finely adjusting the display position of the stereoscopic vision confirmation index each time can be saved.

1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a display device of the present invention. The figure which looked at the arm part from the right direction in the mammography imaging display system shown in FIG. 1 is a block diagram showing a schematic configuration inside a computer of the breast image capturing and displaying system shown in FIG. The figure which shows the installation state of the monitor which made the 1st display screen and the 2nd display screen adjoin the up-down direction Rear view of the monitor shown in FIG. Side view of the monitor shown in FIG. The figure which shows the installation state of the monitor which made the 1st display screen and the 2nd display screen adjacent in the left-right direction The figure which shows an example of the state which displayed the cross mark on the 1st display screen and the 2nd display screen The flowchart for demonstrating the effect | action of one Embodiment of the display apparatus of this invention. The figure which shows an example of the state which displayed the cross mark only on the 2nd display screen The figure which shows other embodiment of the display apparatus of this invention. The figure which shows an example of the table which matched the observer and the cross mark display position according to the observer

  Hereinafter, a breast image capturing and displaying system using an embodiment of a display device of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a schematic configuration of the entire breast image photographing display system of the present embodiment.

  As shown in FIG. 1, a breast image capturing and displaying system 1 according to the present embodiment includes a breast image capturing apparatus 10, a computer 2 connected to the breast image capturing apparatus 10, a monitor 3 connected to the computer 2, and an input unit. 4 is provided.

  The breast image capturing apparatus 10 shoots a two-dimensional display image and a stereo image by irradiating the breast M with radiation from a predetermined capturing direction, acquires a two-dimensional display image or a stereo image of the breast M, These images are output to the computer 2.

  Specifically, as shown in FIG. 1, the mammography apparatus 10 includes a base 11, a rotary shaft 12 that is movable in the vertical direction (Z direction) with respect to the base 11, and is rotatable. An arm portion 13 connected to the base 11 by a rotating shaft 12 is provided. FIG. 2 shows the arm 13 viewed from the right direction in FIG.

  The arm portion 13 has an alphabet C shape, and a radiation source unit 16 is attached to one end of the arm portion 13 so as to face the imaging table 14 at the other end. The movement of the arm unit 13 in the vertical direction is controlled by an arm controller 31 incorporated in the base 11.

  A radiographic image detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiographic image detector 15 are provided inside the imaging table 14.

  Further, inside the imaging table 14, a charge amplifier that converts the charge signal read from the radiation image detector 15 into a voltage signal, a correlated double sampling circuit that samples the voltage signal output from the charge amplifier, A circuit board provided with an AD conversion unit for converting a voltage signal into a digital signal is also installed.

  The radiation image detector 15 can repeatedly perform recording and reading of a radiation image, and may use a so-called direct type radiation image detector that directly receives radiation and generates charges. 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.

  A radiation source 17 and a radiation source controller 32 are accommodated in the radiation source unit 16. The radiation source controller 32 controls the timing of irradiating radiation from the radiation source 17 and the radiation generation conditions (tube current, time, tube voltage, etc.) in the radiation source 17.

  Further, in the central part of the arm part 13, a compression plate 18 that is arranged above the imaging table 14 and presses against the breast, a support unit 20 that supports the compression plate 18, and a support unit 20 in the vertical direction. A moving mechanism 19 for moving is provided. The position of the compression plate 18 and the compression pressure are controlled by the compression plate controller 34.

  The computer 2 includes a central processing unit (CPU), a storage device such as a semiconductor memory, a hard disk, and an SSD. The control unit 2a, the radiation image storage unit 2b, and the display as illustrated in FIG. A control unit 2c is configured.

  The control unit 2a outputs predetermined control signals to the various controllers 31 to 35 to control the entire system. A specific control method will be described in detail later.

  The radiation image storage unit 2b stores a two-dimensional display image and a stereo image of the breast M captured by the breast image capturing apparatus 10.

  The display control unit 2c performs predetermined signal processing on the radiographic image signal of the captured image read from the radiographic image storage unit 2b, and then displays a two-dimensional display image and a stereo image of the breast M on the monitor 3. It is something to be made.

  In addition, when the monitor 3 displays a stereo image, the display control unit 2c guides the position of the observer's head on two display screens described later so that the observer can perform appropriate stereoscopic vision. The stereoscopic confirmation mark is displayed. In this embodiment, a cross mark is displayed as a stereoscopic confirmation mark. However, the present invention is not limited to this, and any shape can be used as long as the viewer can specify the position of the head in the vertical and horizontal directions. For example, a rectangular mark may be displayed.

  As shown in FIG. 4, the monitor 3 includes a first display screen 42 and a second display screen 43. These two display screens 42 and 43 are adjacent to each other in the vertical direction as will be described later. It is configured to be switchable between one installation state and a second installation state adjacent in the left-right direction. When the two display screens 42 and 43 are in the first installation state adjacent in the vertical direction, the right-eye photographed image GR that mainly forms the stereo image is mainly displayed on the first display screen 42. The left-eye photographed image GL is displayed on the second display screen 43. On the other hand, when the two display screens 42 and 43 are in the second installation state adjacent in the left-right direction, the two-dimensional display image is mainly displayed on at least one of the two display screens 42 and 43. FIG. 4 is a schematic configuration diagram of the monitor 3 in which two display screens 42 and 43 are adjacent in the vertical direction.

  As a two-dimensional display image displayed when the two display screens 42 and 43 are in the second installation state adjacent to each other in the left-right direction, for example, a left breast radiation image obtained by imaging the left breast of the same patient Combination of right and left breast radiographs of the right breast, two radiographic images with different imaging dates and times for the same breast, and two imaging methods (CC imaging and MLO imaging) for the same breast There are combinations of radiographic images. Alternatively, a combination of two radiographic images of different parts of the same patient may be used. Furthermore, the right-eye image and the left-eye image captured by stereo shooting may be displayed as a combination of two-dimensional display images.

  A half mirror 45 is provided between the first display screen 42 and the second display screen 43 of the monitor 3. As shown in FIG. 3, when the first display screen 42 is tilted with respect to the second display screen 43, the half mirror 45 does not disturb the polarization of the display light on the first display screen 42. The display light of the second display screen 43 is transmitted as shown by the broken line in the figure without disturbing the polarization. Thereby, the half mirror 45 has a predetermined parallax on the half mirror 45 between the right-eye image GR displayed on the first display screen 42 and the left-eye image GL displayed on the second display screen 43. Are combined with each other to generate a stereoscopically visible stereo image of the breast M. In the present embodiment, the first display screen 42 displays the right-eye image GR, and the second display screen 43 displays the left-eye image GL.

  And the monitor 3 is comprised so that the display light of the 1st and 2nd display screens 42 and 43 can be made into the mutually orthogonally polarized light. Thus, the observer wears polarizing glasses having a right-eye polarizing lens for observing the right-eye image GR and a left-eye polarizing lens for observing the left-eye image GL, and the left-eye image GL and the right-eye image GR are The breast M can be viewed stereoscopically by observing with eyes.

  In addition, a hinge mechanism 46 is provided at a joint portion between the first display screen 42 and the second display screen. The hinge mechanism 46 is provided such that the first display screen 42 rotates with respect to the second display screen 43 in the direction of arrow A in FIG. The angle α formed by the first display screen 42 and the second display screen 43 can be changed by the hinge mechanism 46, and the first display screen 42 and the second display screen 43 are indicated by broken lines in the figure. Such a parallel posture and a posture in which the first display screen 42 is inclined with respect to the second display screen 43 can be changed.

  5 shows a rear view of the monitor 3, and FIG. 6 shows a side view of the monitor 3. As shown in FIGS. 4 to 6, the display unit including the first display screen 42 and the second display screen 43 of the monitor 3 is rotatably installed on the base 44 via a rotation support shaft 47. Has been.

  And the display part which consists of the 1st display screen 42 and the 2nd display screen 43 is freely rotatable to the arrow C direction of FIG. 5 by observer's rotation operation. By the rotation operation of the observer, the adjacent direction β of the first and second display screens 42 and 43 changes between the vertical direction as shown in FIG. 4 and the horizontal direction as shown in FIG. Here, the adjacent direction β is a direction in which the first display screen 42 and the second display screen 43 are adjacent to each other via the hinge mechanism 46 as shown in FIGS. 4 and 7.

  An angle sensor 47 a that detects the adjacent direction β is provided in the rotation support shaft 47. In the present embodiment, the angle sensor 47a is provided to detect the adjacent direction β. However, the present invention is not limited to this, and other sensors such as a gyro sensor may be used. Any configuration that can detect the angle of β may be adopted.

Then, the information related to the adjacent direction β detected by the angle sensor 47a is output to the display control unit 2c in the computer 2 described above, and the display control unit 2c performs the first and The second display screens 42 and 43 are used to switch whether the right-eye image GR and the left-eye image GL are stereoscopically displayed or the two-dimensional display image G2 is two-dimensionally displayed. That is, when the adjacent direction β is the vertical direction, the display control unit 2c
When the right-eye image GR and the left-eye image GL are stereoscopically displayed on the first and second display screens 42 and 43 and the adjacent direction β is the left-right direction, the first or second display screens 42 and 43 are displayed. The two-dimensional display image G2 is displayed in two dimensions.

  Further, when the display control unit 2c stereoscopically displays the right-eye image GR and the left-eye image GL on the first and second display screens 42 and 43 as described above, as shown in FIG. The cross mark 50 is displayed on the first and second display screens 42 and 43, respectively.

  In the present embodiment, as described above, the display contents of the first and second display screens 42 and 43 are automatically switched according to the detection result of the angle sensor 47a. There is no need to switch, and an observer inputs an instruction to switch display contents using the input unit 4 according to the rotation of the first and second display screens 42 and 43, and the display control unit 2c responds to the input. The display content may be switched.

  The input unit 4 is configured by a pointing device such as a keyboard and a mouse, for example, and accepts input of imaging conditions and an imaging start instruction in the mammography apparatus 10, and a display switching instruction in the monitor 3. And the input of information of an observer who observes a stereo image is received. The method for using the observer information will be described in detail later.

  Next, the operation of the mammography / display system of the present embodiment will be described.

  First, a case where an image for two-dimensional display of the breast M is captured by the breast image capturing device 10 of the breast image capturing and displaying system will be described with reference to FIGS. 1 and 2.

  First, the breast M is set on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18.

  Next, the photographer inputs an imaging method of the breast M and an imaging start instruction for an image for two-dimensional display of the breast M using the input unit 4, and imaging of the two-dimensional display image is started. Specifically, the control unit 2a outputs a control signal to the arm controller 31 according to the input photographing method. In this embodiment, it is assumed that CC imaging (head-to-tail direction) is input as an imaging method, but there is MLO imaging (inside / outside oblique direction) as well.

  Then, the arm controller 31 drives and controls the arm unit 13 in accordance with a control signal from the control unit 2a so that the arm unit 13 is in a substantially vertical state as indicated by a solid line in FIG.

  Then, in a state where the arm controller 31 is substantially vertical, the control unit 2a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and radiation image reading.

  In response to this control signal, radiation from the radiation source 17 irradiates the breast M with CC imaging (head-to-tail direction), and a two-dimensional display image is detected by the radiation image detector 15. A charge signal is read from the radiation image detector 15. Then, a radiographic image signal obtained by performing predetermined signal processing on the charge signal is output to the computer 2, and the computer 2 stores the input image for two-dimensional display G2 of the breast M in the radiographic image storage unit 2b.

  The CC imaging described above is performed for both the right and left breasts of the same patient, and the two-dimensional display image G2 acquired by each imaging is stored in the radiation image storage unit 2b.

  Next, a case where the breast M is captured in stereo by the breast image capturing apparatus 10 will be described. Similar to the imaging of the two-dimensional display image, the breast M is installed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18.

  Next, in the input unit 4, an instruction to start stereo photography of the breast M by the photographer is input, and stereo photography is started.

  Specifically, in response to a shooting start instruction input from the input unit 4, the control unit 2 a reads a shooting angle θ for shooting a preset stereo image and uses the read information on the shooting angle θ as the arm controller 31. Output to. In the present embodiment, the imaging angle θ is an angle formed by a straight line perpendicular to the detection surface of the radiation image detector 15 and the optical axis of the radiation emitted from the radiation source 17, as shown in FIG. That means. In this embodiment, 0 ° and 4 ° are stored in advance as information on the shooting angle θ. However, the present invention is not limited to this, and an arbitrary shooting angle can be set in the input unit 4 by the photographer. It is.

  Then, the arm controller 31 receives information on the shooting angle θ output from the control unit 2 a, and the arm controller 31 outputs a control signal corresponding to the shooting angle θ to the arm unit 13.

  The arm unit 13 rotates based on a control signal corresponding to the input shooting angle θ, and as a result, the shooting angle of the arm unit 13 is set to 0 °. Subsequently, the control unit 2a outputs a control signal to the radiation source controller 32 and the detector controller 33 so as to perform radiation irradiation and readout of the radiation image signal. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by photographing the breast from the 0 ° direction is detected by the radiation image detector 15, and a radiation image signal is read by the detector controller 33. After predetermined signal processing is performed on the radiographic image signal, the radiographic image signal is stored in the radiographic image storage unit 2b of the computer 2 as a radiographic image signal representing the right-eye image GR.

  Next, the arm controller 31 outputs a control signal based on the information of the imaging angle θ = 4 ° so that the arm unit 13 is in the direction of 4 ° with respect to the detection surface of the radiation image detector 15.

  Then, after the arm unit 13 is set to the imaging angle θ = 4 ° in accordance with the control signal output from the arm controller 31, radiation irradiation and radiation image detection are performed in the same manner as described above. The radiation image signal output from the image detector 15 is stored in the radiation image storage unit 2b of the computer 2 as a radiation image signal representing the left-eye image GL.

  Next, the operation of displaying the two-dimensional display image and the stereo image on the monitor 3 based on the radiographic image signal of the two-dimensional display image stored as described above and the radiographic image signal of the stereo image will be described. . Here, the operation of displaying a stereo image after displaying a two-dimensional display image will be described.

  First, as shown in FIG. 7, the first display screen 42 and the second display screen 43 are installed so as to be adjacent in the left-right direction, and the first display screen 42 and the second display screen 43 Are adjusted to be in a parallel state (S10).

  Then, the information in the adjacent direction β is detected by the angle sensor 47a, and the information is input to the display control unit 2c of the computer 2. When the display start instruction is input from the input unit 4 by the observer in this state, the display control is performed. In response to the display start instruction, the unit 2c reads out the radiographic image signal of the two-dimensional display image from the radiographic image signals stored in the radiographic image storage unit 2b, and outputs 2 to the monitor 3 based on the radiographic image signal. A dimension display image is displayed (S12). Specifically, in the present embodiment, the radiation image signal of the right breast and the radiation image signal of the left breast are read out by the display control unit 2c, and the first image of the monitor 3 is read based on these radiation image signals. A radiographic image of the right breast and a radiographic image of the left breast are displayed on the display screen 42 and the second display screen 43, respectively. At this time, as shown in FIG. 7, the breast wall MW of each breast is displayed in the vertical direction and facing each other. For distinguishing between the radiographic image signal of the two-dimensional display image and the radiographic image signal of the stereo image, for example, when storing them in the radiographic image storage unit 2b, identification information is added as header information, The display control unit 2c may read out the radiation image signal based on the identification information.

  Next, when the observer wants to observe a stereo image, the first and second display screens 42 and 43 are rotated around the rotation support shaft 47 by the observer, as shown in FIG. The first display screen 42 and the second display screen 43 are installed so as to be adjacent in the vertical direction (S14). Further, the first display screen 42 is adjusted so as to be inclined with respect to the second display screen 43.

  Then, the information in the adjacent direction β is detected by the angle sensor 47a, and the information is input to the display control unit 2c of the computer 2. When the display start instruction is input from the input unit 4 by the observer in this state, the display control is performed. In response to the display start instruction, the unit 2c reads out a radiographic image signal of a stereo image among the radiographic image signals stored in the radiographic image storage unit 2b, and displays a stereo image on the monitor 3 based on the radiographic image signal. (S16). Specifically, in the present embodiment, the display controller 2c reads out a radiographic image signal representing a right-eye image and a radiographic image signal representing a left-eye image, and based on these radiographic image signals, monitors 3 The right eye image GR is displayed on the first display screen 42, and the left eye image is displayed on the second display screen 43. At this time, the display control unit 2c displays the left-eye image GL and the right-eye image GR in a state where each breast M has a mirror image relationship and the chest wall MW is horizontal as shown in FIG.

  At this time, as shown in FIG. 8, the display control unit 2c further displays cross marks 50 on the first display screen 42 and the second display screen 43, respectively (S18). The display position of the cross mark 50 displayed at this time is set in advance, and the cross mark 50 on the first display screen 42 and the cross mark 50 on the second display screen are displayed at the same position in the vertical and horizontal directions. The

  The observer observes the cross mark 50 displayed on the first display screen 42 and the second display screen 43 and adjusts the position of his / her head to a position where the two cross marks 50 coincide.

  Thus, before observing the breast image as the subject, the breast image can be appropriately stereoscopically viewed by observing the cross mark 50 and guiding the head to a position where it is easy to stereoscopically view. The cross mark 50 is erased in accordance with an instruction from the input unit 4 by the observer after the observer recognizes that the cross marks match. If necessary, the cross mark 50 may be displayed again according to an instruction from the input unit 4.

  In the above embodiment, the cross mark 50 is displayed on both the first display screen 42 and the second display screen 43. For example, as shown in FIG. You may make it display only on. In this case, the position of the front of the cross mark is easy to view stereoscopically, and the head is moved to the position where the cross marks displayed on both the first display screen 42 and the second display screen 43 coincide. The position of the head can be adjusted more easily than in the case of making it.

  In the above embodiment, the two cross marks 50 are displayed at a preset display position. However, stereoscopic vision is established in the human head, and the interval between eyes varies depending on the individual. Depending on the observer, the preset display position may not necessarily be a display position appropriate for stereoscopic viewing.

  Therefore, for example, the display positions of the two cross marks 50 may be finely adjusted by input from the input unit 4. It should be noted that both the display positions of the two cross marks 50 may be adjustable, or only the display position of one of the cross marks 50 may be adjustable.

  Further, as shown in FIG. 11, a mark display position storage unit 2d is provided in the computer 2, and the display positions of the two cross marks 50 after adjustment are associated with the information of the observer who performed the adjustment. You may make it preserve | save in the display position preservation | save part 2d. About the information of an observer, what is necessary is just to make it input using the input part 4, for example. FIG. 12 is a diagram illustrating an example of a table in which each observer is associated with the display position of the cross mark corresponding to each observer. The first mark display position is the display position of the cross mark 50 after adjustment of the observer on the first display screen 42, and the second mark display position is the observer's display position on the second display screen 43. This is the display position of the cross mark 50 after adjustment.

  Then, the input unit 4 accepts the input of the current observer information, and the display control unit 2c reads the display position of the cross mark 50 corresponding to the input observer from the mark display position storage unit 2d and performs the first operation. If the cross mark 50 is displayed on each of the display screen 42 and the second display screen 43, it is possible to save the observer from finely adjusting the display position of the cross mark 50 each time.

  In the above embodiment, the display device of the present invention is applied to the mammography display system. However, the subject is not limited to the breast, but for so-called general imaging such as imaging of the chest other than the breast. You may make it apply to this radiographic imaging display system.

DESCRIPTION OF SYMBOLS 1 Mammography imaging display system 2 Computer 2a Control part 2b Radiation image memory | storage part 2c Display control part 2d Mark display position preservation | save part 3 Monitor 4 Input part 10 Mammography apparatus 13 Arm part 14 Imaging stand 15 Radiation image detector 17 Radiation source 18 Compression plate 42 First display screen 43 Second display screen 44 Base 45 Half mirror 46 Hinge mechanism 47 Rotation support shaft 47a Angle sensor 50 Cross mark

Claims (10)

A first display screen that displays a right-eye image out of a right-eye image and a left-eye image obtained by photographing subjects from different directions, and is arranged adjacent to the first display screen, and displays the left-eye image. In a display device comprising: a display unit having a second display screen; and an optical system that receives the right-eye image and the left-eye image and combines the two images to generate a stereoscopic image.
The first installation state in which the first display screen and the second display screen are adjacent in the up-down direction, and the second installation state in which the first display screen and the second display screen are adjacent in the left-right direction. A rotation support mechanism for rotatably supporting the display unit so that the installation state can be switched;
When in the first installation state, the right and left eye images are displayed on the first and second display screens, respectively, and when in the second installation state, the first and second images are displayed. A display control unit for displaying a two-dimensional display image on the second display screen,
When the display control unit is in the first installation state, a stereoscopic vision confirmation index is further displayed on at least one of the first display screen and the second display screen. Display device. An installation state detection unit for detecting whether the first installation state or the second installation state;
2. The display control unit according to claim 1, wherein the display control unit switches between the right-eye image, the left-eye image, and the two-dimensional display image according to a detection result of the installation state detection unit. Display device.   The display device according to claim 1, wherein the display control unit displays a cross mark as the stereoscopic vision confirmation index.   The display position adjustment unit for receiving adjustment of a display position of at least one of the stereoscopic vision confirmation indicators respectively displayed on the first display screen and the second display screen. The display device according to any one of 1 to 3. An observer information receiving unit for receiving information of an observer of the stereoscopic image;
An index display position storage unit that stores the stereoscopic vision confirmation index adjusted by the display position adjustment unit in association with the observer information received by the observer information reception unit;
The display control unit reads out the display position of the stereoscopic vision confirmation index corresponding to the input observer information from the index display position storage unit and displays the stereoscopic vision confirmation index at the display position. The display device according to claim 4, wherein the display device is provided.   The display device according to claim 1, wherein the right-eye image, the left-eye image, and the two-dimensional display image are radiation images. The radiographic image is a radiographic image of a breast,
When the display control unit is in the first installation state, the right-eye image and the left-eye image are displayed on the first and second display screens so that the breast wall of the breast is horizontal. The display device according to claim 6, wherein   When the display control unit is in the second installation state, one of a left breast radiation image obtained by photographing the left breast and a right breast radiation image obtained by photographing the right breast of the same subject is displayed in the first display. 8. The display device according to claim 6, wherein the display device is displayed on a screen and the other is displayed on the second display screen.   9. The display device according to claim 8, wherein the display control unit displays the left breast radiation image and the right breast radiation image so that a chest wall faces each other.   The display according to claim 1, wherein the optical system is a half mirror that transmits the display light of the one display screen and reflects the display light of the other display screen. apparatus.

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