WO2012056723A1

WO2012056723A1 - 3d image display device and 3d image display method

Info

Publication number: WO2012056723A1
Application number: PCT/JP2011/006070
Authority: WO
Inventors: 俊孝阿賀野; 孝夫桑原; 靖子八尋; 大田　恭義; 玲長谷川
Original assignee: 富士フイルム株式会社
Priority date: 2010-10-29
Filing date: 2011-10-28
Publication date: 2012-05-03

Abstract

[Problem] To make it possible to move a 3D cursor, with high precision, to the position of a candidate anomalous shadow to which a viewer intends to move said cursor. [Solution] A candidate anomalous shadow is detected from each of per-imaging-direction radiological images, the position of the detected candidate anomalous shadow is displayed on a display unit together with a 3D image, a 3D cursor is moved on the basis of a 3D-cursor movement instruction inputted via an input unit, and if the position of the 3D cursor falls within a predetermined range of the position of the candidate anomalous shadow when the position of the candidate anomalous shadow is displayed on the display unit, the 3D cursor is moved to the position of the candidate anomalous shadow.

Description

Stereoscopic image display device and stereoscopic image display method

The present invention relates to a stereoscopic image display device that detects a radiographic image for each imaging direction by irradiating a subject with radiation from two different imaging directions, and displays a stereoscopic image using the two detected radiographic images. The present invention relates to a stereoscopic image display method.

Conventionally, it is known that stereoscopic viewing can be performed using parallax by displaying a combination of a plurality of images. Such a stereoscopically viewable image (hereinafter referred to as a stereoscopic image or a stereo image) is generated based on a plurality of images with parallax obtained by photographing the same subject from different directions. Such stereoscopic image generation is used not only in the fields of digital cameras and televisions but also in the field of radiographic imaging. That is, the patient is irradiated with radiation from different directions, the radiation transmitted through the subject is detected by a radiation image detector, and a plurality of radiation images having parallax are obtained, and these radiations are acquired. A stereoscopic image is generated based on the image. By generating a stereoscopic image in this way, the observer can observe a radiological image with a sense of depth, which is more suitable for diagnosis. A radiographic image can be observed.

In the stereoscopic image display apparatus that displays the stereoscopic image as described above, the density distribution feature and the morphological feature of the abnormal shadow are calculated using computer processing, as in the device that displays the two-dimensional radiation image. Detection of abnormal shadow candidates in a radiographic image using computer aided diagnosis (CAD) that automatically detects abnormal shadow candidates based on the detection, and indicating the position of the detected abnormal shadow candidate The result is displayed on the display unit so as to be stereoscopically viewable.
In the interpretation of medical images, abnormal shadows included in images can be accurately diagnosed by comparing the transition of abnormal shadow candidates using images acquired in the past for the same patient, etc. When an abnormal shadow candidate is designated on the current image, a partial image corresponding to the region of the abnormal shadow candidate is extracted, and a difference image from the current image of the corresponding region in the past image of the same patient is extracted. A method has been proposed in which diagnosis is efficiently performed by displaying two extracted images side by side (Patent Document 1).

JP 2004-329742 A Japanese Patent Laid-Open No. 6-301863 JP-A-5-507568 JP-A-11-185058

However, in the stereoscopic image display device, particularly in a fluoroscopic image such as a radiographic image, a stereoscopic cursor for designating an abnormal shadow candidate is displayed in a subject image overlapping in the depth direction. It is extremely difficult to recognize and recognize the position of the stereoscopic cursor in the depth direction, and it is difficult for the observer to accurately match the position of the abnormal shadow candidate intended for the stereoscopic cursor.

Patent Documents

2 and 3 disclose a method of automatically moving a cursor on a graphic or a selected coordinate closest to the cursor in a two-dimensional CAD used in architectural design or mechanical design. In Patent Document 4, in order to select an object hidden inside a complex object accurately, a sub-window is displayed near the cursor to display all the hidden objects. A method for enabling is disclosed.

However, the methods disclosed in the above Patent Documents 2 to 4 are for CAD for designing to move a figure or the like, and the Patent Documents 2 to 4 disclose nothing about CAD for medical diagnosis. Absent. In addition,

Patent Documents

2 and 3 do not disclose anything related to stereoscopic images.

The present invention has been made in view of the above circumstances, and provides a stereoscopic image display device and a stereoscopic image display method capable of accurately moving a stereoscopic cursor to a position of an abnormal shadow candidate intended by an observer. It is intended.

The stereoscopic image display device of the present invention includes a display unit that displays a stereoscopic image that can be stereoscopically viewed using a radiographic image for each imaging direction acquired by irradiating a subject with radiation from different imaging directions;
A stereoscopic cursor display control unit that causes the display unit to display a stereoscopic cursor that can move in the depth direction and the in-plane direction of the stereoscopic image displayed on the display unit;
An abnormal shadow candidate detecting unit for detecting an abnormal shadow candidate from each of the radiographic images for each imaging direction;
An abnormal shadow candidate display control unit that causes the display unit to display the position of the abnormal shadow candidate detected by the abnormal shadow candidate detection unit together with the stereoscopic image;
An input unit for inputting an instruction to move the three-dimensional cursor;
The stereoscopic cursor is moved based on the movement instruction of the stereoscopic cursor input by the input unit, and when the position of the abnormal shadow candidate is displayed on the display unit, the stereoscopic cursor becomes the abnormal shadow candidate. A stereoscopic cursor position control unit that moves the stereoscopic cursor to the position of the abnormal shadow candidate when positioned within a predetermined range from the position.

In the stereoscopic image display device of the present invention, when a plurality of abnormal shadow candidates are detected by the abnormal shadow candidate detection unit,
It is preferable that the three-dimensional cursor position control unit moves the three-dimensional cursor to the position of the abnormal shadow candidate closest to the current position of the three-dimensional cursor.

In the stereoscopic image display apparatus of the present invention, the abnormal shadow candidate display control unit changes the display mode of the position of the abnormal shadow candidate second closest to the current position of the stereoscopic cursor to the display unit. It may be displayed.

Also, the stereoscopic image display device of the present invention, the display mode may be blinking.

The stereoscopic image display method of the present invention includes a display unit that displays a stereoscopic image that can be stereoscopically viewed using a radiation image for each of the imaging directions acquired by irradiating the subject with radiation from different imaging directions;
A stereoscopic cursor display control unit that causes the display unit to display a stereoscopic cursor that can move in the depth direction and the in-plane direction of the stereoscopic image displayed on the display unit;
In a stereoscopic image display method in a stereoscopic image display device comprising an input unit for inputting an instruction to move the stereoscopic cursor,
Detecting abnormal shadow candidates from each of the radiographic images for each imaging direction;
Displaying the position of the detected abnormal shadow candidate together with the stereoscopic image on the display unit;
The solid cursor is moved based on the movement instruction of the solid cursor input by the input unit, and the position of the abnormal shadow candidate is displayed on the display unit. The solid cursor is moved to the position of the abnormal shadow candidate when it is located within a predetermined range from the position.

In the stereoscopic image display method of the present invention, when a plurality of the abnormal shadow candidates are detected,
It is preferable that the solid cursor is moved to the position of the abnormal shadow candidate closest to the current position of the solid cursor.

In the stereoscopic image display method of the present invention, the display mode of the position of the abnormal shadow candidate that is second closest to the current position of the stereoscopic cursor may be changed and displayed on the display unit.

Further, in the stereoscopic image display method of the present invention, the display mode may blink.

According to the first stereoscopic image display apparatus and the stereoscopic image display method of the present invention, an abnormal shadow candidate is detected from each of the radiographic images for each photographing direction, and the position of the detected abnormal shadow candidate together with the stereoscopic image The 3D cursor is moved based on the input movement instruction of the 3D cursor displayed on the display unit, and when the position of the abnormal shadow candidate is displayed on the display unit, the 3D cursor is determined in advance from the position of the abnormal shadow candidate. Since the stereoscopic cursor is moved to the position of the abnormal shadow candidate when it is located within the predetermined range, the observer intends even if it is difficult for the observer to recognize the depth direction position of the stereoscopic cursor. The stereoscopic cursor can be accurately moved to the position of the abnormal shadow candidate intended by the observer simply by moving the stereoscopic cursor to the vicinity of the abnormal shadow candidate.

1 is a schematic configuration diagram of a breast image photographing display system using an embodiment of a stereoscopic image display device of the present invention. The figure which looked at the arm part of the mammography display system shown in FIG. 1 from the right direction of 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 flowchart for demonstrating an effect | action of the breast image radiographing display system shown in FIG. And right-eye radiation image and the abnormal shadow candidate A1 in the left eye radiographic image, A2, and the right-eye marker image M1 and a left eye marker image M2, an example of the right-eye stereoscopic cursor image C _R and the left-eye stereoscopic cursor image C _L Schematic illustration The figure which shows typically an example of the stereo image of the breast containing an abnormal shadow candidate, a marker image, and a solid cursor Abnormal shadow candidates A1 and A2 in the right-eye radiation image and the left-eye radiation image, the right-eye marker image M1 and the left-eye marker image M2, the right-eye stereoscopic cursor image _CR and the left-eye stereoscopic cursor image _CL Figure schematically showing an example The figure which shows typically an example of the stereo image and marker image of a breast including an abnormal shadow candidate, and the moved solid cursor The figure which shows typically another example of the stereo image and marker image of a breast containing an abnormal shadow candidate The figure which shows typically another example of the stereo image and marker image of a breast containing an abnormal shadow candidate

Hereinafter, a breast image photographing display system using an embodiment of a stereoscopic image display apparatus 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 radiographing display system 1 according to this embodiment includes a mammography apparatus 10, a computer 2 connected to the mammography apparatus 10, a monitor 3 connected to the computer 2, and an input unit. 4 is provided.

As shown in FIG. 1, the mammography apparatus 10 includes a base 11, a rotary shaft 12 that can move in the vertical direction (Z direction) with respect to the base 11, and can rotate. The arm part 13 connected with the base 11 is provided. FIG. 2 shows the arm 13 viewed from the right direction in FIG.

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

In the imaging table 14, a radiation image detector 15 such as a flat panel detector, and a detector controller 33 for controlling reading of a charge signal from the radiation image detector 15 are provided.

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.

In addition, the photographing table 14 is configured to be rotatable with respect to the arm unit 13, and even when the arm unit 13 rotates with respect to the base 11, the direction of the photographing table 14 is fixed to the base 11. can do.

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 readout method, a radiation image signal is read out by turning on and off a TFT (thin film transistor) switch, or a radiation image is emitted by irradiating reading light. It is desirable to use a so-called optical readout system in which a 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 irradiation unit 16. The radiation source controller 32 controls the timing of radiation from the radiation source 17 and the radiation generation conditions (tube voltage, tube current time product, etc.) in the radiation source 17.

Further, in the central portion of the arm portion 13, a compression plate 18 disposed above the imaging table 14 to press and compress the breast, a support portion 20 that supports the compression plate 18, and a support portion 20 in the vertical direction ( A moving mechanism 19 for moving in the Z direction) 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) and a storage device such as a semiconductor memory, a hard disk, and an SSD, and the control unit 8a, the radiation image storage unit 8b, and the abnormality shown in FIG. A shadow candidate detection unit 8c, a marker image generation unit 8d, a stereoscopic cursor movement control unit 8f, a stereoscopic cursor display control unit 8g, and a display control unit 8h are configured.

FIG. 3 is a block diagram showing a schematic configuration inside the computer of the breast image radiographing display system shown in FIG. 1, FIG. 4 is a flowchart for explaining the operation of the breast image radiographing display system shown in FIG. 3, and FIG. , the abnormal shadow A1, A2 in the right-eye radiographic image and the left eye radiographic image, and the right-eye marker image M1 and a left eye marker image M2, an example of the right-eye stereoscopic cursor image C _R and the left-eye stereoscopic cursor image C _L FIG. 6 is a diagram schematically showing an example of a breast stereo image including an abnormal shadow, a marker image, and a three-dimensional cursor.

The control unit 8a 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 8b stores in advance two radiation image signals detected by the radiation image detector 15 by photographing from two different photographing directions.

The abnormal shadow candidate detection unit 8c receives two radiation image signals stored in the radiation image storage unit 8b, and detects an abnormal shadow candidate for detecting abnormal shadow candidates for the two radiation image signals. Is to be applied. In the present embodiment, an area having a possibility of calcification or a mass is detected as an abnormal shadow candidate. The detection method of the abnormal shadow candidate may be detected based on the density distribution characteristics and morphological characteristics of the abnormal shadow. Specifically, the iris filter processing suitable mainly for detecting the tumor shadow is used. Alternatively, abnormal shadow candidates may be detected mainly by using a morphology filter process suitable for detecting microcalcification shadows. The detection result of the abnormal shadow candidate in the abnormal shadow candidate detection unit 8c is output to the marker image generation unit 8d.

Based on the detection result output from the abnormal shadow candidate detection unit 8c, the marker image generation unit 8d detects the abnormal shadow candidates A1 and A2 detected in the right-eye radiographic image and the left-eye radiographic image, respectively, as shown in FIG. The right eye marker image M1 and the left eye marker image M2 are generated so as to surround the abnormal shadow candidates A1 and A2. Note that the abnormal shadow candidate A1 and the abnormal shadow candidate A2 shown in FIG. 5 represent the same abnormal shadow candidate. These marker images M1 and M2 constitute a stereoscopic marker image M3 that can be viewed stereoscopically by an observer as shown in FIG.

Specifically, for example, a right eye marker image and a left eye marker image are generated so that a box-shaped object such as a cube or a rectangular parallelepiped, a wire frame, a balloon, or the like is displayed as a stereoscopic marker image. In the present embodiment, the right-eye marker image M1 and the left-eye marker image M2 have a cubic shape surrounding the abnormal shadow candidates A1 and A2. Therefore, the stereoscopic marker image M3 is a cube surrounding the abnormal shadow candidate A3 as shown in FIG. It becomes. The abnormal shadow candidate A3 shown in FIG. 6 represents the same abnormal shadow candidate as the abnormal shadow candidates A1 and A2 shown in FIG.

The right-eye marker image M1 and the left-eye marker image M2 generated by the marker image generation unit 8d are output to the display control unit 8h. The observer of the monitor 3 can confirm the position of the abnormal shadow candidate by viewing the stereoscopic marker image M3. In this embodiment, the position of the abnormal shadow candidate is displayed as a stereoscopic marker image that surrounds the abnormal shadow candidate and is stereoscopically displayed by being displayed on the monitor 3, but the present invention is not limited to this. If the position including the depth direction of the abnormal shadow candidate can be displayed, for example, a box-shaped object such as a cube or a rectangular parallelepiped, a wire frame, a balloon, or the like as the stereoscopic marker image may be displayed at the center of the abnormal shadow candidate area. It may be displayed.

The three-dimensional cursor movement control unit 8f can move the three-dimensional cursor displayed on the monitor 3 in the depth direction and the in-plane direction of the stereo image in response to an input from the input unit 4 by the observer. Here, the in-plane direction means an in-plane direction orthogonal to the depth direction. When the depth direction is the Z direction, it means the direction in the XY plane orthogonal to the Z direction.

Specifically, the three-dimensional cursor movement control unit 8f changes the right and left shift amounts of the right-eye cursor image signal and the left-eye cursor image signal in accordance with the input from the input unit 4, thereby moving the three-dimensional cursor. Move in the depth direction. Further, the three-dimensional cursor movement control unit 8f maintains the relative left and right shift amounts of the right-eye cursor image signal and the left-eye cursor image signal in accordance with the input from the input unit 4, and sets these display positions. The stereoscopic cursor is moved in the in-plane direction by changing in the horizontal direction and the vertical direction.

Then, the stereoscopic cursor movement control unit 8f of the present embodiment is configured such that when the position of the abnormal shadow candidate, that is, the stereoscopic marker image M3 is displayed on the monitor 3, the stereoscopic cursor that has moved based on the movement instruction from the input unit 4 is displayed. The stereoscopic cursor is moved onto the position of the abnormal shadow candidate, that is, the stereoscopic marker image M3 when the position is within a predetermined range from the position of the abnormal shadow candidate, that is, the stereoscopic marker image M3.

Stereoscopic cursor display control unit 8g generates a right-eye cursor image signals C _R and the left eye cursor image signal C _L which constitute the three-dimensional cursor as shown in FIG. 5, respectively these example, two monitors monitor 3 By displaying, a stereoscopic cursor C that can be viewed stereoscopically is displayed as shown in FIG. These are the right-eye cursor image signals C _R and the left eye cursor image signal C _L is generated so as to have a relative shift amount in the horizontal direction. Stereoscopic cursor C in the present embodiment to those being constituted by a cube, as shown in FIG. 6, the right-eye cursor image signals C _R and the left eye cursor image signal C _L which constitute the three-dimensional cursor C is shown in FIG. 5 Thus, the cube shape is used.

The display control unit 8h performs a predetermined process on the two radiographic image signals read from the radiographic image storage unit 8b, and then displays a normal radiographic stereo image of the breast M on the monitor 3. . Further, after performing predetermined processing on the image signals of the right eye marker image M1 and the left eye marker image M2 generated in the marker image generation unit 8d together with the two radiation image signals, the monitor 3 has a stereo of the breast M. It also functions as a marker image display control unit that displays the stereoscopic marker image M3 together with the image, that is, an abnormal shadow candidate display control unit.

The input unit 4 accepts input of photographing conditions and observation conditions by the observer, input of operation instructions, and the like, and is configured by an input device such as a keyboard and a mouse, for example. In the present embodiment, a general wheel mouse having a rotating wheel is used as the one that moves the position of the three-dimensional cursor C in the depth direction. The position of the three-dimensional cursor C in the depth direction can be changed by rotating the rotating wheel by the observer.

The monitor 3 is configured to be able to display a stereo image using two radiation image signals output from the computer 2 at the time of photographing a stereo image. As a configuration for displaying a stereo image, for example, a radiographic image based on two radiographic image signals is displayed using two screens, and one of the radiographic images is observed by using a half mirror or a polarizing glass. It is possible to adopt a configuration in which a stereo image is displayed by being incident on the right eye of the observer and the other radiation image is incident on the left eye of the observer. 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 breast image radiographing display system of this embodiment will be described with reference to the flowchart shown in FIG. FIG. 7 shows abnormal shadow candidates A1 and A2 in the right-eye radiographic image and the left-eye radiographic image, the right-eye marker image M1 and the left-eye marker image M2, the right-eye stereoscopic cursor image _CR and the left-eye stereo after movement. shows schematically an example of the cursor image C _L, diagram of an example schematically showing a three-dimensional cursor after the movement stereo image and the marker image of the breast including the abnormal shadow candidate in FIG. 8, the abnormal shadow candidate in FIG. 9 FIG. 10 schematically shows another example of a breast stereo image including a marker and a marker image, and FIG. 10 schematically shows still another example of a breast stereo image and a marker image including an abnormal shadow candidate.

As shown in FIG. 4, first, the patient's breast M is placed on the imaging table 14, and the breast M is compressed with a predetermined pressure by the compression plate 18 (S10).

Next, in the input unit 4, after various photographing conditions are inputted by the photographer, an instruction to start photographing is inputted (S11).

Then, when there is an instruction to start imaging at the input unit 4, the first radiographic image of the two radiographic images constituting the stereo image of the breast M is captured (S12).

Specifically, first, the control unit 8 a reads a convergence angle θ for photographing a preset stereo image, and outputs the read information on the convergence angle θ to the arm controller 31. In this embodiment, θ = ± 2 ° is stored in advance as information on the convergence angle θ at this time. However, the present invention is not limited to this, and an arbitrary convergence angle is set by the photographer in the input unit 4. It can be set.

Then, the arm controller 31 receives the information on the convergence angle θ output from the control unit 8a. The arm controller 31 captures the image of the arm unit 13 based on the information on the convergence angle θ as shown in FIG. A control signal is output so as to rotate + θ ° with respect to a direction perpendicular to the table 14. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated + 2 ° with respect to a direction perpendicular to the imaging table 14.

Then, in a state where the arm unit 13 is rotated by + 2 ° in accordance with the control signal output from the arm controller 31, the control unit 8a applies radiation to the radiation source controller 32 and the detector controller 33 and the radiation. A control signal is output so as to read out the 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 + 2 ° 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 8 b of the computer 2.

Next, the second radiographic image of the two radiographic images constituting the stereo image of the breast M is taken (S13). Specifically, the arm controller 31 outputs a control signal so as to rotate the arm unit 13 by −θ ° with respect to a direction perpendicular to the imaging table 14 as shown in FIG. That is, in the present embodiment, a control signal is output so that the arm unit 13 is rotated by −2 ° with respect to a direction perpendicular to the imaging table 14.

Then, in a state where the arm unit 13 is rotated by −2 ° according to the control signal output from the arm controller 31, the control unit 8 a applies radiation to the radiation source controller 32 and the detector controller 33, and the radiation. A control signal is output so as to read out the image signal. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by imaging the breast from the −2 ° 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, it is stored in the radiation image storage unit 8b of the computer 2.

Next, the two radiographic image signals stored in the radiographic image storage unit 8b as described above are input to the abnormal shadow candidate detection unit 8c, and an abnormal shadow candidate detection process is performed in the abnormal shadow candidate detection unit 8c. Then, an abnormal shadow candidate in the radiographic image signal is detected (S14), and the position information of the detected abnormal shadow candidate is input to the marker image generation unit 8d.

Then, the marker image generation unit 8d, based on the position information of the abnormal shadow candidate output from the abnormal shadow candidate detection unit 8c, the right-eye marker image M1 surrounding the abnormal shadow candidates A1 and A2 as shown in FIG. And a left-eye marker image M2 are generated (S15).

Then, the image signals of the two radiation images stored in the radiation image storage unit 8b, the image signals of the right eye marker image M1 and the left eye marker image M2 generated by the marker image generation unit 8d, and the stereoscopic cursor display control unit image signal of the right-eye cursor image C _R and the left eye cursor image C _L are input to the display control unit 8f that is previously generated by 8 g, after predetermined processing is performed on these signals, the monitor 3 The monitor 3 displays a breast stereo image, a stereoscopic marker image M3, and a stereoscopic cursor C as shown in FIG. 6 (S16). Note that the display position of the three-dimensional cursor C here is determined according to the input from the input unit 4 by the observer.

Next, the three-dimensional cursor movement control unit 8f determines whether or not there is an input of an instruction to move the three-dimensional cursor C from the input unit 4 (S17). If there is an input of a movement instruction (S17; YES), Based on the input of the movement instruction, the three-dimensional cursor C is moved as described above, and the three-dimensional cursor display control unit 8g displays the moved three-dimensional cursor C on the monitor 3 (S18).

On the other hand, when there is no input of the movement instruction of the three-dimensional cursor in S17 (S17; NO), the processes after step S17 are repeatedly performed until the movement instruction is input.
As shown in FIG. 6, particularly in a fluoroscopic image such as a radiographic image, a stereoscopic cursor C for designating an abnormal shadow candidate A3 is displayed in a subject image overlapping in the depth direction. It is extremely difficult to recognize and recognize the position of the stereoscopic cursor C in the depth direction, and the observer can accurately match the position of the abnormal shadow candidate intended by the stereoscopic cursor C by the input unit 4, that is, the stereoscopic marker image M3. It is difficult.
Therefore, in the present embodiment, the stereoscopic cursor C that the stereoscopic cursor movement control unit 8f next moves based on the movement instruction from the input unit 4 is determined in advance from the position of the abnormal shadow candidate, that is, the stereoscopic marker image M3. It is determined whether or not it is located within a predetermined range (S19). Note that the predetermined range can be set in advance by the observer using the input unit 4, but in the present embodiment, the predetermined range is set within the region of the stereoscopic marker image M <b> 3.

If it is determined that the stereoscopic cursor C is located within the predetermined range from the abnormal shadow candidate (S19; YES), the stereoscopic cursor movement control unit 8f displays the stereoscopic cursor C as the abnormal shadow candidate as shown in FIG. The stereoscopic cursor C is moved to the position of the stereoscopic marker image M3 (S20). Specifically, the stereoscopic cursor movement control unit 8f outputs a signal for moving the stereoscopic cursor C to the stereoscopic cursor display control unit 8g, and the stereoscopic cursor display control unit 8g configures the stereoscopic cursor C as shown in FIG. eye cursor image C _R and the left eye cursor image C _L which is, respectively to generate an image signal so as to be positioned in the region of the abnormal shadow candidate A1, position or the right-eye marker image M1 of A2 and left marker image M2 .

Next, the display control unit 8h includes two radiographic image signals stored in the radiographic image storage unit 8b and image signals of the right eye marker image M1 and the left eye marker image M2 generated by the marker image generation unit 8d. and then output to the monitor 3 performs predetermined processing on the image signals of the three-dimensional cursor display control unit for the right eye cursor image after the movement of the three-dimensional cursor C generated by 8 g C _R and the left eye cursor image C _L, monitor 3, the breast stereo image, the stereoscopic marker image M3, and the stereoscopic cursor C after the movement are displayed as shown in FIG. 8 (S21).

If it is determined that the current position of the stereoscopic cursor C is not within the predetermined range from the abnormal shadow candidate (S19; NO), the current position of the stereoscopic cursor C is abnormally shaded by the stereoscopic cursor movement control unit 8f. The processes in and after step S17 are repeated until it is determined that the candidate is located within the predetermined range.

A plurality of abnormal shadow candidates are detected by the abnormal shadow candidate detecting unit 8c, and the positions of the plurality of abnormal shadow candidates A10, A11, A12, A13, that is, stereoscopic marker images M10, M11, M12 are displayed on the monitor 3 as shown in FIG. , M13 is displayed, the stereoscopic cursor C is moved onto the position of the abnormal shadow candidate A11 closest to the current stereoscopic cursor C position, that is, on the stereoscopic marker image M11. At this time, as shown in FIG. 10, the display mode of the abnormal shadow candidate A10 that is the second closest to the current stereoscopic cursor position, that is, the stereoscopic marker image M3, may be changed, for example, by blinking or by displaying it with a dotted line. . Thereby, the observer can confirm the position of the abnormal shadow candidate next to the stereoscopic cursor C moved by himself / herself, that is, near the stereoscopic marker image.

As described above, according to the breast image capturing / displaying system and the breast image capturing / displaying method in the breast image displaying system of the present embodiment, abnormal shadow candidates are detected from each of the radiographic images for each imaging direction, and the detected abnormal shadow candidates are detected. The position, that is, the stereoscopic marker image is displayed on the monitor 8 together with the stereoscopic image, and the stereoscopic cursor C is moved based on the input movement instruction of the stereoscopic cursor C, and the position of the abnormal shadow candidate, that is, the stereoscopic marker image is displayed on the monitor 8. When the stereoscopic cursor C is positioned within a predetermined range from the position of the abnormal shadow candidate when the is displayed, the stereoscopic cursor is moved to the position of the abnormal shadow candidate, that is, the stereoscopic marker image. Even if it is difficult for the observer to recognize the position of the stereoscopic cursor C in the depth direction, the abnormal shadow candidate intended by the observer Only by moving the three-dimensional cursor C near, it is possible to accurately move the three-dimensional cursor C to the position of the intended prospective abnormal pattern of the observer.

In the above-described embodiment, one embodiment of the stereoscopic image display device of the present invention is applied to a breast image capturing and displaying system. However, the subject of the present invention is not limited to the breast, and for example, a chest or a head. The present invention can also be applied to a radiographic imaging display system that captures images and the like.

Claims

A display unit that displays a stereoscopic image that can be stereoscopically viewed using a radiographic image for each of the imaging directions acquired by irradiating the subject with radiation from different imaging directions;
A stereoscopic cursor display control unit that causes the display unit to display a stereoscopic cursor that can move in the depth direction and the in-plane direction of the stereoscopic image displayed on the display unit;
An abnormal shadow candidate detecting unit for detecting an abnormal shadow candidate from each of the radiographic images for each imaging direction;
An abnormal shadow candidate display control unit that causes the display unit to display the position of the abnormal shadow candidate detected by the abnormal shadow candidate detection unit together with the stereoscopic image;
An input unit for inputting an instruction to move the three-dimensional cursor;
The stereoscopic cursor is moved based on the movement instruction of the stereoscopic cursor input by the input unit, and when the position of the abnormal shadow candidate is displayed on the display unit, the stereoscopic cursor becomes the abnormal shadow candidate. A stereoscopic image display apparatus, comprising: a stereoscopic cursor position control unit that moves the stereoscopic cursor to the position of the abnormal shadow candidate when positioned within a predetermined range from a position.
When the plurality of abnormal shadow candidates are detected by the abnormal shadow candidate detection unit,
The stereoscopic image display apparatus according to claim 1, wherein the stereoscopic cursor position control unit moves the stereoscopic cursor to the position of the abnormal shadow candidate closest to the current position of the stereoscopic cursor. .
The abnormal shadow candidate display control unit changes the display mode of the position of the abnormal shadow candidate that is second closest to the current position of the three-dimensional cursor and displays it on the display unit. 3. The stereoscopic image display device according to 2.
4. The stereoscopic image display device according to claim 3, wherein the display mode blinks.
A display unit that displays a stereoscopic image that can be stereoscopically viewed using a radiographic image for each of the imaging directions acquired by irradiating the subject with radiation from different imaging directions;
A stereoscopic cursor display control unit that causes the display unit to display a stereoscopic cursor that can move in the depth direction and the in-plane direction of the stereoscopic image displayed on the display unit;
In a stereoscopic image display method in a stereoscopic image display device comprising an input unit for inputting an instruction to move the stereoscopic cursor,
Detecting abnormal shadow candidates from each of the radiographic images for each imaging direction;
Displaying the position of the detected abnormal shadow candidate together with the stereoscopic image on the display unit;
The solid cursor is moved based on the movement instruction of the solid cursor input by the input unit, and the position of the abnormal shadow candidate is displayed on the display unit. A stereoscopic image display method, comprising: moving the stereoscopic cursor to a position of the abnormal shadow candidate when the position is within a predetermined range from a position.
When a plurality of the abnormal shadow candidates are detected,
6. The stereoscopic image display method according to claim 5, wherein the stereoscopic cursor is moved to the position of the abnormal shadow candidate closest to the current position of the stereoscopic cursor.
The stereoscopic image display method according to claim 6, wherein the display mode of the position of the abnormal shadow candidate closest to the current position of the stereoscopic cursor is changed and displayed on the display unit.
The stereoscopic image display method according to claim 7, wherein the display mode blinks.