WO2012132298A1 - 3d image display device and 3d image display method - Google Patents
3d image display device and 3d image display method Download PDFInfo
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- WO2012132298A1 WO2012132298A1 PCT/JP2012/001869 JP2012001869W WO2012132298A1 WO 2012132298 A1 WO2012132298 A1 WO 2012132298A1 JP 2012001869 W JP2012001869 W JP 2012001869W WO 2012132298 A1 WO2012132298 A1 WO 2012132298A1
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- stereoscopic image
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- 238000000034 method Methods 0.000 title claims description 32
- 238000003384 imaging method Methods 0.000 claims abstract description 26
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- 208000004434 Calcinosis Diseases 0.000 description 8
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- 230000004927 fusion Effects 0.000 description 4
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/502—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for diagnosis of breast, i.e. mammography
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
- A61B6/022—Stereoscopic imaging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0407—Supports, e.g. tables or beds, for the body or parts of the body
- A61B6/0414—Supports, e.g. tables or beds, for the body or parts of the body with compression means
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/46—Arrangements for interfacing with the operator or the patient
- A61B6/461—Displaying means of special interest
- A61B6/466—Displaying means of special interest adapted to display 3D data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
- H04N13/20—Image signal generators
- H04N13/204—Image signal generators using stereoscopic image cameras
- H04N13/207—Image signal generators using stereoscopic image cameras using a single 2D image sensor
- H04N13/211—Image signal generators using stereoscopic image cameras using a single 2D image sensor using temporal multiplexing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B10/00—Other methods or instruments for diagnosis, e.g. instruments for taking a cell sample, for biopsy, for vaccination diagnosis; Sex determination; Ovulation-period determination; Throat striking implements
- A61B10/02—Instruments for taking cell samples or for biopsy
- A61B10/0233—Pointed or sharp biopsy instruments
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- H—ELECTRICITY
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- H04N2013/0074—Stereoscopic image analysis
- H04N2013/0081—Depth or disparity estimation from stereoscopic image signals
Definitions
- 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.
- 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.
- tissue specimens around the lesion may be collected in hospital examinations.
- a hollow tissue sampling needle hereinafter referred to as a living tissue
- a biopsy that punctures a patient referred to as a meter reading
- a stereo biopsy device has been proposed as a device for performing such a biopsy.
- This stereo biopsy device irradiates a subject with radiation from two different imaging directions, detects the irradiated radiation with a radiation detector, and obtains a radiation image with a parallax, and these two radiation images
- a specific part in an image such as calcification is designated as a target, but it may be difficult to designate the same specific part as a target in two radiographic images.
- the designated target is displayed in the subject image overlapping in the depth direction, and therefore it is extremely difficult to recognize the position of the target in the depth direction. Have difficulty.
- Patent Document 1 in order to make it possible to grasp the position in the depth direction of the specific part in the stereoscopic image, the left and right separates corresponding to the parallax of the left and right eyes that indicate the distance in the depth direction of the stereoscopic image are shown.
- a stereoscopic image display device is disclosed in which the distance mark is superimposed on the left and right images constituting the stereoscopic image.
- a target is specified using a radiographic image obtained by irradiating radiation from a photographing direction of ⁇ 15 °, and thus generated using this radiographic image.
- the eyes When stereoscopically viewing a stereo image, the eyes must be properly adjusted (crossed eyes) to the specified target position.
- the stereo image is deep, it is difficult to focus on the target position. .
- FIG. 14 when the target to be focused on (in the figure, cross) is located behind the other part (in the figure, circle), the focus is on the part on the near side. Therefore, it is difficult to focus on a desired target, and there is a problem that it takes time to check whether or not the target is correctly specified, and fatigue increases.
- Patent Document 2 in the X-ray tomography apparatus, since it is difficult to grasp the positional relationship between a reconfigurable region where an image is actually displayed and a region of interest to be observed, it is determined whether or not the region of interest is in a reconfigurable region. In order to make it possible to directly recognize the two-dimensional image in which the mark indicating the position of the region of interest and the reconfigurable range are indicated at the position in the depth direction of the specified region of interest Although it is disclosed that it is displayed on one screen together with the two X-ray images used in this, this mark is not stereoscopically visible and is not intended to assist stereoscopic vision.
- the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stereoscopic image display device and a stereoscopic image display method capable of easily stereoscopically viewing a specified target even when the depth direction is deep. It is.
- 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 plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions; In each of the plurality of radiation images, an input unit for inputting a predetermined target; A parallax amount calculation unit that calculates the parallax amount of the predetermined target input by the input unit; Each of the plurality of radiographic images includes a mark applying unit that applies a mark having the same parallax amount as the parallax amount calculated by the parallax amount calculating unit.
- the “stereoscopic image” means an image that allows the observer to recognize the stereoscopic effect of the subject.
- the mark applying unit may add a mark to a position moved in the vertical direction or the horizontal direction from the position of the predetermined target input by the input unit. Good.
- the mark applying unit may add a mark to a region other than the specific subject area in the plurality of radiation images.
- the “specific subject” may be a region of interest such as an abnormal shadow.
- the radiation image is a breast image, it may be a region showing calcification.
- the mark is generated at a density different from the density of the background other than the specific subject area in the plurality of radiographic images.
- the mark is a square.
- the mark may be a frame centered on the position of a predetermined target input by the input unit.
- the frame is preferably rectangular.
- the stereoscopic image display method of the present invention is a stereoscopic image display method for displaying a stereoscopically viewable image using a plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions.
- the parallax amount of the input target is calculated, A mark having the same amount of parallax as the calculated amount of parallax is assigned to each of the plurality of radiation images.
- the stereoscopic image display method of the present invention it is possible to give a mark to a position moved in the vertical direction or the horizontal direction from the input target position.
- marks can be given to areas other than specific subject areas in a plurality of radiographic images.
- the mark is generated with a density different from the density of the background other than the specific subject area in the plurality of radiographic images.
- the mark is a square.
- the mark may be a frame centered on the position of the input target.
- the frame is preferably rectangular.
- a stereoscopic image that can be stereoscopically viewed using a plurality of radiographic images acquired by irradiating the subject with radiation from at least two imaging directions.
- the parallax amount of the predetermined target input is calculated for each of the plurality of radiographic images
- the calculated parallax amount is calculated for each of the plurality of radiographic images. Since the mark with the same amount of parallax is applied, the shape of abnormal shadows, calcifications, lesions, etc.
- the mark can assist the adjustment of the eyes with respect to the depth direction when the observer stereoscopically views. If the focus is in the depth direction position of the mark, the input predetermined target is in the same depth direction position, so that the focus can be easily moved and adjusted, making it easier to stereoscopically view the predetermined target. be able to.
- the work efficiency is improved and the fatigue of the observer can be reduced.
- the observer can easily stereoscopically view the predetermined target by fusing the mark.
- the object to be fused is the same mark, so that all observers can stereoscopically view the same part by focusing on the mark.
- the position in the depth direction is easily recognized by the presence of the mark, so the observer can immediately You can notice that they are different.
- FIG. 1 Schematic configuration diagram of stereo biopsy device
- the figure which shows a part of front view of the stereo biopsy apparatus of FIG. View of compression plate from above 1 is a diagram showing the internal configuration of the computer of the stereo biopsy device of FIG.
- the flowchart which shows the effect
- Diagram explaining the fusion of marks The figure explaining the fusion of a square mark
- FIG. 1 is a schematic configuration diagram of a stereo biopsy device 1
- FIG. 2 shows a part of a front view of the stereo biopsy device 1.
- the stereo biopsy device 1 includes a mammography device 10 with the biopsy unit 2 attached thereto, a computer 8 connected to the mammography device 10, and a monitor 9 connected to the computer 8. And an input unit 7.
- 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 be rotated.
- the arm part 13 connected with the base 11 is provided.
- 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.
- the imaging table 14 includes a charge amplifier that converts a charge signal read from the radiation detector 15 into a voltage signal, a correlated double sampling circuit that samples a voltage signal output from the charge amplifier, a voltage A circuit board provided with an AD conversion unit for converting a signal into a digital signal is also installed.
- the imaging 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 imaging table 14 is fixed to the base 11. can do.
- the radiation 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 a charge, 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.
- 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.
- TFT thin film transistor
- a radiation source 17 and a radiation source controller 32 are accommodated in the radiation irradiation unit 16.
- the radiation source controller 32 irradiates the radiation from the radiation source 17 and the radiation generation conditions (tube current (mA), irradiation time (ms), tube current time product (mAs), tube voltage (kV) in the radiation source 17. Etc.).
- FIG. 3 is a view of the compression plate 18 as viewed from above. As shown in FIG. 3, the compression plate 18 is about 10 so that biopsy can be performed with the breast fixed by the imaging table 14 and the compression plate 18. An opening 5 having a size of 10 cm square is provided.
- the biopsy unit 2 is mechanically and electrically connected to the stereo biopsy device 1 by inserting the base portion of the biopsy unit 2 into the opening 5 of the support portion 20 of the compression plate 18 and attaching the lower end of the base portion to the arm portion 13. It is what is done.
- the biopsy unit 2 includes a biopsy needle 21 that punctures the breast.
- the biopsy needle unit 22 is configured to be detachable, a needle support portion 23 that supports the biopsy needle unit 22, and the needle support portion 23 along the rail.
- a moving mechanism 24 that moves the biopsy needle unit 22 in the X, Y, and Z directions shown in FIGS. 1 to 3 by moving the needle support portion 23 in or out is provided.
- the position of the tip of the biopsy needle 21 of the biopsy needle unit 22 is recognized and controlled as a three-dimensional coordinate position (x, y, z) by a needle position controller 35 provided in the moving mechanism 24.
- a needle position controller 35 provided in the moving mechanism 24. 1 is the X direction
- the paper vertical direction in FIG. 2 is the Y direction
- the paper vertical direction in FIG. 3 is the Z direction.
- the input unit 7 accepts input of imaging 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.
- an input device such as a keyboard and a mouse, for example.
- a function for designating and inputting a predetermined target such as an abnormal shadow, calcification, or lesion in a radiographic image for a left eye and a radiographic image for a right eye read from a radiographic image storage unit 8b described later is provided. .
- the computer 8 includes a central processing unit (CPU), a semiconductor memory, a storage device such as a hard disk and an SSD, and the like. With these hardware, a control unit 8a, a radiation image storage unit 8b, and a display as shown in FIG. A control unit 8c, a parallax amount calculation unit 8d, a mark provision unit 8e, and a position acquisition unit 8f are configured.
- 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 a radiation image signal for each imaging direction acquired by the radiation detector 15 in advance.
- the display control unit 8c performs predetermined processing on the two radiographic image signals of the left-eye radiographic image and the right-eye radiographic image read from the radiographic image storage unit 8b, and then performs stereo processing of the breast M on the monitor 9. An image is displayed. Further, as shown in FIG. 6, it also functions as a cursor display control unit for displaying a left-eye radiographic image and a right-eye radiographic image that constitute a stereo image displayed on the monitor 9 described later, with the arrow-shaped cursor C superimposed thereon, The cursor C is moved in the in-plane direction (XY direction) by changing the display position of the cursor C in the left-right direction (X direction) and the vertical direction (Y direction) in response to an input from the input unit 7 described later. .
- the parallax amount calculation unit 8 d calculates the parallax amount of a predetermined target input by the input unit 7.
- the parallax amount is calculated by detecting the coordinate value of a predetermined target designated on the left-eye radiographic image and the right-eye radiographic image, and calculating the position of the predetermined target between the left-eye radiographic image and the right-eye radiographic image. It can be obtained by calculating the amount of deviation. Note that the left-eye radiation image and the right-eye radiation are projected and retracted from the display surface on which the stereo image composed of the left-eye radiation image and the right-eye radiation image is displayed, that is, on the near side and the far side of the cross point.
- the direction of deviation is also obtained when calculating the amount of parallax.
- the method of calculating the amount of parallax is not limited to this, and a known method can be used.
- the mark giving unit 8e gives a mark having the same parallax amount as the predetermined target parallax amount calculated by the parallax amount calculating unit 8d in each of the left-eye radiographic image and the right-eye radiographic image. A method for providing a mark will be described later in detail.
- the position acquisition unit 8f acquires position information of a predetermined target input in each of the left-eye radiographic image and the right-eye radiographic image constituting the stereo image, specifically, the left-eye radiographic image and the right-eye radiographic image.
- the position information of the pixel indicated by the cursor C in the radiographic image is acquired, and for example, the three-dimensional position information of the target such as an abnormal shadow, calcification, or lesion indicated by the cursor C is acquired by triangulation.
- the position information is output to the control unit 8a.
- the monitor 9 is configured to display a stereo image by using the two radiographic image signals output from the computer 8 to display the radiographic image for each imaging direction as a two-dimensional image.
- 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.
- two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and a stereo image may be generated by observing the images with a polarizing glass, or a parallax barrier method and a lenticular method
- a stereo image may be generated by displaying two radiation images on a stereoscopically viewable 3D liquid crystal.
- the device that displays a stereo image and the device that displays a two-dimensional image may be configured separately, or may be configured as the same device if they can be displayed on the same screen.
- 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 (S1).
- the control unit 8a reads an angle ⁇ (hereinafter referred to as a convergence angle ⁇ ) formed by two different shooting directions in order to capture a preset stereo image, and the read convergence angle ⁇ . Is output to the arm controller 31.
- the convergence angle ⁇ is not limited to this, and may be any angle that allows the observer to recognize the breast M displayed as a stereo image on the monitor 9 as a stereoscopic image having a stereoscopic effect. Any angle may be used as long as it is present.
- the arm controller 31 receives the information on the convergence angle ⁇ 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 ⁇ as shown in FIG.
- a control signal is output so as to rotate + ⁇ ′ with respect to the 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 + 15 ° with respect to a direction perpendicular to the imaging table 14.
- 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.
- radiation is emitted from the radiation source 17
- a radiation image obtained by imaging the breast M from the + 15 ° direction is detected by the radiation detector 15, and a radiation image signal is read by the detector controller 33.
- the radiographic image signal is stored in the radiographic image storage unit 8 b of the computer 8.
- the arm controller 31 outputs a control signal so as to rotate the arm unit 13 by ⁇ ′ with respect to a direction perpendicular to the imaging table 14 as shown in FIG. That is, in the present embodiment, the control signal is output so that the arm unit 13 is rotated by ⁇ 15 ° with respect to the direction perpendicular to the imaging table 14.
- 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 to read the image.
- radiation is emitted from the radiation source 17
- a radiation image obtained by photographing the breast M from the ⁇ 15 ° direction is detected by the radiation detector 15, and a radiation image signal is read by the detector controller 33.
- the radiation image storage unit 8b of the computer 8 stores the signal.
- the operator operates the input unit 7 to move the cursor C so that the cursor C points to the desired target, and designates, for example, the target A1 as the desired target (S5).
- the observer puts the cursor C on the target A1, for example, the target A1 indicated by the cursor C is input by left-clicking the mouse.
- control unit 8a determines whether or not the target has been determined, that is, whether or not the target has been input (S6). If the target has not been input (S6; NO), the process proceeds to step S5. The subsequent processing is repeated until the target is input. On the other hand, when the target is input (S6; YES), the parallax amount calculation unit 8d calculates the parallax amount of the target A1 input by the input unit 7 as described above (S7).
- the mark assigning unit 8e assigns a mark having the same amount of parallax as the parallax amount of the target A1 calculated by the parallax amount calculating unit 8d in each of the left-eye radiographic image and the right-eye radiographic image (S8).
- the mark is applied to the mark B1 configured by a square frame centered on the position of the target A1 input by the input unit 7 in each of the left-eye radiographic image and the right-eye radiographic image. Composite the images. As a result, the mark B1 has the same parallax as the target A1.
- the display control unit 8c performs a predetermined process on the two radiographic image signals of the left-eye radiographic image and the right-eye radiographic image each provided with the mark B1, and then displays the stereo image on the monitor 9. (S9).
- FIG. 8 shows a diagram for explaining the positional relationship when a stereo image is displayed.
- the upper side in the figure will be described as the near side where the observer is located, and the lower side in the figure will be described as the depth side.
- the observer stereoscopically views a stereo image composed of the left-eye radiological image and the right-eye radiographic image each provided with the mark B1
- the target A1 and the mark B1 have the same amount of parallax, and as shown in FIG.
- the mark B1 is positioned at the same depth position as the target A1.
- the observer stereoscopically views the stereo image composed of the left-eye radiographic image and the right-eye radiographic image captured at the 30 ° convergence angle as described above, as shown in FIG.
- the observer moves the left and right line of sight in the direction of the arrow in FIG. 12, and performs fusion so that the mark looks as if it is crossed.
- the mark B1 of the present embodiment is formed of a quadrangle, as shown in FIG. 13, when the observer crosses the eyes, the vertical lines (1) are (3) and (2) are (4).
- a mark B1 that is formed by a line with a clear side compared to a target that may not have a clear shape such as abnormal shadow, calcification, or lesion is Since the line-of-sight area is wide, focusing can be performed easily.
- the mark B1 is an eye for the depth direction when the observer stereoscopically views. Can assist adjustment. If the focus is on the position in the depth direction of the mark B1, the focus can be easily moved and adjusted because it is in the same depth direction position as the target A1.
- the observer can make the target A1 three-dimensional by fusing the mark B1. Easy to see.
- the object to be fused is the same mark B1, so that all observers can stereoscopically view the same part by focusing on the mark B1.
- the position in the depth direction is easily recognized by the presence of the mark B1, so that the observer can recognize it. Can quickly notice that they are different.
- the position acquisition unit 8f determines whether or not the target desired by the observer has been determined by, for example, pressing the enter key of the keyboard by the observer (S10). If it is determined that the target has not been determined (S10; NO), the process proceeds to step S5, and the processes after step S5 are repeated.
- the position acquisition unit 8f acquires the determined position coordinates of the target, that is, the position coordinates of the pixel indicated by the cursor C (S11).
- the position acquisition unit 8f acquires the coordinate positions (x2, y2) and (x3, y3) of the corresponding pixels indicated by the cursor C in the left-eye radiographic image and the right-eye radiographic image, and based on the acquired coordinate positions, For example, the three-dimensional position coordinates (x1, y1, z1) of the pixel indicated by the cursor C are acquired by triangulation.
- the position acquisition unit 8f outputs the three-dimensional position coordinates (x1, y1, z1) of the pixel indicated by the acquired cursor C, that is, the three-dimensional coordinate position (x1, y1, z1) of the target to the needle position controller 35 of the biopsy unit 2. To do.
- a control signal for moving the biopsy needle 21 is output from the control unit 8 a to the needle position controller 35.
- the needle position controller 35 Based on the previously input three-dimensional coordinate position (x1, y1, z1), the needle position controller 35 is arranged so that the tip of the biopsy needle 21 is arranged at the three-dimensional coordinate position (x1, y1, z1 + ⁇ ).
- the biopsy needle 21 is moved.
- ⁇ is set to a sufficiently large value such that the biopsy needle 21 does not pierce the breast M. Thereby, the biopsy needle 21 is set above the target.
- the tip of the biopsy needle 21 is controlled by the three-dimensional coordinate position (x1) under the control of the control unit 8a and the needle position controller 35. , Y1, z1), and the biopsy needle 21 punctures the breast M (S12). In this way, the stereo biopsy device 1 performs biopsy.
- the parallax amount of the input target A1 is calculated in each of the left-eye radiation image and the right-eye radiation image, and each of the left-eye radiation image and the right-eye radiation image is calculated. Since the mark B1 having the same amount of parallax as the calculated amount of parallax is given, even if the depth direction is deep and the input target A1 is difficult to fuse, abnormal shadows, calcification, lesions, etc. Compared with a target whose shape may not be clear, the mark B1 configured with a preset shape is easier for the observer to focus. Therefore, the mark B1 can assist the adjustment of the eyes with respect to the depth direction when the observer stereoscopically views. If the position of the mark B1 in the depth direction is in focus, the input target A1 is in the same depth direction position, so that the focus can be easily moved and adjusted so that the target A1 can be viewed stereoscopically. Can do.
- the observer can make the target A1 stereoscopically viewable by fusing the mark B1.
- the object to be fused is the same mark B1, so that all observers can stereoscopically view the same part by focusing on the mark B1.
- the position in the depth direction is easily recognized by the presence of the mark B1, so that the observer can recognize it. You can quickly notice that it is different.
- the mark imparting unit 8e imparts the mark B1 configured by the quadrangular frame centered on the position of the target A1 as described above, but the present invention is not limited to this. .
- the mark B ⁇ b> 1 may be provided at a position moved by the same distance in the horizontal direction from the position of the target A ⁇ b> 1 in each of the left-eye radiographic image and the right-eye radiographic image.
- the input target A1 has the same amount of parallax, and thus is in the same depth direction.
- the target A1 can be easily stereoscopically viewed by moving it. Thereby, the same effect as the above-described embodiment can be obtained.
- the mark B1 is preferably provided at a position closer to the target A1.
- the mark B1 may be provided at a position moved in the vertical direction by the same distance from the position of the target A1 in each of the left-eye radiographic image and the right-eye radiographic image.
- the input target A1 has the same amount of parallax, and thus is in the same depth direction.
- the target A1 can be easily stereoscopically viewed by moving it. Thereby, the same effect as the above-described embodiment can be obtained.
- a mark B1 may be given in addition to the breast M region in each of the left-eye radiographic image and the right-eye radiographic image.
- the color of the mark B1 is generated with a density (white in this embodiment) different from the background color of the breast M (black in this embodiment).
- the background is uniform black
- the mark B1 is easily noticeable and easily focused.
- the input target A1 has the same amount of parallax, and therefore has the same depth direction. It can be easily moved and matched, and the target A1 can be easily stereoscopically viewed. Thereby, the same effect as the above-described embodiment can be obtained.
- the mark imparting unit 8e imparts the mark B1 configured by a quadrangular frame.
- the mark may be, for example, a round frame, a rhombus, It can be composed of a frame of various shapes such as a star shape. Further, the mark is not limited to the frame, and the content may be filled.
- the mark B1 is preferably the same mark in each of the left-eye radiographic image and the right-eye radiographic image in order to facilitate stereoscopic viewing.
- the mark B1 is preferably positioned at the same position in the left-eye radiographic image and the right-eye radiographic image in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) in order to enable stereoscopic viewing.
- the mark B1 may be provided at a position in the vertical direction of the target A1. Further, the mark B1 may be added to the position of the average value in the vertical direction of the target A1 input in both the left-eye radiographic image and the right-eye radiographic image.
- the mark B1 is provided at the same position in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) in the left-eye radiographic image and the right-eye radiographic image.
- the position of the target A1 input in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) is different between the radiographic image for right eye and the radiographic image for right eye
- the position of the input target A1 in the vertical direction The mark B1 may be given according to the above. That is, the vertical direction of the mark B1 may be set at different positions for the left-eye radiographic image and the right-eye radiographic image. In this case, although the stereoscopic view is not possible, it is possible to notice that the position of the input target A1, that is, the place where the stereoscopic view is actually desired is different.
- the breast M has been described as a subject.
- the subject is not particularly limited.
- a breast or head is photographed as a subject, and a biopsy needle is punctured at the position displayed most white.
- the present invention can also be applied to a stereo biopsy device.
- the stereo biopsy device has been described.
- the present invention is not limited to this, and the present invention is also applicable to a stereoscopic image display device that is not equipped with a biopsy function.
- the target can be easily viewed stereoscopically when the observer targets a region of interest such as a lesion in the stereoscopic image.
- the present invention can be applied not only to a radiographic image display device that images a breast as a subject but also to a radiographic image display device that images a chest or a head.
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Abstract
[Problem] To make it possible to three-dimensionally view a specified target easily, even when there is significant depth, using a 3D image display device (1). [Solution] A 3D image display device (1) for displaying a 3D image that can be viewed three-dimensionally, using a plurality of radiographic images obtained by irradiating a subject to be imaged with radioactive rays from at least two imaging directions, wherein the amount of parallax of an inputted, prescribed target (A1) is calculated in each of the plurality of radiographic images, and a mark (B1) having the same amount of parallax as the calculated amount of parallax is made in each of the plurality of radiographic images.
Description
本発明は、互いに異なる2つの撮影方向から放射線を被写体へ照射して撮影方向毎の放射線画像を検出し、その検出した2つの放射線画像を用いて立体視画像を表示する立体視画像表示装置及び立体視画像表示方法に関するものである。
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.
従来、複数の画像を組み合わせて表示することにより、視差を利用して立体視できることが知られている。このような立体視できる画像(以下、立体視画像またはステレオ画像という)は、同一の被写体を異なる方向から撮影して取得された互いに視差のある複数の画像に基づいて生成されており、このような立体視画像の生成は、デジタルカメラやテレビなどの分野だけでなく、放射線画像撮影の分野においても利用されている。すなわち、被検者に対して互いに異なる方向から放射線を照射し、その被検者を透過した放射線を放射線画像検出器によりそれぞれ検出して互いに視差のある複数の放射線画像を取得し、これらの放射線画像に基づいて立体視画像を生成することが行われており、このように立体視画像を生成することによって観察者は奥行感のある放射線画像を観察することができて、より診断に適した放射線画像を観察することができる。
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.
一方、病院の検査では病変周辺の組織片を採取することがあるが、近年、患者に大きな負担をかけずに組織片を採取する方法として、中が空洞の組織採取用の針(以下、生検針と称する)を患者に刺し、針の空洞に埋め込まれた組織を採取するバイオプシが注目されている。そして、このようなバイオプシを行うための装置としてステレオバイオプシ装置が提案されている。
On the other hand, tissue specimens around the lesion may be collected in hospital examinations. Recently, as a method of collecting tissue pieces without imposing a heavy burden on the patient, a hollow tissue sampling needle (hereinafter referred to as a living tissue) is used. A biopsy that punctures a patient (referred to as a meter reading) and collects tissue embedded in the needle cavity has attracted attention. A stereo biopsy device has been proposed as a device for performing such a biopsy.
このステレオバイオプシ装置は、被写体に対して互いに異なる2つの撮影方向から放射線を照射し、照射された放射線を放射線検出器によって検出して互いに視差のある放射線画像を取得し、これらの2つの放射線画像の各々において、例えば***画像においては石灰化等の画像中の特定の部位をターゲットとして指定するが、2つの放射線画像において同一の特定の部位をターゲットとして指定するのは困難な場合がある。
This stereo biopsy device irradiates a subject with radiation from two different imaging directions, detects the irradiated radiation with a radiation detector, and obtains a radiation image with a parallax, and these two radiation images For example, in a breast image, a specific part in an image such as calcification is designated as a target, but it may be difficult to designate the same specific part as a target in two radiographic images.
そこで、2つの放射線画像において同一の特定の部位をターゲットとして指定した後に、2つの放射線画像を用いて生成されたステレオ画像を観察する、すなわち立体視を行うことで、ターゲットが正しく指定されているか否かを確認している。
Therefore, whether the target is correctly specified by observing the stereo image generated using the two radiographic images after designating the same specific part as the target in the two radiographic images, that is, performing stereoscopic vision. It is confirmed whether or not.
しかしながら、立体視画像表示装置では、特に放射線画像のような透視画像においては、奥行方向に重なり合う被写体画像中に指定したターゲットが表示されているため、ターゲットの奥行方向の位置を認識することは極めて困難である。
However, in the stereoscopic image display device, particularly in a fluoroscopic image such as a radiographic image, the designated target is displayed in the subject image overlapping in the depth direction, and therefore it is extremely difficult to recognize the position of the target in the depth direction. Have difficulty.
そこで特許文献1に、立体視画像において特定部位の奥行き方向の位置を把握できるようにするために、立体視画像の奥行き方向の距離を示す、立体視する左右の目の視差に対応した左右別個の距離マークを、立体視画像を構成する左右の画像にそれぞれ重ねて表示するようにした立体視画像表示装置が開示されている。
Therefore, in Patent Document 1, in order to make it possible to grasp the position in the depth direction of the specific part in the stereoscopic image, the left and right separates corresponding to the parallax of the left and right eyes that indicate the distance in the depth direction of the stereoscopic image are shown. A stereoscopic image display device is disclosed in which the distance mark is superimposed on the left and right images constituting the stereoscopic image.
一方、ステレオバイオプシ装置のような立体視表示装置においては、±15°の撮影方向から放射線を照射することにより取得した放射線画像を用いてターゲットを指定するため、この放射線画像を用いて生成されたステレオ画像を立体視するときに、指定されたターゲットの位置にきちんと目の調節(寄り目)をしなければならないが、ステレオ画像は奥行きが深いため、狙った位置に焦点を合わすのは困難である。特に図14に示すように、実際に焦点を合わせたいターゲット(図中、バツ印)が他の部位(図中、丸印)の後ろ側に位置する場合には、手前側にある部位に焦点が合い易いため、所望するターゲットに焦点を合わせるのは困難であり、ターゲットが正しく指定されているか否かの確認に時間がかかって疲労が増加してしまう問題がある。
On the other hand, in a stereoscopic display device such as a stereo biopsy device, a target is specified using a radiographic image obtained by irradiating radiation from a photographing direction of ± 15 °, and thus generated using this radiographic image. When stereoscopically viewing a stereo image, the eyes must be properly adjusted (crossed eyes) to the specified target position. However, since the stereo image is deep, it is difficult to focus on the target position. . In particular, as shown in FIG. 14, when the target to be focused on (in the figure, cross) is located behind the other part (in the figure, circle), the focus is on the part on the near side. Therefore, it is difficult to focus on a desired target, and there is a problem that it takes time to check whether or not the target is correctly specified, and fatigue increases.
上記特許文献1の立体視画像表示装置では、距離マークが付与された奥行き方向の位置に、関心部位が位置しない場合には、距離マークには容易に焦点を合わせることができても関心部位に焦点を合わせて立体視するのは難しい場合がある。
In the stereoscopic image display apparatus disclosed in Patent Document 1, when the region of interest is not located at the position in the depth direction to which the distance mark is given, the distance mark can be easily focused even if it can be easily focused. It may be difficult to achieve a stereoscopic view in focus.
なお特許文献2には、X線断層撮影装置において、実際に画像表示する再構成可能領域と観察したい関心部位の位置関係が把握し難いため、関心部位が再構成可能領域に入っているか否かを直接的に視認できるようにするために、指定された関心部位の奥行き方向の位置における、関心部位の位置を示すマークと再構成可能範囲とが示された2次元画像を、関心部位の指定に用いた2つのX線画像とともに一画面に表示させるようにしたものが開示されているが、このマークは立体視可能なものではないし、立体視を補助するためのものでもない。
In Patent Document 2, in the X-ray tomography apparatus, since it is difficult to grasp the positional relationship between a reconfigurable region where an image is actually displayed and a region of interest to be observed, it is determined whether or not the region of interest is in a reconfigurable region. In order to make it possible to directly recognize the two-dimensional image in which the mark indicating the position of the region of interest and the reconfigurable range are indicated at the position in the depth direction of the specified region of interest Although it is disclosed that it is displayed on one screen together with the two X-ray images used in this, this mark is not stereoscopically visible and is not intended to assist stereoscopic vision.
本発明は上記事情に鑑みてなされたものであり、奥行き方向が深くても、指定したターゲットを簡単に立体視できる立体視画像表示装置及び立体視画像表示方法を提供することを目的とするものである。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a stereoscopic image display device and a stereoscopic image display method capable of easily stereoscopically viewing a specified target even when the depth direction is deep. It is.
本発明の立体視画像表示装置は、少なくとも2方向の撮影方向から被写体へ放射線を照射することにより取得された複数の放射線画像を用いて立体視可能な立体視画像を表示する表示部と、
複数の放射線画像の各々において、所定のターゲットを入力する入力部と、
入力部により入力された所定のターゲットの視差量を算出する視差量算出部と、
複数の放射線画像の各々に、視差量算出部によって算出された視差量と同じ視差量を有するマークを付与するマーク付与部とを備えていることを特徴とするものである。 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 plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions;
In each of the plurality of radiation images, an input unit for inputting a predetermined target;
A parallax amount calculation unit that calculates the parallax amount of the predetermined target input by the input unit;
Each of the plurality of radiographic images includes a mark applying unit that applies a mark having the same parallax amount as the parallax amount calculated by the parallax amount calculating unit.
複数の放射線画像の各々において、所定のターゲットを入力する入力部と、
入力部により入力された所定のターゲットの視差量を算出する視差量算出部と、
複数の放射線画像の各々に、視差量算出部によって算出された視差量と同じ視差量を有するマークを付与するマーク付与部とを備えていることを特徴とするものである。 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 plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions;
In each of the plurality of radiation images, an input unit for inputting a predetermined target;
A parallax amount calculation unit that calculates the parallax amount of the predetermined target input by the input unit;
Each of the plurality of radiographic images includes a mark applying unit that applies a mark having the same parallax amount as the parallax amount calculated by the parallax amount calculating unit.
ここで、「立体視画像」とは、観察者が被写体の立体感を認識できる画像を意味するものである。
Here, the “stereoscopic image” means an image that allows the observer to recognize the stereoscopic effect of the subject.
また、本発明の立体視画像表示装置においては、マーク付与部が、入力部によって入力された所定のターゲットの位置から、垂直方向又は水平方向に移動した位置にマークを付与するものであってもよい。
In the stereoscopic image display device of the present invention, the mark applying unit may add a mark to a position moved in the vertical direction or the horizontal direction from the position of the predetermined target input by the input unit. Good.
また、本発明の立体視画像表示装置においては、マーク付与部が、複数の放射線画像中の特定の被写体領域以外にマークを付与するものであってもよい。
In the stereoscopic image display device of the present invention, the mark applying unit may add a mark to a region other than the specific subject area in the plurality of radiation images.
なお、本発明において「特定の被写体」は、異常陰影等の関心部位であってもよく、例えば放射線画像が***画像である場合には、石灰化を示す領域であってもよい。
In the present invention, the “specific subject” may be a region of interest such as an abnormal shadow. For example, when the radiation image is a breast image, it may be a region showing calcification.
また、本発明の立体視画像表示装置においては、マークが、複数の放射線画像中の特定の被写体領域以外の背景の濃度とは異なる濃度で生成されていることが好ましい。
In the stereoscopic image display device of the present invention, it is preferable that the mark is generated at a density different from the density of the background other than the specific subject area in the plurality of radiographic images.
また、本発明の立体視画像表示装置においては、マークが、四角形であることが好ましい。
In the stereoscopic image display device of the present invention, it is preferable that the mark is a square.
また、本発明の立体視画像表示装置においては、マークが、入力部によって入力された所定のターゲットの位置を中心とした枠であってもよい。
In the stereoscopic image display apparatus of the present invention, the mark may be a frame centered on the position of a predetermined target input by the input unit.
この場合、枠は四角形であることが好ましい。
In this case, the frame is preferably rectangular.
本発明の立体視画像表示方法は、少なくとも2方向の撮影方向から被写体へ放射線を照射することにより取得された複数の放射線画像を用いて立体視可能な立体視画像を表示する立体視画像表示方法において、
複数の放射線画像の各々において、入力された所定のターゲットの視差量を算出し、
複数の放射線画像の各々に、算出された視差量と同じ視差量を有するマークを付与することを特徴とする。 The stereoscopic image display method of the present invention is a stereoscopic image display method for displaying a stereoscopically viewable image using a plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions. In
In each of the plurality of radiation images, the parallax amount of the input target is calculated,
A mark having the same amount of parallax as the calculated amount of parallax is assigned to each of the plurality of radiation images.
複数の放射線画像の各々において、入力された所定のターゲットの視差量を算出し、
複数の放射線画像の各々に、算出された視差量と同じ視差量を有するマークを付与することを特徴とする。 The stereoscopic image display method of the present invention is a stereoscopic image display method for displaying a stereoscopically viewable image using a plurality of radiation images acquired by irradiating a subject with radiation from at least two imaging directions. In
In each of the plurality of radiation images, the parallax amount of the input target is calculated,
A mark having the same amount of parallax as the calculated amount of parallax is assigned to each of the plurality of radiation images.
なお、本発明の立体視画像表示方法においては、入力された所定のターゲットの位置から、垂直方向又は水平方向に移動した位置にマークを付与することができる。
In the stereoscopic image display method of the present invention, it is possible to give a mark to a position moved in the vertical direction or the horizontal direction from the input target position.
また、本発明の立体視画像表示方法においては、複数の放射線画像中の特定の被写体領域以外にマークを付与することができる。
Also, in the stereoscopic image display method of the present invention, marks can be given to areas other than specific subject areas in a plurality of radiographic images.
また、本発明の立体視画像表示方法においては、マークを、複数の放射線画像中の特定の被写体領域以外の背景の濃度とは異なる濃度で生成することが好ましい。
In the stereoscopic image display method of the present invention, it is preferable that the mark is generated with a density different from the density of the background other than the specific subject area in the plurality of radiographic images.
また、本発明の立体視画像表示方法においては、マークが、四角形であることが好ましい。
In the stereoscopic image display method of the present invention, it is preferable that the mark is a square.
また、本発明の立体視画像表示方法においては、マークが、入力された所定のターゲットの位置を中心とした枠であってもよい。
Further, in the stereoscopic image display method of the present invention, the mark may be a frame centered on the position of the input target.
この場合、枠は四角形であることが好ましい。
In this case, the frame is preferably rectangular.
本発明の立体視画像表示装置及び立体視画像表示方法によれば、少なくとも2方向の撮影方向から被写体へ放射線を照射することにより取得された複数の放射線画像を用いて立体視可能な立体視画像を表示する立体視画像表示装置及び立体視画像表示方法において、複数の放射線画像の各々において、入力された所定のターゲットの視差量を算出し、複数の放射線画像の各々に、算出された視差量と同じ視差量を有するマークを付与するので、奥行き方向が深く、入力された所定のターゲットが融像し難い位置にあったとしても、異常陰影や石灰化、病変等の形状がはっきりとしていない可能性があるターゲットと比較して、予め設定された形状で構成されているマークの方が、観察者は焦点を合わせ易い。それ故に、マークは観察者が立体視するときの奥行方向に対する目の調節を補助することができる。マークの奥行方向の位置に焦点が合えば、入力された所定のターゲットは同じ奥行方向の位置にあるので、焦点を容易に移動させて合わせることができて、所定のターゲットを立体視し易くすることができる。
According to the stereoscopic image display device and the stereoscopic image display method of the present invention, a stereoscopic image that can be stereoscopically viewed using a plurality of radiographic images acquired by irradiating the subject with radiation from at least two imaging directions. In the stereoscopic image display apparatus and the stereoscopic image display method for displaying the parallax, the parallax amount of the predetermined target input is calculated for each of the plurality of radiographic images, and the calculated parallax amount is calculated for each of the plurality of radiographic images. Since the mark with the same amount of parallax is applied, the shape of abnormal shadows, calcifications, lesions, etc. may not be clear even if the depth direction is deep and the input target is in a position where fusion is difficult Compared with a target having a characteristic, an observer can easily focus on a mark configured with a preset shape. Therefore, the mark can assist the adjustment of the eyes with respect to the depth direction when the observer stereoscopically views. If the focus is in the depth direction position of the mark, the input predetermined target is in the same depth direction position, so that the focus can be easily moved and adjusted, making it easier to stereoscopically view the predetermined target. be able to.
また観察者が所定のターゲットを立体視し易くなることにより、作業の効率が上がると共に観察者の疲労を軽減することができる。
Also, since it becomes easier for the observer to stereoscopically view the predetermined target, the work efficiency is improved and the fatigue of the observer can be reduced.
また所定のターゲットの位置の奥行方向上に、目に付くような領域がある場合であっても観察者はマークを融像することにより所定のターゲットを立体視し易くすることができる。
In addition, even if there is an eye-catching region in the depth direction of the position of the predetermined target, the observer can easily stereoscopically view the predetermined target by fusing the mark.
また観察者が複数存在する場合であっても、融像すべき対象が同一のマークなので、全ての観察者がマークに焦点を合わせることにより同じ箇所を立体視することができる。
Also, even when there are a plurality of observers, the object to be fused is the same mark, so that all observers can stereoscopically view the same part by focusing on the mark.
また観察者がマークを融像することにより合わせた立体視の焦点と実際に立体視したい場所が異なる場合には、マークの存在によって奥行方向の位置が認識し易くなっているため観察者はすぐに異なっていることに気づくことができる。
In addition, when the stereoscopic focus combined by the observer fusing the mark and the place where the stereoscopic view is actually desired are different, the position in the depth direction is easily recognized by the presence of the mark, so the observer can immediately You can notice that they are different.
以下、図面を参照して本発明の立体視画像表示装置の一実施形態として着脱可能なバイオプシユニット2が取り付けられた***画像撮影表示装置(マンモグラフィ装置)である***用のステレオバイオプシ装置について説明する。まずは本実施形態のステレオバイオプシ装置1の概略構成について説明する。図1は、ステレオバイオプシ装置1の概略構成図、図2はステレオバイオプシ装置1の正面図の一部を示す。
Hereinafter, a stereo biopsy device for breasts, which is a breast image photographing display device (mammography device) to which a detachable biopsy unit 2 is attached, will be described as an embodiment of a stereoscopic image display device of the present invention with reference to the drawings. . First, a schematic configuration of the stereo biopsy device 1 of the present embodiment will be described. FIG. 1 is a schematic configuration diagram of a stereo biopsy device 1, and FIG. 2 shows a part of a front view of the stereo biopsy device 1.
ステレオバイオプシ装置1は、図1に示すように、バイオプシユニット2が取り付けられた状態の***画像撮影装置10と、***画像撮影装置10に接続されたコンピュータ8と、コンピュータ8に接続されたモニタ9及び入力部7とを備えている。
As shown in FIG. 1, the stereo biopsy device 1 includes a mammography device 10 with the biopsy unit 2 attached thereto, a computer 8 connected to the mammography device 10, and a monitor 9 connected to the computer 8. And an input unit 7.
***画像撮影装置10は、図1に示すように、基台11と、基台11に対し上下方向(Z方向)に移動可能であり、かつ回転可能な回転軸12と、回転軸12により基台11と連結されたアーム部13を備えている。
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 be rotated. The arm part 13 connected with the base 11 is provided.
アーム部13はアルファベットのCの形をしており、その一端には撮影台14が、その他端には撮影台14と対向するように放射線照射部16が取り付けられている。アーム部13の回転及び上下方向の移動は、基台11に組み込まれたアームコントローラ31により制御される。
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.
撮影台14の内部には、フラットパネルディテクタ等の放射線検出器15と、放射線検出器15からの電荷信号の読み出しを制御する検出器コントローラ33が備えられている。また、撮影台14の内部には、放射線検出器15から読み出された電荷信号を電圧信号に変換するチャージアンプや、チャージアンプから出力された電圧信号をサンプリングする相関2重サンプリング回路や、電圧信号をデジタル信号に変換するAD変換部などが設けられた回路基板なども設置されている。
Inside the imaging table 14 are provided a radiation detector 15 such as a flat panel detector and a detector controller 33 that controls reading of a charge signal from the radiation detector 15. The imaging table 14 includes a charge amplifier that converts a charge signal read from the radiation detector 15 into a voltage signal, a correlated double sampling circuit that samples a voltage signal output from the charge amplifier, a voltage A circuit board provided with an AD conversion unit for converting a signal into a digital signal is also installed.
また、撮影台14はアーム部13に対し回転可能に構成されており、基台11に対してアーム部13が回転した時でも、撮影台14の向きは基台11に対し固定された向きとすることができる。
In addition, the imaging 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 imaging table 14 is fixed to the base 11. can do.
放射線検出器15は、放射線画像の記録と読出しを繰り返して行うことができるものであり、放射線の照射を直接受けて電荷を発生する、いわゆる直接型の放射線画像検出器を用いてもよいし、放射線を一旦可視光に変換し、その可視光を電荷信号に変換する、いわゆる間接型の放射線画像検出器を用いるようにしてもよい。
The radiation 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 a charge, 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.
また、放射線画像信号の読出方式としては、TFT(thin film transistor)スイッチをオン・オフされることによって放射線画像信号が読み出される、いわゆるTFT読出方式のものや、読取光を照射することによって放射線画像信号が読み出される、いわゆる光読出方式のものを用いることが望ましいが、これに限らずその他のものを用いるようにしてもよい。
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.
放射線照射部16の中には放射線源17と、放射線源コントローラ32が収納されている。放射線源コントローラ32は、放射線源17から放射線を照射するタイミングと、放射線源17における放射線発生条件(管電流(mA)、照射時間(ms)、管電流時間積(mAs)、管電圧(kV)等)を制御するものである。
A radiation source 17 and a radiation source controller 32 are accommodated in the radiation irradiation unit 16. The radiation source controller 32 irradiates the radiation from the radiation source 17 and the radiation generation conditions (tube current (mA), irradiation time (ms), tube current time product (mAs), tube voltage (kV) in the radiation source 17. Etc.).
また、アーム部13の中央部には、撮影台14の上方に配置されて***Mを押さえつけて圧迫する圧迫板18と、その圧迫板18を支持する支持部20と、支持部20を上下方向(Z方向)に移動させる移動機構19が設けられている。圧迫板18の位置、圧迫圧は、圧迫板コントローラ34により制御される。図3は、圧迫板18を上方から見た図であるが、同図に示すように、圧迫板18は、撮影台14と圧迫板18により***を固定した状態でバイオプシを行えるよう、約10×10cm四方の大きさの開口部5を備えている。
Further, in the central portion of the arm portion 13, a compression plate 18 that is disposed above the imaging table 14 and presses and compresses the breast M, a support portion 20 that supports the compression plate 18, and a support portion 20 that extends 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. FIG. 3 is a view of the compression plate 18 as viewed from above. As shown in FIG. 3, the compression plate 18 is about 10 so that biopsy can be performed with the breast fixed by the imaging table 14 and the compression plate 18. An opening 5 having a size of 10 cm square is provided.
バイオプシユニット2は、その基体部分が圧迫板18の支持部20の開口部5に差し込まれ、基体部分の下端がアーム部13に取り付けられることによって、ステレオバイオプシ装置1と機械的、電気的に接続されるものである。
The biopsy unit 2 is mechanically and electrically connected to the stereo biopsy device 1 by inserting the base portion of the biopsy unit 2 into the opening 5 of the support portion 20 of the compression plate 18 and attaching the lower end of the base portion to the arm portion 13. It is what is done.
バイオプシユニット2は、***を穿刺する生検針21を有し、着脱可能に構成された生検針ユニット22と、生検針ユニット22を支持する針支持部23と、針支持部23をレールに沿って移動させ、あるいは針支持部23を出し入れさせることにより、生検針ユニット22を図1から図3に示すX,Y及びZ方向に移動させる移動機構24とを備える。
The biopsy unit 2 includes a biopsy needle 21 that punctures the breast. The biopsy needle unit 22 is configured to be detachable, a needle support portion 23 that supports the biopsy needle unit 22, and the needle support portion 23 along the rail. A moving mechanism 24 that moves the biopsy needle unit 22 in the X, Y, and Z directions shown in FIGS. 1 to 3 by moving the needle support portion 23 in or out is provided.
生検針ユニット22の生検針21の先端の位置は、移動機構24が備える針位置コントローラ35により、3次元座標位置(x,y,z)として認識され、制御される。なお、図1における紙面垂直方向がX方向、図2における紙面垂直方向がY方向、図3における紙面垂直方向がZ方向である。
The position of the tip of the biopsy needle 21 of the biopsy needle unit 22 is recognized and controlled as a three-dimensional coordinate position (x, y, z) by a needle position controller 35 provided in the moving mechanism 24. 1 is the X direction, the paper vertical direction in FIG. 2 is the Y direction, and the paper vertical direction in FIG. 3 is the Z direction.
入力部7は、観察者による撮影条件や観察条件などの入力や操作指示の入力などを受け付けるものであり、たとえば、キーボードやマウスなどの入力デバイスによって構成されるものである。本実施形態においては、後述する放射線画像記憶部8bから読み出された左目用放射線画像と右目用放射線画像において、異常陰影や石灰化、病変等の所定のターゲットを指定して入力する機能を備える。
The input unit 7 accepts input of imaging 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 function for designating and inputting a predetermined target such as an abnormal shadow, calcification, or lesion in a radiographic image for a left eye and a radiographic image for a right eye read from a radiographic image storage unit 8b described later is provided. .
コンピュータ8は、中央処理装置(CPU)及び半導体メモリやハードディスクやSSD等のストレージデバイスなどを備えており、これらのハードウェアによって、図4に示すような制御部8a、放射線画像記憶部8b、表示制御部8c、視差量算出部8d、マーク付与部8e及び位置取得部8fが構成されている。
The computer 8 includes a central processing unit (CPU), a semiconductor memory, a storage device such as a hard disk and an SSD, and the like. With these hardware, a control unit 8a, a radiation image storage unit 8b, and a display as shown in FIG. A control unit 8c, a parallax amount calculation unit 8d, a mark provision unit 8e, and a position acquisition unit 8f are configured.
制御部8aは、各種のコントローラ31~35に対して所定の制御信号を出力し、システム全体の制御を行うものである。具体的な制御方法については後で詳述する。
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.
放射線画像記憶部8bは、放射線検出器15によって取得された撮影方向毎の放射線画像信号を予め記憶するものである。
The radiation image storage unit 8b stores a radiation image signal for each imaging direction acquired by the radiation detector 15 in advance.
表示制御部8cは、放射線画像記憶部8bから読み出された左目用放射線画像と右目用放射線画像の2枚の放射線画像信号に対して所定の処理を施した後、モニタ9に***Mのステレオ画像を表示させるものである。また図6に示すように後述するモニタ9に表示されたステレオ画像を構成する左目用放射線画像と右目用放射線画像にそれぞれ矢印形状のカーソルCを重ねて表示させるカーソル表示制御部としても機能し、後述する入力部7からの入力に応じてカーソルCの表示位置を左右方向(X方向)及び上下方向(Y方向)に変更することによってカーソルCを面内方向(X-Y方向)に移動させる。
The display control unit 8c performs predetermined processing on the two radiographic image signals of the left-eye radiographic image and the right-eye radiographic image read from the radiographic image storage unit 8b, and then performs stereo processing of the breast M on the monitor 9. An image is displayed. Further, as shown in FIG. 6, it also functions as a cursor display control unit for displaying a left-eye radiographic image and a right-eye radiographic image that constitute a stereo image displayed on the monitor 9 described later, with the arrow-shaped cursor C superimposed thereon, The cursor C is moved in the in-plane direction (XY direction) by changing the display position of the cursor C in the left-right direction (X direction) and the vertical direction (Y direction) in response to an input from the input unit 7 described later. .
視差量算出部8dは、入力部7により入力された所定のターゲットの視差量を算出するものである。視差量の算出は左目用放射線画像と右目用放射線画像の画像上で指定された所定のターゲットの座標値を検出し、左目用放射線画像と右目用放射線画像との間の所定のターゲットの位置のずれ量を算出することにより求めることができる。なお左目用放射線画像と右目用放射線画像とで構成されたステレオ画像が表示される表示面から飛び出す方向と引っ込む方向では、つまりクロスポイントの手前側と奥側では、左目用放射線画像と右目用放射線画像との間の所定のターゲットは逆方向にずれるので、視差量を算出するときには、ずれる方向も求めるものとする。なお視差量の算出方法はこれに限られるものではなく、公知の方法を使用することができる。
The parallax amount calculation unit 8 d calculates the parallax amount of a predetermined target input by the input unit 7. The parallax amount is calculated by detecting the coordinate value of a predetermined target designated on the left-eye radiographic image and the right-eye radiographic image, and calculating the position of the predetermined target between the left-eye radiographic image and the right-eye radiographic image. It can be obtained by calculating the amount of deviation. Note that the left-eye radiation image and the right-eye radiation are projected and retracted from the display surface on which the stereo image composed of the left-eye radiation image and the right-eye radiation image is displayed, that is, on the near side and the far side of the cross point. Since the predetermined target with respect to the image is shifted in the opposite direction, the direction of deviation is also obtained when calculating the amount of parallax. Note that the method of calculating the amount of parallax is not limited to this, and a known method can be used.
マーク付与部8eは、左目用放射線画像と右目用放射線画像の各々において、視差量算出部8dによって算出された所定のターゲットの視差量と同じ視差量を有するマークを付与するものである。なおマークを付与する方法については後で詳細に説明する。
The mark giving unit 8e gives a mark having the same parallax amount as the predetermined target parallax amount calculated by the parallax amount calculating unit 8d in each of the left-eye radiographic image and the right-eye radiographic image. A method for providing a mark will be described later in detail.
位置取得部8fは、ステレオ画像を構成する左目用放射線画像及び右目用放射線画像の各々において入力された所定のターゲットの位置情報を取得するものであり、具体的には左目用放射線画像及び右目用放射線画像内においてカーソルCが示す画素の位置情報を取得して、例えば、三角測量法により、カーソルCが指し示す異常陰影や石灰化、病変等のターゲットの3次元での位置情報を取得し、その位置情報を制御部8aに出力するものである。
The position acquisition unit 8f acquires position information of a predetermined target input in each of the left-eye radiographic image and the right-eye radiographic image constituting the stereo image, specifically, the left-eye radiographic image and the right-eye radiographic image. The position information of the pixel indicated by the cursor C in the radiographic image is acquired, and for example, the three-dimensional position information of the target such as an abnormal shadow, calcification, or lesion indicated by the cursor C is acquired by triangulation. The position information is output to the control unit 8a.
モニタ9は、コンピュータ8から出力された2つの放射線画像信号を用いて、撮影方向毎の放射線画像をそれぞれ2次元画像として表示することにより、ステレオ画像を表示するように構成されたものである。
The monitor 9 is configured to display a stereo image by using the two radiographic image signals output from the computer 8 to display the radiographic image for each imaging direction as a two-dimensional image.
ステレオ画像を表示する構成としては、たとえば、2つの画面を用いて2つの放射線画像信号に基づく放射線画像をそれぞれ表示させて、これらをハーフミラーや偏光グラスなどを用いることで一方の放射線画像は観察者の右目に入射させ、他方の放射線画像は観察者の左目に入射させることによってステレオ画像を表示する構成を採用することができる。
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.
または、たとえば、2つの放射線画像を所定の視差量だけずらして重ね合わせて表示し、これを偏光グラスで観察することでステレオ画像を生成する構成としてもよいし、もしくはパララックスバリア方式及びレンチキュラー方式のように、2つの放射線画像を立体視可能な3D液晶に表示することによってステレオ画像を生成する構成としてもよい。また、ステレオ画像を表示する装置と2次元画像を表示する装置とは別個に構成するようにしてもよいし、同じ画面上で表示できる場合には同じ装置として構成するようにしてもよい。
Alternatively, for example, two radiographic images may be displayed in a superimposed manner while being shifted by a predetermined amount of parallax, and a stereo image may be generated by observing the images 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. In addition, the device that displays a stereo image and the device that displays a two-dimensional image may be configured separately, or may be configured as the same device if they can be displayed on the same screen.
次に、ステレオバイオプシ装置1の作用について、図5に示すフローチャートを参照しながら説明する。
Next, the operation of the stereo biopsy device 1 will be described with reference to the flowchart shown in FIG.
まず、撮影台14の上に***Mが設置され、圧迫板18により***Mが所定の圧力によって圧迫される(S1)。
First, 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 (S1).
次に、入力部7おいて、撮影者によって種々の撮影条件が入力された後、撮影開始の指示が入力される(S2)。なお、このとき生検針ユニット22は、上方に待避しており、まだ***Mは穿刺されていない。
Next, in the input unit 7, after various shooting conditions are input by the photographer, an instruction to start shooting is input (S2). At this time, the biopsy needle unit 22 is retracted upward, and the breast M has not been punctured yet.
入力部7において撮影開始の指示があると(S2)、***Mのステレオ画像を構成する2枚の放射線画像のうちの1枚目の放射線画像の撮影が行われる(S3)。具体的には、まず、制御部8aが、予め設定されたステレオ画像の撮影のために、2つの異なる撮影方向がなす角度θ(以下、輻輳角θという)を読み出し、その読み出した輻輳角θの情報をアームコントローラ31に出力する。なお、本実施形態においては、このときの輻輳角θの情報として、輻輳角θを構成する撮影角度θ’=±15°すなわち輻輳角θ=30°が予め記憶されているものとするが、これに限らず、輻輳角θは、モニタ9にステレオ画像として表示された***Mを観察者が立体感を有する立体視画像として認識できる角度であればよく、たとえば、4°以上30°以下であれば如何なる角度を用いてもよい。
When there is an instruction to start imaging in the input unit 7 (S2), the first radiographic image out of the two radiographic images constituting the stereo image of the breast M is captured (S3). Specifically, first, the control unit 8a reads an angle θ (hereinafter referred to as a convergence angle θ) formed by two different shooting directions in order to capture a preset stereo image, and the read convergence angle θ. Is output to the arm controller 31. In the present embodiment, as the information of the convergence angle θ at this time, the imaging angle θ ′ = ± 15 ° that constitutes the convergence angle θ, that is, the convergence angle θ = 30 ° is stored in advance. The convergence angle θ is not limited to this, and may be any angle that allows the observer to recognize the breast M displayed as a stereo image on the monitor 9 as a stereoscopic image having a stereoscopic effect. Any angle may be used as long as it is present.
そして、アームコントローラ31において、制御部8aから出力された輻輳角θの情報が受け付けられ、アームコントローラ31は、この輻輳角θの情報に基づいて、図2に示すように、アーム部13が撮影台14に垂直な方向に対して+θ’回転するよう制御信号を出力する。すなわち、本実施形態においては、アーム部13を撮影台14に垂直な方向に対して+15°回転するよう制御信号を出力する。
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 the 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 + 15 ° with respect to a direction perpendicular to the imaging table 14.
そして、このアームコントローラ31から出力された制御信号に応じてアーム部13が、+15°だけ回転した状態において、制御部8aは、放射線源コントローラ32及び検出器コントローラ33に対して放射線の照射と放射線画像信号の読出しを行うよう制御信号を出力する。この制御信号に応じて、放射線源17から放射線が射出され、***Mを+15°方向から撮影した放射線画像が放射線検出器15によって検出され、検出器コントローラ33によって放射線画像信号が読み出され、その放射線画像信号に対して所定の信号処理が施された後、コンピュータ8の放射線画像記憶部8bに記憶される。
Then, in a state where the arm unit 13 is rotated by + 15 ° according to 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 imaging the breast M from the + 15 ° direction is detected by the radiation 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 8.
次に、***Mのステレオ画像を構成する2枚の放射線画像のうちの2枚目の放射線画像の撮影が行われる(S4)。具体的には、アームコントローラ31が、図2に示すように、アーム部13を撮影台14に垂直な方向に対して-θ’回転するよう制御信号を出力する。すなわち、本実施形態においては、アーム部13を撮影台14に垂直な方向に対して-15°回転するよう制御信号を出力する。
Next, the second radiographic image of the two radiographic images constituting the stereo image of the breast M is taken (S4). 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, the control signal is output so that the arm unit 13 is rotated by −15 ° with respect to the direction perpendicular to the imaging table 14.
そして、このアームコントローラ31から出力された制御信号に応じてアーム部13が-15°だけ回転した状態において、制御部8aは、放射線源コントローラ32及び検出器コントローラ33に対して放射線の照射と放射線画像の読出しを行うよう制御信号を出力する。この制御信号に応じて、放射線源17から放射線が射出され、***Mを-15°方向から撮影した放射線画像が放射線検出器15によって検出され、検出器コントローラ33によって放射線画像信号が読み出され、所定の信号処理が施された後、コンピュータ8の放射線画像記憶部8bに記憶される。
Then, in the state where the arm unit 13 is rotated by −15 ° 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 to read the image. In response to this control signal, radiation is emitted from the radiation source 17, a radiation image obtained by photographing the breast M from the −15 ° direction is detected by the radiation detector 15, and a radiation image signal is read by the detector controller 33. After the predetermined signal processing, the radiation image storage unit 8b of the computer 8 stores the signal.
次に、上述したようにして放射線画像記憶部8bに記憶された2枚の放射線画像の画像信号が表す画像すなわち左目用放射線画像及び右目用放射線画像の各々において、図6に示すように、観察者が入力部7を操作することによりカーソルCが所望するターゲットを指し示すようにカーソルCを移動させて、所望するターゲットとして例えばターゲットA1を指定する(S5)。このとき観察者がターゲットA1にカーソルCを合わせたときに例えばマウスを左クリックすることによりカーソルCが示すターゲットA1が入力される。
Next, in each of the images represented by the image signals of the two radiation images stored in the radiation image storage unit 8b as described above, that is, the left-eye radiation image and the right-eye radiation image, as shown in FIG. The operator operates the input unit 7 to move the cursor C so that the cursor C points to the desired target, and designates, for example, the target A1 as the desired target (S5). At this time, when the observer puts the cursor C on the target A1, for example, the target A1 indicated by the cursor C is input by left-clicking the mouse.
そして制御部8aはターゲットが決定したか否か、すなわちターゲットが入力されたか否かを判別し(S6)、ターゲットが入力されていない場合(S6;NO)には、ステップS5に処理を移行してターゲットが入力されるまで以降の処理を繰り返し行う。
一方、ターゲットが入力されている場合(S6;YES)には、視差量算出部8dが、上述したようにして入力部7により入力されたターゲットA1の視差量を算出する(S7)。 Then, thecontrol unit 8a determines whether or not the target has been determined, that is, whether or not the target has been input (S6). If the target has not been input (S6; NO), the process proceeds to step S5. The subsequent processing is repeated until the target is input.
On the other hand, when the target is input (S6; YES), the parallaxamount calculation unit 8d calculates the parallax amount of the target A1 input by the input unit 7 as described above (S7).
一方、ターゲットが入力されている場合(S6;YES)には、視差量算出部8dが、上述したようにして入力部7により入力されたターゲットA1の視差量を算出する(S7)。 Then, the
On the other hand, when the target is input (S6; YES), the parallax
次にマーク付与部8eが、左目用放射線画像と右目用放射線画像の各々において、視差量算出部8dによって算出されたターゲットA1の視差量と同じ視差量を有するマークを付与する(S8)。
Next, the mark assigning unit 8e assigns a mark having the same amount of parallax as the parallax amount of the target A1 calculated by the parallax amount calculating unit 8d in each of the left-eye radiographic image and the right-eye radiographic image (S8).
マークの付与は、図7に示すように、左目用放射線画像と右目用放射線画像の各々において、入力部7により入力されたターゲットA1の位置を中心とした四角形の枠で構成されたマークB1の画像を合成する。これによりマークB1はターゲットA1と同じ視差を有することになる。
As shown in FIG. 7, the mark is applied to the mark B1 configured by a square frame centered on the position of the target A1 input by the input unit 7 in each of the left-eye radiographic image and the right-eye radiographic image. Composite the images. As a result, the mark B1 has the same parallax as the target A1.
次に表示制御部8cが、マークB1がそれぞれ付与された左目用放射線画像と右目用放射線画像の2枚の放射線画像信号に対して所定の処理を施した後、モニタ9にステレオ画像として表示する(S9)。
Next, the display control unit 8c performs a predetermined process on the two radiographic image signals of the left-eye radiographic image and the right-eye radiographic image each provided with the mark B1, and then displays the stereo image on the monitor 9. (S9).
ここで図8にステレオ画像表示したときの位置関係を説明する図を示す。ここで図中上側を観察者が位置する手前側、図中下側を奥行側として説明する。マークB1がそれぞれ付与された左目用放射線画像と右目用放射線画像で構成されたステレオ画像を観察者が立体視すると、ターゲットA1とマークB1は視差量が同じであるため、図8に示すようにターゲットA1と同じ奥行位置にマークB1が位置することになる。
Here, FIG. 8 shows a diagram for explaining the positional relationship when a stereo image is displayed. Here, the upper side in the figure will be described as the near side where the observer is located, and the lower side in the figure will be described as the depth side. When the observer stereoscopically views a stereo image composed of the left-eye radiological image and the right-eye radiographic image each provided with the mark B1, the target A1 and the mark B1 have the same amount of parallax, and as shown in FIG. The mark B1 is positioned at the same depth position as the target A1.
本実施形態では、観察者は上述したように30°の輻輳角で撮影された左目用放射線画像及び右目用放射線画像で構成されたステレオ画像を立体視することになるので、図12に示すように、観察者がマークを立体視するときには、観察者は図12中矢印方向に左右の視線をそれぞれ移動させ、寄り目をしてマークが1つに見えるように融像を行う。
In this embodiment, the observer stereoscopically views the stereo image composed of the left-eye radiographic image and the right-eye radiographic image captured at the 30 ° convergence angle as described above, as shown in FIG. In addition, when the observer stereoscopically views the mark, the observer moves the left and right line of sight in the direction of the arrow in FIG. 12, and performs fusion so that the mark looks as if it is crossed.
本実施形態のマークB1は四角形で構成されているため、図13に示すように、観察者が寄り目をするときに、それぞれの縦線(1)が(3)、(2)が(4)に重なるように立体視を行うため、例えば異常陰影や石灰化、病変等の形状がはっきりとしていない可能性があるターゲットと比較して、各辺がはっきりとした線で構成されているマークB1は視線を合わせる領域が広いので容易に焦点を合わせることができる。
Since the mark B1 of the present embodiment is formed of a quadrangle, as shown in FIG. 13, when the observer crosses the eyes, the vertical lines (1) are (3) and (2) are (4). In order to perform stereoscopic viewing so as to overlap with each other, for example, a mark B1 that is formed by a line with a clear side compared to a target that may not have a clear shape such as abnormal shadow, calcification, or lesion is Since the line-of-sight area is wide, focusing can be performed easily.
通常、図8のようなターゲットの位置関係をしたステレオ画像を観察者が立体視するときは、手前側の位置するターゲットA2に焦点が合い易い。しかしながら、ターゲットA2が、異常陰影や石灰化、病変等である場合には、観察者は、ターゲットA2よりも、はっきりとした形状で構成されたマークB1に焦点を合わせ易い。そこで、本実施形態のように焦点を合わせたいターゲットA1の位置に、はっきりとした形状で構成されたマークB1を付与することで、マークB1は観察者が立体視するときの奥行方向に対する目の調節を補助することができる。マークB1の奥行方向の位置に焦点が合えば、ターゲットA1と同じ奥行方向の位置にあるので焦点を容易に移動させて合わせることができる。
Normally, when a viewer stereoscopically views a stereo image having a target positional relationship as shown in FIG. 8, it is easy to focus on the target A2 located on the near side. However, when the target A2 is an abnormal shadow, calcification, lesion, or the like, the observer can focus on the mark B1 having a clearer shape than the target A2. Therefore, by providing the mark B1 having a clear shape at the position of the target A1 to be focused as in the present embodiment, the mark B1 is an eye for the depth direction when the observer stereoscopically views. Can assist adjustment. If the focus is on the position in the depth direction of the mark B1, the focus can be easily moved and adjusted because it is in the same depth direction position as the target A1.
また観察者がターゲットA1を立体視し易くなることにより、作業の効率が上がると共に観察者の疲労を軽減することができる。
Also, since it becomes easier for the observer to stereoscopically view the target A1, work efficiency can be improved and fatigue of the observer can be reduced.
またターゲットA1の位置の奥行方向上すなわち図8の上下方向に、例えばターゲットA2等の目に付くような領域がある場合であっても観察者はマークB1を融像することによりターゲットA1を立体視し易くすることができる。
Further, even when there is an area that is conspicuous, such as the target A2, on the depth direction of the position of the target A1, that is, in the vertical direction in FIG. 8, the observer can make the target A1 three-dimensional by fusing the mark B1. Easy to see.
また観察者が複数存在する場合であっても、融像すべき対象が同一のマークB1なので、全ての観察者がマークB1に焦点を合わせることにより同じ箇所を立体視することができる。
Also, even when there are a plurality of observers, the object to be fused is the same mark B1, so that all observers can stereoscopically view the same part by focusing on the mark B1.
また観察者がマークB1を融像することにより合わせた立体視の焦点と実際に立体視したい場所が異なる場合には、マークB1の存在によって奥行方向の位置が認識し易くなっているため観察者は異なっていることにすぐに気づくことができる。
In addition, when the stereoscopic focus obtained by fusing the mark B1 by the observer is different from the place where the stereoscopic vision is actually desired, the position in the depth direction is easily recognized by the presence of the mark B1, so that the observer can recognize it. Can quickly notice that they are different.
そして次に位置取得部8fが、例えば観察者によりキーボードのエンターキーが押されること等により観察者が所望するターゲットが決定されたか否かを判別する(S10)。ターゲットが決定されていないと判別した場合(S10;NO)は、ステップS5へ処理を移行してステップS5以降の処理を繰り返し行う。
Next, the position acquisition unit 8f determines whether or not the target desired by the observer has been determined by, for example, pressing the enter key of the keyboard by the observer (S10). If it is determined that the target has not been determined (S10; NO), the process proceeds to step S5, and the processes after step S5 are repeated.
一方、ターゲットが決定されたと判別した場合(S10;YES)は、位置取得部8fがこの決定されたターゲットの位置座標すなわちカーソルCが示す画素の位置座標を取得する(S11)。
On the other hand, when it is determined that the target has been determined (S10; YES), the position acquisition unit 8f acquires the determined position coordinates of the target, that is, the position coordinates of the pixel indicated by the cursor C (S11).
位置取得部8fは、左目用放射線画像及び右目用放射線画像内でカーソルCがそれぞれ示す対応画素の座標位置(x2,y2)、(x3,y3)を取得し、その取得した座標位置に基づき、例えば、三角測量法により、カーソルCが示す画素の3次元位置座標(x1,y1,z1)を取得する。
The position acquisition unit 8f acquires the coordinate positions (x2, y2) and (x3, y3) of the corresponding pixels indicated by the cursor C in the left-eye radiographic image and the right-eye radiographic image, and based on the acquired coordinate positions, For example, the three-dimensional position coordinates (x1, y1, z1) of the pixel indicated by the cursor C are acquired by triangulation.
位置取得部8fは、取得したカーソルCが示す画素の3次元位置座標(x1,y1,z1)すなわちターゲットの3次元座標位置(x1,y1,z1)をバイオプシユニット2の針位置コントローラ35に出力する。
The position acquisition unit 8f outputs the three-dimensional position coordinates (x1, y1, z1) of the pixel indicated by the acquired cursor C, that is, the three-dimensional coordinate position (x1, y1, z1) of the target to the needle position controller 35 of the biopsy unit 2. To do.
入力部7において所定の操作ボタンが押されると、制御部8aから針位置コントローラ35に対し、生検針21を移動させる制御信号が出力される。針位置コントローラ35は、先に入力された3次元座標位置(x1,y1,z1)に基づき、生検針21の先端が、3次元座標位置(x1,y1,z1+α)に配置されるように、生検針21を移動する。ここでαは、生検針21が***Mに刺さらない程度に十分大きな値とする。これにより、生検針21がターゲットの上方にセットされる。
When a predetermined operation button is pressed in the input unit 7, a control signal for moving the biopsy needle 21 is output from the control unit 8 a to the needle position controller 35. Based on the previously input three-dimensional coordinate position (x1, y1, z1), the needle position controller 35 is arranged so that the tip of the biopsy needle 21 is arranged at the three-dimensional coordinate position (x1, y1, z1 + α). The biopsy needle 21 is moved. Here, α is set to a sufficiently large value such that the biopsy needle 21 does not pierce the breast M. Thereby, the biopsy needle 21 is set above the target.
観察者により、生検針21の穿刺を指示する所定の操作が入力部7において行われると、制御部8aと針位置コントローラ35の制御の下で、生検針21の先端が3次元座標位置(x1,y1,z1)に移動させられて、生検針21による***Mの穿刺が行われる(S12)。このようにしてステレオバイオプシ装置1はバイオプシを行う。
When a predetermined operation for instructing the biopsy needle 21 to be punctured by the observer is performed on the input unit 7, the tip of the biopsy needle 21 is controlled by the three-dimensional coordinate position (x1) under the control of the control unit 8a and the needle position controller 35. , Y1, z1), and the biopsy needle 21 punctures the breast M (S12). In this way, the stereo biopsy device 1 performs biopsy.
以上の述べた通り、ステレオバイオプシ装置1によれば、左目用放射線画像と右目用放射線画像の各々において、入力されたターゲットA1の視差量を算出し、左目用放射線画像と右目用放射線画像の各々に、算出された視差量と同じ視差量を有するマークB1を付与するので、奥行き方向が深く、入力されたターゲットA1が融像し難い位置にあったとしても、異常陰影や石灰化、病変等の形状がはっきりとしていない可能性があるターゲットと比較して、予め設定された形状で構成されているマークB1の方が、観察者は焦点を合わせ易い。それ故に、マークB1は観察者が立体視するときの奥行方向に対する目の調節を補助することができる。マークB1の奥行方向の位置に焦点が合えば、入力されたターゲットA1は同じ奥行方向の位置にあるので、焦点を容易に移動させて合わせることができて、ターゲットA1を立体視し易くすることができる。
As described above, according to the stereo biopsy device 1, the parallax amount of the input target A1 is calculated in each of the left-eye radiation image and the right-eye radiation image, and each of the left-eye radiation image and the right-eye radiation image is calculated. Since the mark B1 having the same amount of parallax as the calculated amount of parallax is given, even if the depth direction is deep and the input target A1 is difficult to fuse, abnormal shadows, calcification, lesions, etc. Compared with a target whose shape may not be clear, the mark B1 configured with a preset shape is easier for the observer to focus. Therefore, the mark B1 can assist the adjustment of the eyes with respect to the depth direction when the observer stereoscopically views. If the position of the mark B1 in the depth direction is in focus, the input target A1 is in the same depth direction position, so that the focus can be easily moved and adjusted so that the target A1 can be viewed stereoscopically. Can do.
また観察者がターゲットA1を立体視し易くなることにより、作業の効率が上がると共に観察者の疲労を軽減することができる。
Also, since it becomes easier for the observer to stereoscopically view the target A1, work efficiency can be improved and fatigue of the observer can be reduced.
またターゲットA1の位置の奥行方向上に、目に付くような領域がある場合であっても観察者はマークB1を融像することによりターゲットA1を立体視し易くすることができる。
In addition, even when there is an eye-catching region in the depth direction of the position of the target A1, the observer can make the target A1 stereoscopically viewable by fusing the mark B1.
また観察者が複数存在する場合であっても、融像すべき対象が同一のマークB1なので、全ての観察者がマークB1に焦点を合わせることにより同じ箇所を立体視することができる。
Also, even when there are a plurality of observers, the object to be fused is the same mark B1, so that all observers can stereoscopically view the same part by focusing on the mark B1.
また観察者がマークB1を融像することにより合わせた立体視の焦点と実際に立体視したい場所が異なる場合には、マークB1の存在によって奥行方向の位置が認識し易くなっているため観察者はすぐに異なっていることに気づくことができる。
In addition, when the stereoscopic focus obtained by fusing the mark B1 by the observer is different from the place where the stereoscopic vision is actually desired, the position in the depth direction is easily recognized by the presence of the mark B1, so that the observer can recognize it. You can quickly notice that it is different.
なお本実施形態においてマーク付与部8eは、上記のようにターゲットA1の位置を中心とした四角形の枠で構成されたマークB1を付与するものとしたが、本発明はこれに限られるものではない。
In the present embodiment, the mark imparting unit 8e imparts the mark B1 configured by the quadrangular frame centered on the position of the target A1 as described above, but the present invention is not limited to this. .
例えば図9に示すように、左目用放射線画像と右目用放射線画像の各々においてターゲットA1の位置から水平方向へ同じ距離だけ移動させた位置にマークB1を付与してもよい。この場合、観察者が立体視するときに、マークB1の奥行方向の位置に焦点が合えば、入力されたターゲットA1は視差量が同じことにより、同じ奥行方向の位置にあるので焦点を容易に移動させて合わせることができ、ターゲットA1を立体視し易くすることができる。これにより上述した実施形態と同様の効果を得ることができる。なお、よりターゲットA1を立体視し易くするためには、マークB1をターゲットA1により近い位置に付与することが好ましい。
For example, as shown in FIG. 9, the mark B <b> 1 may be provided at a position moved by the same distance in the horizontal direction from the position of the target A <b> 1 in each of the left-eye radiographic image and the right-eye radiographic image. In this case, when the observer stereoscopically views, if the focus is in the position in the depth direction of the mark B1, the input target A1 has the same amount of parallax, and thus is in the same depth direction. The target A1 can be easily stereoscopically viewed by moving it. Thereby, the same effect as the above-described embodiment can be obtained. In order to make the target A1 easier to stereoscopically view, the mark B1 is preferably provided at a position closer to the target A1.
また図10に示すように左目用放射線画像と右目用放射線画像の各々においてターゲットA1の位置から垂直方向へ同じ距離だけ移動させた位置にマークB1を付与してもよい。
この場合、観察者が立体視するときに、マークB1の奥行方向の位置に焦点が合えば、入力されたターゲットA1は視差量が同じことにより、同じ奥行方向の位置にあるので焦点を容易に移動させて合わせることができ、ターゲットA1を立体視し易くすることができる。これにより上述した実施形態と同様の効果を得ることができる。なおよりターゲットA1を立体視し易くするためには、マークB1をターゲットA1により近い位置に付与することが好ましい。 Further, as shown in FIG. 10, the mark B1 may be provided at a position moved in the vertical direction by the same distance from the position of the target A1 in each of the left-eye radiographic image and the right-eye radiographic image.
In this case, when the observer stereoscopically views, if the focus is in the position in the depth direction of the mark B1, the input target A1 has the same amount of parallax, and thus is in the same depth direction. The target A1 can be easily stereoscopically viewed by moving it. Thereby, the same effect as the above-described embodiment can be obtained. In order to make the target A1 easier to stereoscopically view, it is preferable to apply the mark B1 to a position closer to the target A1.
この場合、観察者が立体視するときに、マークB1の奥行方向の位置に焦点が合えば、入力されたターゲットA1は視差量が同じことにより、同じ奥行方向の位置にあるので焦点を容易に移動させて合わせることができ、ターゲットA1を立体視し易くすることができる。これにより上述した実施形態と同様の効果を得ることができる。なおよりターゲットA1を立体視し易くするためには、マークB1をターゲットA1により近い位置に付与することが好ましい。 Further, as shown in FIG. 10, the mark B1 may be provided at a position moved in the vertical direction by the same distance from the position of the target A1 in each of the left-eye radiographic image and the right-eye radiographic image.
In this case, when the observer stereoscopically views, if the focus is in the position in the depth direction of the mark B1, the input target A1 has the same amount of parallax, and thus is in the same depth direction. The target A1 can be easily stereoscopically viewed by moving it. Thereby, the same effect as the above-described embodiment can be obtained. In order to make the target A1 easier to stereoscopically view, it is preferable to apply the mark B1 to a position closer to the target A1.
また図11に示すように、左目用放射線画像と右目用放射線画像の各々において***Mの領域以外にマークB1を付与してもよい。
Further, as shown in FIG. 11, a mark B1 may be given in addition to the breast M region in each of the left-eye radiographic image and the right-eye radiographic image.
この場合、マークB1の色は***Mの背景の色(本実施形態では黒)とは異なる濃度(本実施形態では白)で生成する。これにより背景が均一な黒なのでマークB1は目に付き易く、焦点を合わせ易い。またこの場合でも、観察者が立体視するときに、マークB1の奥行方向の位置に焦点が合えば、入力されたターゲットA1は視差量が同じことにより、同じ奥行方向の位置にあるので焦点を容易に移動させて合わせることができ、ターゲットA1を立体視し易くすることができる。これにより上述した実施形態と同様の効果を得ることができる。なお、よりターゲットA1を立体視し易くするためには、マークB1をターゲットA1により近い位置に付与することが好ましい。
In this case, the color of the mark B1 is generated with a density (white in this embodiment) different from the background color of the breast M (black in this embodiment). As a result, since the background is uniform black, the mark B1 is easily noticeable and easily focused. Even in this case, if the observer focuses on the position of the mark B1 in the depth direction, the input target A1 has the same amount of parallax, and therefore has the same depth direction. It can be easily moved and matched, and the target A1 can be easily stereoscopically viewed. Thereby, the same effect as the above-described embodiment can be obtained. In order to make the target A1 easier to stereoscopically view, it is preferable to apply the mark B1 to a position closer to the target A1.
なお上述した実施形態においてマーク付与部8eは、四角形の枠で構成されたマークB1を付与するものとしたが、本発明はこれに限られるものではなく、マークは、例えば丸の枠やひし形、星型等様々な形状の枠で構成することができる。またマークは枠に限られるものではなく、中身が塗り潰されたものであっても構わない。
In the embodiment described above, the mark imparting unit 8e imparts the mark B1 configured by a quadrangular frame. However, the present invention is not limited to this, and the mark may be, for example, a round frame, a rhombus, It can be composed of a frame of various shapes such as a star shape. Further, the mark is not limited to the frame, and the content may be filled.
またマークB1は、立体視し易くするために、左目用放射線画像と右目用放射線画像の各々において、同じマークにすることが好ましい。またマークB1は、立体視可能にするために、垂直方向(図6,図7,図9のy軸方向)は左目用放射線画像と右目用放射線画像で同じ位置にすることが好ましい。
The mark B1 is preferably the same mark in each of the left-eye radiographic image and the right-eye radiographic image in order to facilitate stereoscopic viewing. The mark B1 is preferably positioned at the same position in the left-eye radiographic image and the right-eye radiographic image in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) in order to enable stereoscopic viewing.
また左目用放射線画像と右目用放射線画像とで入力されたターゲットA1の垂直方向(図6,図7,図9のy軸方向)の位置が異なる場合には、どちらか一方の放射線画像において入力されたターゲットA1の垂直方向の位置にマークB1を付与してもよい。また左目用放射線画像と右目用放射線画像の両方で入力されたターゲットA1の垂直方向の平均値の位置にマークB1を付与してもよい。
If the position of the target A1 in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) is different between the left-eye radiographic image and the right-eye radiographic image, the input is made in either one of the radiographic images. The mark B1 may be provided at a position in the vertical direction of the target A1. Further, the mark B1 may be added to the position of the average value in the vertical direction of the target A1 input in both the left-eye radiographic image and the right-eye radiographic image.
また上述した実施形態では、マークB1は、左目用放射線画像と右目用放射線画像で垂直方向(図6,図7,図9のy軸方向)は同じ位置に付与するものとしたが、例えば左目用放射線画像と右目用放射線画像とで入力されたターゲットA1の垂直方向(図6,図7,図9のy軸方向)の位置が異なる場合には、入力されたターゲットA1の垂直方向の位置に合わせてマークB1を付与するようにしてもよい。すなわちマークB1の垂直方向を左目用放射線画像と右目用放射線画像で異なる位置にしても構わない。この場合、立体視はできないが、入力されたターゲットA1の位置すなわち実際に立体視したい場所が異なっていることに気づくことができる。
In the above-described embodiment, the mark B1 is provided at the same position in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) in the left-eye radiographic image and the right-eye radiographic image. When the position of the target A1 input in the vertical direction (y-axis direction in FIGS. 6, 7, and 9) is different between the radiographic image for right eye and the radiographic image for right eye, the position of the input target A1 in the vertical direction The mark B1 may be given according to the above. That is, the vertical direction of the mark B1 may be set at different positions for the left-eye radiographic image and the right-eye radiographic image. In this case, although the stereoscopic view is not possible, it is possible to notice that the position of the input target A1, that is, the place where the stereoscopic view is actually desired is different.
なお、上記説明では、***Mを被写体として説明したが、被写体は特に限定されるものではなく、たとえば、胸部や頭部などを被写体として撮影し、最も白く表示される位置に生検針を穿刺するステレオバイオプシ装置にも適用可能である。
In the above description, the breast M has been described as a subject. However, the subject is not particularly limited. For example, a breast or head is photographed as a subject, and a biopsy needle is punctured at the position displayed most white. The present invention can also be applied to a stereo biopsy device.
また上記実施形態では、ステレオバイオプシ装置について説明したが、本発明はこれに限られるものではなく、バイオプシ機能の搭載されていない立体視画像表示装置にも適用可能である。バイオプシ機能の搭載されていない本発明の立体視画像表示装置では、観察者が立体視画像において病変等の関心領域をターゲティングするときにターゲットを立体視し易くすることができる。
In the above embodiment, the stereo biopsy device has been described. However, the present invention is not limited to this, and the present invention is also applicable to a stereoscopic image display device that is not equipped with a biopsy function. In the stereoscopic image display device of the present invention that is not equipped with a biopsy function, the target can be easily viewed stereoscopically when the observer targets a region of interest such as a lesion in the stereoscopic image.
また本発明は、被写体として***を撮影する放射線画像撮影表示装置に限らず、たとえば、胸部や頭部などを撮影する放射線画像撮影表示装置にも適用することができる。
The present invention can be applied not only to a radiographic image display device that images a breast as a subject but also to a radiographic image display device that images a chest or a head.
また本発明は、上述した実施形態の内容に限られるものではなく、発明の趣旨を逸脱しない範囲において適宜変更することができる。
Further, the present invention is not limited to the contents of the above-described embodiments, and can be appropriately changed without departing from the spirit of the invention.
Claims (14)
- 少なくとも2方向の撮影方向から被写体へ放射線を照射することにより取得された複数の放射線画像を用いて立体視可能な立体視画像を表示する表示部と、
前記複数の放射線画像の各々において、所定のターゲットを入力する入力部と、
該入力部により入力された前記所定のターゲットの視差量を算出する視差量算出部と、
前記複数の放射線画像の各々に、前記視差量算出部によって算出された視差量と同じ視差量を有するマークを付与するマーク付与部とを備えていることを特徴とする立体視画像表示装置。 A display unit that displays a stereoscopically viewable image using a plurality of radiation images acquired by irradiating the subject with radiation from at least two imaging directions;
In each of the plurality of radiation images, an input unit for inputting a predetermined target;
A parallax amount calculation unit that calculates the parallax amount of the predetermined target input by the input unit;
A stereoscopic image display device comprising: a mark providing unit that applies a mark having the same parallax amount as the parallax amount calculated by the parallax amount calculating unit to each of the plurality of radiation images. - 前記マーク付与部が、前記入力部によって入力された前記所定のターゲットの位置から、垂直方向又は水平方向に移動した位置に前記マークを付与するものであることを特徴とする請求項1記載の立体視画像表示装置。 2. The three-dimensional object according to claim 1, wherein the mark giving unit gives the mark to a position moved in a vertical direction or a horizontal direction from the position of the predetermined target input by the input unit. Visual image display device.
- 前記マーク付与部が、前記複数の放射線画像中の特定の被写体領域以外に前記マークを付与するものであることを特徴とする請求項1記載の立体視画像表示装置。 2. The stereoscopic image display device according to claim 1, wherein the mark applying unit applies the mark to a region other than the specific subject area in the plurality of radiation images.
- 前記マークが、前記複数の放射線画像中の特定の被写体領域以外の背景の濃度とは異なる濃度で生成されていることを特徴とする請求項1~3いずれか1項記載の立体視画像表示装置。 The stereoscopic image display device according to any one of claims 1 to 3, wherein the mark is generated at a density different from a density of a background other than a specific subject area in the plurality of radiation images. .
- 前記マークが、四角形であることを特徴とする請求項1~4いずれか1項記載の立体視画像表示装置。 The stereoscopic image display device according to any one of claims 1 to 4, wherein the mark is a quadrangle.
- 前記マークが、前記入力部によって入力された前記所定のターゲットの位置を中心とした枠であることを特徴とする請求項1記載の立体視画像表示装置。 2. The stereoscopic image display apparatus according to claim 1, wherein the mark is a frame centered on the position of the predetermined target input by the input unit.
- 前記枠が四角形であることを特徴とする請求項6記載の立体視画像表示装置。 The stereoscopic image display device according to claim 6, wherein the frame is a quadrangle.
- 少なくとも2方向の撮影方向から被写体へ放射線を照射することにより取得された複数の放射線画像を用いて立体視可能な立体視画像を表示する立体視画像表示方法において、
前記複数の放射線画像の各々において、入力された所定のターゲットの視差量を算出し、
前記複数の放射線画像の各々に、前記算出された視差量と同じ視差量を有するマークを付与することを特徴とする立体視画像表示方法。 In a stereoscopic image display method for displaying a stereoscopically viewable image using a plurality of radiation images acquired by irradiating a subject with radiation from at least two photographing directions,
In each of the plurality of radiographic images, an input parallax amount of a predetermined target is calculated,
A stereoscopic image display method, wherein a mark having the same amount of parallax as the calculated amount of parallax is assigned to each of the plurality of radiation images. - 前記入力された所定のターゲットの位置から、垂直方向又は水平方向に移動した位置に前記マークを付与することを特徴とする請求項8記載の立体視画像表示方法。 The stereoscopic image display method according to claim 8, wherein the mark is given to a position moved in a vertical direction or a horizontal direction from the position of the inputted predetermined target.
- 前記複数の放射線画像中の特定の被写体領域以外に前記マークを付与することを特徴とする請求項8記載の立体視画像表示方法。 The stereoscopic image display method according to claim 8, wherein the mark is added to a region other than the specific subject region in the plurality of radiation images.
- 前記マークを、前記複数の放射線画像中の特定の被写体領域以外の背景の濃度とは異なる濃度で生成することを特徴とする請求項8~10いずれか1項記載の立体視画像表示方法。 The stereoscopic image display method according to any one of claims 8 to 10, wherein the mark is generated at a density different from a density of a background other than a specific subject area in the plurality of radiation images.
- 前記マークが、四角形であることを特徴とする請求項8~11いずれか1項記載の立体視画像表示方法。 12. The stereoscopic image display method according to claim 8, wherein the mark is a quadrangle.
- 前記マークが、前記入力された所定のターゲットの位置を中心とした枠であることを特徴とする請求項8記載の立体視画像表示方法。 The stereoscopic image display method according to claim 8, wherein the mark is a frame centered on the position of the input target.
- 前記枠が四角形であることを特徴とする請求項13記載の立体視画像表示方法。 The stereoscopic image display method according to claim 13, wherein the frame is a quadrangle.
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JPH0730927A (en) * | 1993-07-14 | 1995-01-31 | Fujita Corp | Stereoscopic vision video display method |
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JPS568039A (en) * | 1979-06-30 | 1981-01-27 | Tokyo Shibaura Electric Co | Xxray fluoroscopy tomograph apparatus |
JPH0730927A (en) * | 1993-07-14 | 1995-01-31 | Fujita Corp | Stereoscopic vision video display method |
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