WO2006006601A1 - X線画像診断装置 - Google Patents
X線画像診断装置 Download PDFInfo
- Publication number
- WO2006006601A1 WO2006006601A1 PCT/JP2005/012852 JP2005012852W WO2006006601A1 WO 2006006601 A1 WO2006006601 A1 WO 2006006601A1 JP 2005012852 W JP2005012852 W JP 2005012852W WO 2006006601 A1 WO2006006601 A1 WO 2006006601A1
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- Prior art keywords
- ray
- image
- diaphragm
- display
- diagnostic imaging
- Prior art date
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- 239000002131 composite material Substances 0.000 claims description 64
- 230000000007 visual effect Effects 0.000 claims description 38
- 238000002059 diagnostic imaging Methods 0.000 claims description 25
- 238000003780 insertion Methods 0.000 claims description 21
- 230000037431 insertion Effects 0.000 claims description 21
- 230000008859 change Effects 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 8
- 230000004397 blinking Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 28
- 230000007246 mechanism Effects 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000002594 fluoroscopy Methods 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 1
- 230000001079 digestive effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000002601 radiography Methods 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 231100000216 vascular lesion Toxicity 0.000 description 1
Classifications
-
- 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
- A61B6/06—Diaphragms
-
- 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
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
- A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
-
- 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
- A61B6/46—Arrangements for interfacing with the operator or the patient
- A61B6/467—Arrangements for interfacing with the operator or the patient characterised by special input means
- A61B6/469—Arrangements for interfacing with the operator or the patient characterised by special input means for selecting a region of interest [ROI]
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
Definitions
- the present invention relates to an X-ray diagnostic imaging apparatus effective for improving the operability of an X-ray diaphragm.
- An X-ray diaphragm device that limits the X-ray irradiation field is used in an X-ray fluoroscopic imaging apparatus (for example, JP-A-8-266535, JP-A-2003-116845).
- This imaging apparatus irradiates X-rays emitted from an X-ray tube device onto a subject lying on a table via an X-ray diaphragm device, and the X-rays transmitted through the subject are image intensifiers. It is detected with an X-ray flat panel detector and visualized and displayed on a monitor.
- the diaphragm device drives the diaphragm blades on the top, bottom, left and right to block X-rays other than the region of interest out of the X-rays emitted from the X-ray tube device.
- the field of view after the insertion of the X-ray diaphragm is changed, or the area around the field of view, that is, the area shielded by the X-ray diaphragm is required to be observed. It is necessary to check the situation outside the area.
- the status of the area where the X-ray diaphragm is inserted cannot be recognized because it is not displayed on the monitor. Therefore, after opening the X-ray diaphragm and checking the status of the area other than the visual field area on the monitor, the visual field area must be changed by controlling the X-ray diaphragm to the desired area.
- An object of the present invention is to provide an X-ray image diagnostic apparatus in which the operability of the X-ray diaphragm is improved.
- the X-ray image diagnostic apparatus of the present invention controls an X-ray generator that irradiates a subject with X-rays, and an irradiation region of the X-rays irradiated from the X-ray generator to the subject.
- An X-ray diaphragm device configured to be capable of interlocking three or more diaphragm blades, an operation information storage means for storing operation information for operating the X-ray diaphragm device in a predetermined control mode, and the memory
- the aperture operation device for controlling the operation of the X-ray aperture device according to the operated operation information, and the transmitted X-ray of the subject passing through the opening formed by the operation-controlled X-ray aperture device are image data.
- an X-ray detector that outputs the image data and a display that displays the output image data.
- the X-ray diaphragm can be efficiently operated by controlling three or more diaphragm blades so as to be interlocked with each other. As a result, the amount of exposure to the subject can be minimized.
- the X-ray fluoroscopic apparatus of the present embodiment controls an X-ray tube 1 that is an X-ray source and an irradiation range of X-rays emitted from the X-ray tube 1.
- An aperture device 2 and an X-ray flat panel detector (FPD) 3 that detects an X-ray passing through the subject through the X-ray aperture device 2 and forms an image.
- the X-ray tube 1 and the X-ray diaphragm 2 constitute an X-ray generation unit and are attached to one end of a support mechanism 4 such as a C-type arm, and the FPD 3 is attached to the other end of the C-type arm.
- a movable table 5 on which the subject 7 is placed is provided between the X-ray tube 1 and the FPD 3, and the region of interest of the subject 7 is positioned by turning the C-type arm and sliding the table 5. .
- An image visualized by the FPD 3 is displayed on a display (monitor) 6.
- An image intensifier (I, L) and a TV camera may be used instead of FPD.
- the X-ray diaphragm device 2 used in the X-ray fluoroscopic apparatus includes a total of four diaphragm blades 20 (21, 22, 23, 24).
- the diaphragm blade 20 with lead plate as the main material is the most important blade that sets the X-ray irradiation field to the minimum X-ray irradiation range necessary for diagnosis.
- Each of the upper, lower, left, and right diaphragm blades 21 to 24 is arranged in a frame shape as shown in FIG. 3, and is independently driven by a motor (not shown).
- the current positions of the diaphragm blades 21 to 24 are detected by blade position detection means (not shown) and output as position data.
- the wing position detection means is performed, for example, by detecting the rotational position of the motor. This rotation position can be detected, for example, by using a stepping motor or by detecting the rotation position of the motor using a hall element.
- the X-ray irradiation field is confirmed without irradiating X-rays by visual observation of the light irradiation field from the lamp 25 provided in the X-ray diaphragm device (FIG. 2).
- the light emitted from the lamp 25 is reflected by the mirrors 26 and 27, the irradiation range is limited by the diaphragm blade 20, and the light irradiation field obtained by the light flux passing through the diaphragm blade 20 is visually observed.
- the lamp 25 is turned on by a lighting switch 28.
- the console 8 controls the operation of the X-ray diaphragm 2, the diaphragm actuator 9, the pivoting of the support mechanism 4, the support mechanism controller 10, the table controller 11 that controls the slide of the table 5, and the X-ray It has an X-ray irradiation switch 12 that controls irradiation.
- the aperture controller 9 has a joystick shape as shown in FIG. In other words, it has an operating rod 31 that is erected from the console 8, and this operating rod 31 is configured to be freely tiltable in any direction of 360 °, and operates the selected diaphragm blade in accordance with the tiltable direction. be able to. Further, a push switch 32 is provided at the tip of the operation rod 31, and the control mode of the selected diaphragm blades is sequentially switched depending on the number of times the push switch 32 is pressed.
- FIG. 5 shows a functional block diagram of the diaphragm device.
- the signal input from the operating device 9 is converted into a necessary control signal by the operating device control unit 41 and input to the aperture control unit 42.
- the aperture control unit 42 operates the drive motor for the aperture blade 20 that operates the aperture blade 20 or selects the selected aperture.
- the indicator 44 is arranged in a frame shape on each side of the monitor 6 that displays an X-ray fluoroscopic image, and is composed of lights that are lit in the direction of the selected diaphragm blade.
- information on which position the diaphragm blade 20 has been moved is output from the diaphragm control unit 42 to the X-ray detector 3 (here, FPD) and the image processing unit 43, and the information on the region limited by the diaphragm blade 20 is output.
- the image is controlled to be displayed on the monitor 6.
- Figure 6 (A) — (D) shows the screen of monitor 6 with indicator 44 installed.
- a small thick frame in the screen is a region of interest, and a frame-shaped indicator 44 is provided at the periphery of the monitor display screen.
- the indicator 4 4 is configured so that each side corresponding to the selected diaphragm blade can be lit.
- the upper diaphragm blade is selected, the upper side 44U of the indicator lights (Fig. 6 (B)), and when the left diaphragm blade is selected, the left side 44L of the indicator lights (Fig. 6 (C)).
- the lower diaphragm blade is selected, the lower side 44D of the indicator lights up.
- the right diaphragm blade is selected, the right side 44R of the indicator lights up.
- the left diaphragm blade control mode 52 is entered, and the left side 46L of the indicator is lit as shown in FIG. 6 (C).
- the left diaphragm blade can be operated by tilting the operation rod 31 left and right.
- push switch 32 is pressed three times to set all blades (position change) control mode 55.
- the size of the region of interest composed of the blades is not changed, and only the position is controlled so as to move in any direction according to the operation of the operation rod 31.
- the operator can grasp the mode by lighting all the indicators 44 on the four sides.
- the same display as the indicator 44 may be performed at an appropriate position on the image.
- the indicators on the four sides may blink in the all-blade (position change) control mode and always light in the all-blade (size change) control mode. Or, display with different power error depending on the control mode.
- the push switch 32 is integrated with the operation rod 31. The same effect can be obtained even if the push switch 32 and the operation rod 31 are provided separately from each other. For example, by using a foot switch instead of the push switch 32, the operation device 9 can be further reduced.
- Figure 8 shows the relationship between the operating direction of the operating rod and the moving direction of the diaphragm blades.
- control mode is the upper blade control mode
- the diaphragm blade 2 1 moves in the direction of the thick arrow.
- the left, lower and right wings do not move.
- the left blade, lower blade, and right blade control modes when the operating rod is tilted in the direction shown in the figure, only the corresponding diaphragm blade moves in the direction of the arrow.
- FIG. 9 is a block diagram showing the control system of the diaphragm blades.
- the memory of the diaphragm control unit 42 (see FIG. 5) stores a table 62 corresponding to FIG. 8 in which the control mode, the operation direction of the operation rod, and the movement direction of each diaphragm blade are associated with each other.
- the switch corresponding to the tilted direction is entered among the switches connected to the operating rod, and the operating direction is changed.
- the signal shown is input to the CPU 61 of the aperture control unit 42.
- the CPU 61 receives a signal from the operation rod 31 and refers to the table 62, and outputs a drive signal for driving the aperture blade corresponding to the selected control mode and the operation direction of the operation rod to the motor Ml-M4.
- the control rod is tilted and controlled to move in the direction of the thick arrow while the switch is on.
- each diaphragm blade stops at that position when all the switches connected to the operating rod are cut.
- the arrangement direction of the filaments 28 of the lamp 25 is set to 45 ° with respect to the longitudinal directions of the diaphragm blades 21 to 24.
- a lamp uses a filament as its light source.
- This filament has a certain length, and conventionally, the filament was arranged along one of the diaphragm blades with the longitudinal direction of the filament aligned.
- the filaments 28 are arranged so as to have an angle of 45 ° with respect to all the diaphragm blades 21 to 24. Therefore, as shown in Fig. 11 (C), the width Bxy where blurring occurs in the X and Y directions can be made uniform, the contour of the light irradiation field is clarified, and the X-ray irradiation field is made easier. Can be confirmed.
- FIG. 12 is a schematic functional configuration diagram of the X-ray image diagnostic apparatus of the present embodiment.
- This X-ray diagnostic imaging apparatus includes an X-ray generator 1 that emits X-rays toward a subject 7 , an X-ray diaphragm 2 that defines an X-ray irradiation range, and an X-ray that passes through the subject 7 An X-ray detector 3 for displaying the image and a monitor 6 for displaying the photographed X-ray image.
- the X-ray generator 1 has an X-ray tube that generates X-rays.
- the X-ray generator 1 emits X-rays when a predetermined voltage is applied from the high voltage generation device 100.
- the diaphragm blades are inserted into the X-ray irradiation field by operating the diaphragm blades, thereby defining the field area.
- the insertion position of the diaphragm blades of the X-ray diaphragm 2 is detected by the insertion position information detection means and output to the display area calculation means 103 described later.
- the X-ray detector 3 may be anything that can convert X-rays into image data!
- an X-ray flat panel detector (FPD) was used.
- the X-rays that have passed through the subject 7 are converted into visible image data by the FPD control unit and output as digital image data.
- the output image data is stored in the image memory and updated sequentially for each frame.
- This image memory includes an entire visual field storage means 101 described later.
- the X-ray generator 1 and the X-ray detector 3 are supported by support means (not shown), and these positions are configured to be movable with respect to the subject 7 as necessary. Yes.
- the X-ray fluoroscopic image output as image data by the X-ray detector 3 is displayed on the monitor 6 in real time.
- the X-ray image diagnostic apparatus of the present embodiment includes the entire visual field region storage means 101, the composite image creation means 102, and the display area calculation means 103.
- the entire visual field storage means 101 stores a fluoroscopic image of the entire visual field before the X-ray diaphragm 2 is inserted.
- the composite image creation means 102 includes an entire visual field area image stored in the full visual field storage means 101 and an X-ray aperture. 2 is inserted, and the current fluoroscopic image is added by luminance to create a composite image.
- the display area calculation means 103 calculates a necessary area of the composite image from the insertion position of the X-ray diaphragm 2 and displays it on the monitor 6 in an enlarged manner.
- the X-ray generator 3 is roughly aligned with the target region of the procedure (hereinafter referred to as "affected site").
- X-rays transmitted through the subject 7 are imaged by the X-ray detector 3 and converted into image data by the FPD control unit, and this image data is recorded and updated in the image memory as needed during X-ray irradiation. Is done.
- the final image at this stage may be stored in the entire visual field storage means 101 as a fluoroscopic image of the entire visual field before the X-ray stop 2 is inserted.
- the entire visual field storage means 101 stores image data output from the X-ray detector 3 before the insertion of the X-ray diaphragm 2 is started. To do.
- the visual field region is determined by inserting the X-ray stop 2 into a desired region.
- a composite image is created.
- the composite image creating unit 102 displays the entire field area before the X-ray diaphragm 2 stored in the entire field-of-view area storage unit 101 is inserted.
- the image and the image data output from the X-ray detector 3 when the control command for changing the insertion position of the X-ray aperture 2 is input are added to create a composite image.
- the control command for changing the insertion position is input, for example, when the full blade (position change) control mode 55 is selected in FIG.
- FIGS. 13A to 13C are schematic explanatory diagrams showing an image composition operation in the composite image creating means 102.
- FIG. FIG. 13A shows the entire chest image data (full-field image 201) output from the X-ray detector before the X-ray diaphragm is inserted.
- the outer frame represents the maximum display area of the monitor 6, and in this example, the entire visual field image 201 is displayed over the entire display area of the monitor. This image data is stored in the entire visual field storage means 101 and can be read out as necessary.
- FIG. 13B shows a part of the chest output from the X-ray detector 3 when a control command for changing the insertion position of the X-ray diaphragm 2 is input.
- Image data (field-of-view area image 202) is shown. From these two pieces of image data, the composite image creating means 102 creates composite image data as shown in FIG. 13C.
- the composite image is an image in which the field-of-view area image is superimposed on the entire field-of-view area image.
- the ratio of luminance addition of both images (Figs. 13A and 13B) when the composite image data is created by the composite image creation means 102, the overlap of the images in the X-ray aperture when the composite image is displayed on the monitor 6 is explained. Depending on the condition, it can be changed in advance, for example, one-to-one or one-to-two. In the case of 1: 1, the image 202 is displayed twice as brightly as the image 201 in FIG. 2C.
- the display area calculation means 103 receives the insertion position information in the image from the X-ray diaphragm 2 and the surgeon is defined by the insertion of the X-ray diaphragm 2 among the composite images created by the composite image creation means 102.
- the optimal image area that helps to change and control the viewing area is displayed on the monitor 6.
- FIGS. 14A and 14B are schematic explanatory diagrams for illustrating the operation of calculating the display image area.
- the image in FIG. 14A is a composite image created by the composite image creation means 102 corresponding to FIG. 13C.
- the display area calculation means 103 sets the display target area outside the position Rin in the image, for example, up to the position Rext in the figure.
- the display position is determined from the composite image according to the position information from the upper blade, the lower blade, and the left blade of the X-ray diaphragm, and displayed on the monitor 6.
- the extent to which the X-ray stop insertion position is set as the display target area is determined in advance by the inspection target area.
- Fig. 14B is an enlarged view of the calculated display area in the maximum display area of the monitor.
- FIGS. 15A and 15B are schematic diagrams for explaining the operation of displaying a composite image on the display means.
- FIG. 15A shows a composite image displayed in the maximum display area of the monitor before the X-ray aperture retracting operation is performed. Now, let the portion displayed on the monitor in the X-ray aperture inserted from the left side of the image be Lin. Then, when the X-ray aperture 2 is controlled during the composite image display, the display area calculation means performs the entire image indicated by Dimg. The display area is calculated so that the ratio of the insertion part Lin of the X-ray diaphragm 2 to the area is always constant, and only the necessary area is displayed on the monitor 6.
- FIG. 15B is a diagram illustrating a state after the left blade of the X-ray diaphragm 2 is controlled to be retracted.
- the display area is calculated so that the ratio of the aperture insertion portion Lin relative to the entire image area Dimg before the evacuation control and the ratio of the aperture insertion portion Lin 'relative to the entire image area Dimg ′ after the evacuation control are the same.
- the surgeon can change the position of the diaphragm while viewing the composite image displayed up to the outer area. Therefore, it is possible to check the status of the area other than the current visual field area smoothly without opening the X-ray aperture 2 and irradiating the subject with a wide range of X-rays and checking the entire visual field image.
- X-ray aperture 2 can be operated.
- the example in which the fluoroscopic image data immediately before the X-ray diaphragm is inserted is used as the image data stored in the entire visual field storage unit 101. You can also create a composite image using the image data that was taken.
- FIG. 16 is a schematic functional configuration diagram of the apparatus. Note that the description of the same components as those in FIG. 12 is omitted, and differences will be mainly described.
- the current fluoroscopic image output from the X-ray detector 3 is normally displayed on the monitor 6.
- the surgeon inputs a composite image start signal from the image display selection means 104.
- a composite image is created by the composite image creation means 102 according to the same procedure as in FIG. 12, and the composite image is displayed on the monitor 6.
- surgeon can arbitrarily select and display the fluoroscopic image on the monitor 6 by switching with the image display selection means 104. For example, even when the X-ray diaphragm 2 is being operated, the current fluoroscopic image output from the X-ray detector 3 can be displayed on the monitor 6 as it is.
- the output image from the X-ray detector 3 is always displayed on the monitor 6, and the composite image is displayed on the monitor 6 by the image display selection means 104 according to the operator's instruction, and then for a certain time. So that the current fluoroscopic image output from X-ray detector 3 is displayed again after It may be.
- FIG. 17 is a schematic functional configuration diagram of the apparatus.
- the perspective image output from the X-ray detector 3 is displayed on the monitor 6 and the synthesized image is created by the synthesized image creating means 102 as in FIG. .
- the composite image is displayed on the composite image display means 105 different from the monitor 6. Therefore, the surgeon can control the X-ray aperture 2 while comparing the two images of the current fluoroscopic image displayed on the monitor 6 and the composite image displayed on the composite image display means 105.
- a plurality of windows may be provided in the monitor, and the current fluoroscopic image (normal fluoroscopic image) 301 and composite image 302 may be displayed in each window.
- the current fluoroscopic image (normal fluoroscopic image) 301 and composite image 302 may be displayed in each window.
- the display contents of the main window and the display contents of the sub-window may be switched to enable display. According to this configuration, the current fluoroscopic image and the synthesized image can be observed simultaneously on a single monitor.
- the apparatus configuration in this case is the same as in FIG. 16, but the image display selection means 104 selects whether to display the composite image in the main window or the sub window.
- FIG. 19 is a schematic functional configuration diagram of the apparatus. The description of the same components as those in FIG. 12 will be omitted, and the description will focus on the differences.
- This X-ray diagnostic imaging apparatus uses a bed 5 on which a subject is placed, an X-ray generator 1 that irradiates X-rays toward the subject 7, and X-rays that have passed through the subject 7.
- the bed 5 can be moved up and down, left and right, and back and forth while the subject is placed.
- each part is detected by the motion sensing means 106.
- the support means 107 includes a C arm having an X-ray generator 1 at one end and an X-ray detector 3 at the other end, and a horizontal and Z or vertical movement that moves the c arm horizontally and Z or vertically.
- a drive mechanism In addition, it has a circular movement mechanism that slides the c-arm along the arc of the arm and a rotation mechanism that rotates the c-arm around the horizontal axis. The operations of these units are also detected by the operation sensing means 106.
- the functions of the X-ray generator 1 and the X-ray detector 3 and the point that the synthesized image is created and the predetermined range can be displayed on the monitor 6 are other embodiments. Is the same.
- the composite image created by the composite image creation means 102 is displayed on the monitor 6.
- the motion sensing means 106 stops displaying the composite image created by the composite image creation means 102 on the monitor 6,
- the current fluoroscopic image output from X-ray detector 3 is displayed.
- the motion detection means 106 detects the control end signal of the bed 5 or the support means 107 during X-ray irradiation, the entire visual field area storage means 101 once opens the X-ray stop 2 and X-ray detection.
- the full-field fluoroscopic image output from the output device 3 is updated and stored.
- the composite image storage unit 102 creates a composite image of the entire visual field perspective image stored and updated in the full visual field region storage unit 101 and the current fluoroscopic image output from the X-ray detector 3. And this composite image is displayed on the monitor 6.
- the operability of the X-ray diaphragm can be improved if three or more diaphragm blades can be interlocked with a single operating device. More preferably, all the diaphragm blades can be interlocked with one controller. [0067] Further, by making the reference for linking the diaphragm blades not limited to the center of the maximum irradiation field, the size and position of the region of interest can be selected more freely.
- the operation device is preferably a tiltable switch such as a joystick.
- the operating device is a tiltable switch that tilts the operating rod in any direction and operates the diaphragm blades in response to the tilted direction.
- the diaphragm blades can be controlled with good operability by controlling the diaphragm blades to move in the tilted direction.
- a selection switch for selecting a combination of diaphragm blades operated by a retractable switch.
- the selection switch it is more preferable to provide an indicator indicating the selected diaphragm blade.
- a push switch may be provided on the operating shaft head of the tiltable switch. What is necessary is just to comprise so that the aperture blade selected sequentially may be switched by pushing this switch in multiple times.
- An example of this operation mode switching is ⁇ upper blade ⁇ left blade ⁇ lower blade ⁇ right blade ⁇ all blades (irradiation field position change) ⁇ all blades (irradiation field size change) ⁇ operation prohibition ⁇ upper blade '' Is mentioned.
- the selection switch may be provided independently instead of being provided integrally with the retractable switch, or may be a switch other than the push switch.
- a foot switch can be a selection switch.
- the indicator is selected, and any configuration can be used as long as the aperture blade can be displayed.
- a configuration in which a frame-shaped lighting member consisting of four sides (upper, lower, left, and right) is provided on the outer periphery of a monitor screen that displays a fluoroscopic image, and the diaphragm blades that are selected when the side that lights up is selected is conceivable.
- Lamps and LEDs can be used as lighting members.
- the aperture blades selected with characters or figures may be displayed on the screen.
- a light projection lamp indicating an X-ray irradiation field is provided, and the light emission source of this lamp is for each side of the light irradiation field defined by the diaphragm blades. It is desirable to be provided with an inclination of 45 °.
- a filament is used as the light source of the lamp.
- this light source With an inclination of 45 ° with respect to each side of the light field defined by the diaphragm blades, the length of the filament along each side (projection) Long) is constant. Therefore, The blurring near all sides in the field can be made common, and the X-ray field can be accurately grasped.
- the diaphragm of the X-ray diagnostic imaging apparatus of the present embodiment can be used for any X-ray apparatus that requires control of the X-ray irradiation range.
- any general imaging apparatus can be used as well as a DR (Digital Radiography) apparatus that measures an X-ray image as a digital image.
- DR Digital Radiography
- the X-ray diagnostic imaging apparatus is capable of displaying a composite image obtained by combining the image of the visual field area after insertion of the X-ray diaphragm and the image of the entire visual field area before insertion of the X-ray diaphragm.
- the field of view can be moved quickly by reducing the amount of exposure of the subject.
- the X-ray diagnostic imaging apparatus of the present embodiment switches and displays the fluoroscopic image of the entire visual field and the current fluoroscopic image, so that the operator can check the state of the region other than the visual field at any time. be able to.
- the X-ray diagnostic imaging apparatus includes a composite image display unit that displays only the composite image created by the composite image creation unit, in addition to the display unit, so that the surgeon can view the visual field image. In addition to this, it is possible to confirm the state of the region other than the visual field region at all times, and to accurately move the visual field region.
- the X-ray diagnostic imaging apparatus updates the fluoroscopic image of the entire visual field region with the relative movement of the bed, the X-ray generator, and the X-ray detector. It is possible to confirm the area other than the visual field area in the composite image.
- the apparatus of the present invention can be suitably used as a medical X-ray image diagnostic apparatus.
- FIG. 1 is a schematic configuration diagram of an X-ray image diagnostic apparatus according to the present embodiment.
- Figure 2 is a schematic diagram of the diaphragm device.
- FIG. 3 is a diagram showing the arrangement of aperture blades.
- FIG. 4 is a perspective view showing the operating device of the diaphragm device of the present invention.
- FIG. 5 is a functional block diagram of the diaphragm device of the present invention.
- FIGS. 6A to 6D are diagrams schematically showing a monitor screen on which an indicator is installed.
- FIG. 7 is a diagram showing an example of the control mode switching order in the diaphragm device of the present embodiment.
- FIG. 8 is a diagram showing the relationship among the control mode, the operating direction of the operating rod, and the moving direction of the aperture blade in the aperture stop device of this embodiment. .
- FIG. 9 is a block diagram showing a control system of a diaphragm blade.
- FIG. 10 is a schematic diagram showing the positional relationship between the diaphragm blades and the lamp filament used in the diaphragm device of the present embodiment.
- FIGS. 11 (A) to 11 (C) are explanatory diagrams showing the blur of the light irradiation field when the orientation of the filament is parallel, perpendicular, and 45 ° to the diaphragm blade.
- FIG. 12 is a schematic configuration diagram of an example of the X-ray image diagnostic apparatus according to the present embodiment.
- FIG. 13A is a schematic explanatory view showing an image composition operation in the composite image creating means.
- FIG. 13B is a schematic explanatory view showing an image composition operation in the composite image creating means.
- FIG. 13C is a schematic explanatory view showing an image composition operation in the composite image creating means.
- FIG. 14A is a schematic explanatory diagram showing the operation of display image calculation in the display area calculation means.
- FIG. 14B is a schematic explanatory diagram showing the operation of display image calculation in the display area calculation means.
- FIG. 15A is a schematic explanatory diagram showing an operation of displaying a composite image on the display means.
- FIG. 15B is a schematic explanatory view showing an operation of displaying a composite image by the display means.
- FIG. 16 is a schematic configuration diagram of another example of the X-ray image diagnostic apparatus of the present embodiment.
- FIG. 17 is a schematic configuration diagram of another example of the X-ray image diagnostic apparatus of the present embodiment.
- FIG. 18 is a schematic diagram when a normal fluoroscopic image and a composite image are simultaneously displayed on a monitor.
- FIG. 19 is a schematic configuration diagram of another example of the X-ray image diagnostic apparatus of the present embodiment.
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- Life Sciences & Earth Sciences (AREA)
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- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
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- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
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Abstract
Description
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Priority Applications (1)
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JP2006529064A JP4812053B2 (ja) | 2004-07-13 | 2005-07-12 | X線画像診断装置 |
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JP2004-206527 | 2004-07-13 | ||
JP2004206527 | 2004-07-13 | ||
JP2004-209183 | 2004-07-15 | ||
JP2004209183 | 2004-07-15 |
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WO2006006601A1 true WO2006006601A1 (ja) | 2006-01-19 |
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PCT/JP2005/012852 WO2006006601A1 (ja) | 2004-07-13 | 2005-07-12 | X線画像診断装置 |
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JP (1) | JP4812053B2 (ja) |
WO (1) | WO2006006601A1 (ja) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008000220A (ja) * | 2006-06-20 | 2008-01-10 | Toshiba Corp | X線診断装置、その制御方法及びプログラム |
JP2010187812A (ja) * | 2009-02-17 | 2010-09-02 | Hitachi Medical Corp | 医用寝台装置 |
JP2012245103A (ja) * | 2011-05-26 | 2012-12-13 | Toshiba Corp | X線診断装置 |
WO2013051356A1 (ja) * | 2011-10-07 | 2013-04-11 | 株式会社 東芝 | X線診断装置 |
JP2014004357A (ja) * | 2012-06-25 | 2014-01-16 | General Electric Co <Ge> | 画像表示方法 |
JP2014217615A (ja) * | 2013-05-09 | 2014-11-20 | 株式会社東芝 | X線診断装置 |
JP2020130239A (ja) * | 2019-02-13 | 2020-08-31 | キヤノンメディカルシステムズ株式会社 | X線診断装置及びコンソール装置 |
Citations (5)
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JPS5596143A (en) * | 1979-01-19 | 1980-07-22 | Tokyo Shibaura Electric Co | Xxray positioning device |
JPS57157945U (ja) * | 1981-03-31 | 1982-10-04 | ||
JPH06142097A (ja) * | 1992-11-06 | 1994-05-24 | Hitachi Medical Corp | X線診断装置 |
JP2004089699A (ja) * | 2002-07-08 | 2004-03-25 | Toshiba Corp | X線診断装置およびx線画像の収集方法 |
JP2004105568A (ja) * | 2002-09-20 | 2004-04-08 | Toshiba Corp | X線診断装置 |
-
2005
- 2005-07-12 JP JP2006529064A patent/JP4812053B2/ja not_active Expired - Fee Related
- 2005-07-12 WO PCT/JP2005/012852 patent/WO2006006601A1/ja active Application Filing
Patent Citations (5)
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JPS5596143A (en) * | 1979-01-19 | 1980-07-22 | Tokyo Shibaura Electric Co | Xxray positioning device |
JPS57157945U (ja) * | 1981-03-31 | 1982-10-04 | ||
JPH06142097A (ja) * | 1992-11-06 | 1994-05-24 | Hitachi Medical Corp | X線診断装置 |
JP2004089699A (ja) * | 2002-07-08 | 2004-03-25 | Toshiba Corp | X線診断装置およびx線画像の収集方法 |
JP2004105568A (ja) * | 2002-09-20 | 2004-04-08 | Toshiba Corp | X線診断装置 |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008000220A (ja) * | 2006-06-20 | 2008-01-10 | Toshiba Corp | X線診断装置、その制御方法及びプログラム |
JP2010187812A (ja) * | 2009-02-17 | 2010-09-02 | Hitachi Medical Corp | 医用寝台装置 |
JP2012245103A (ja) * | 2011-05-26 | 2012-12-13 | Toshiba Corp | X線診断装置 |
WO2013051356A1 (ja) * | 2011-10-07 | 2013-04-11 | 株式会社 東芝 | X線診断装置 |
JP2013090912A (ja) * | 2011-10-07 | 2013-05-16 | Toshiba Corp | X線診断装置 |
US8903041B2 (en) | 2011-10-07 | 2014-12-02 | Kabushiki Kaisha Toshiba | X-ray diagnostic apparatus |
US9131908B2 (en) | 2011-10-07 | 2015-09-15 | Kabushiki Kaisha Toshiba | X-ray diagnostic apparatus |
JP2014004357A (ja) * | 2012-06-25 | 2014-01-16 | General Electric Co <Ge> | 画像表示方法 |
JP2014217615A (ja) * | 2013-05-09 | 2014-11-20 | 株式会社東芝 | X線診断装置 |
JP2020130239A (ja) * | 2019-02-13 | 2020-08-31 | キヤノンメディカルシステムズ株式会社 | X線診断装置及びコンソール装置 |
JP7321718B2 (ja) | 2019-02-13 | 2023-08-07 | キヤノンメディカルシステムズ株式会社 | X線診断装置及びコンソール装置 |
Also Published As
Publication number | Publication date |
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JP4812053B2 (ja) | 2011-11-09 |
JPWO2006006601A1 (ja) | 2008-04-24 |
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