JP3432270B2 - Digital X-ray equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION The present invention relates to an X-ray tube around a subject.
The subject is moved from multiple directions by moving the
Digital X-ray apparatus for imaging or fluoroscopy, especially
Rotational stereoscopic imaging of the diagnostic part of the subject with one device
By taking common control of normal fluoroscopy and capturing each image
Digital radiography system capable of performing shadows
You. [0002] 2. Description of the Related Art In recent years, for example, Japanese Unexamined Patent Publication No.
As shown, the X-ray tube device and
X-rays are emitted to the subject while rotating the imaging system.
X-ray imaging by detecting a transmitted X-ray image and diagnosing the subject
X-ray rotation stereoscopic imaging device that can observe
It is spreading. This X-ray rotary stereoscopic imaging device is installed on the floor.
The subject table is placed horizontally at the approximate center of the upright section
A gantry body having an opening for insertion into the
Provided rotatable around the opening in the gantry body
And the ring-shaped rotating support
An X-ray tube device for attaching the subject to X-rays,
The X-ray tube device is disposed on the rolling support so as to face the X-ray tube device.
The line image is converted into an optical image and the output optical image is taken.
Video device that converts the
These video signals are digitized and this digital
An image processing apparatus that processes signals to form an image;
Display to input image signal from image processing device and display image
And a device to be inspected by the rotation of the rotation support device.
Displays animated images of surrounding parts of the body
To be viewed as a stereoscopic image. And
In this type of device, for example, examination and diagnosis of circulatory diseases, etc.
In a single injection of contrast agent to the subject
X-ray images from all directions can be obtained, and
Vascular lesions can be quickly identified.
And the amount of contrast agent injected into the subject can be reduced.
There are advantages. [0003] However, the above-mentioned X-ray rotary stereoscopic photographing apparatus is used.
The X-ray tube and the imaging system
Multiple images taken at different shooting angles
Of the images, the most accurate blood desired by the operator or doctor
One image of a specific imaging angle is obtained by capturing the lesion of the duct
Only. At this time, the one image is used as a still image.
Even if you try to display and observe,
Motion blur caused by the
Move the imaging system from the subject to avoid colliding with the sample
Due to enlarged blur caused by shooting at a distance
Image is blurred compared to the image
And it is not enough to make a more precise diagnosis. [0004] From the above, the X-ray rotation stereoscopic imaging
In a diagnostic system using a shadow device, for example, a blood vessel
Combined with other X-ray equipment for precise diagnosis of lesion
It was common to be. With other X-ray equipment
For example, it has a C-arm type support,
The X-ray tube device and the imaging device face each other
Is arranged, and the X-ray tube device and the image system are connected to a C-arm.
Rotate by a suitable angle around the subject with the mold support,
As an X-ray fluoroscopic image of a state in which a contrast agent is injected into the subject
An X-ray fluoroscope for observation has been used. And
Rotational stereoscopic imaging of a subject by the X-ray rotary stereoscopic imaging apparatus
The location of the vascular lesion and its condition
After grasping the observable imaging angle, the X-ray fluoroscope
Set the shooting angle using
System to contact a subject to capture precise images
Approach was taken. [0005] However, such a problem is not solved.
Combining conventional X-ray rotation stereoscopic imaging equipment with X-ray fluoroscopic imaging equipment
X-ray rotation stereoscopic imaging of the subject
The information of the optimal shooting angle obtained by the
To the X-ray fluoroscope, which is the
Because there is no means to reproduce the degree,
In order to make a precise diagnosis of the position, the above X-ray fluoroscopy
Angle setting of the C-arm type support of the device by manual operation
I had to reproduce the optimal shooting angle. This
In order to confirm the diagnostic site of the subject,
A small amount of contrast agent is injected into the subject under fluoroscopy,
It is necessary to fine-tune the shooting angle while looking at the visual image
Met. Therefore, it can be compared by rotating stereoscopic photography.
Even if a vascular lesion is quickly confirmed,
Time to reproduce the optimal shooting angle for precise diagnosis
In addition, the operation was troublesome. this thing
As a result, the examination time as a whole becomes longer and the
X-ray exposure also increased. Therefore, the present invention addresses such a problem.
In one device, the three-dimensional
Shooting and normal fluoroscopy are controlled in common to
Digital X-ray equipment that can take images
The purpose is to provide. [0007] [MEANS FOR SOLVING THE PROBLEMS] To achieve the above object
In addition, the digital radiography apparatus according to the present inventionInstalled on the floor
Of the placed gantry bodyAlmost in the centerFormedSubject table
Opening for horizontal insertion of cablePart ofCan rotate around
Noh was providedRing-shapedMounted on a rotating support
The subject is irradiated with X-rays by the first X-ray tube apparatus,
Imaging device arranged opposite to the first X-ray tube device on the holder
The transmitted X-ray image of the subjectConverts to an optical image and
Shoots the output optical image of the video signalTo the above-mentioned subject
Support for rotating stereoscopic photography for rotating stereoscopic photography around
The apparatus and the object table along the longitudinal direction and the width direction.
Movably provided with both ends sandwiching the subject table
It can be pinched and extended and freely movable around the subject.
X-ray tube device attached to one end of a bent arm
Irradiates the subject with X-rays at the other end of the arm.
Is located opposite to the X-ray tube device and can approach and retreat from the subject
The transmitted X-ray image of the subject is captured by the imaging system
This output optical image is converted into an optical image,
signalTo the above-mentioned subject, with the arm stopped.
A fluoroscopic support device for performing fluoroscopic imaging of,Above times
Image device and support for fluoroscopy of the support device for inversion stereography
Processes video signals from the imaging system of the device to form an image
Image processing device and an image signal from the image processing device
One or more display devices for inputting and displaying images,Up
The rotation operation of the rotation support device of the support device for rotating stereoscopic photography is controlled.
A rotation control device that controls the
Arm control device that controls the movement of the
To control the operation of each of the above components
ToA series of images taken with the support device for rotating stereoscopic photography
Selected from the images of
Reads the shooting angle information of the selected image from the image processing device
And send it to the arm control unit, where
To automatically set the arm of the fluoroscope support device
Comprises a central processing unit for computing and controllingSystem control unit
And [0008] The digital X-ray apparatus constructed as described above
Gantry bodyStands for
Formed in the centerRotatably provided around the opening
WasRing-shapedFirst X-ray tube attached to rotary support
The subject is irradiated with X-rays by the device,
The subject is inspected by an imaging system that is placed opposite the X-ray tube
X-ray image ofThis output optical image is converted into an optical image and
Shooting the video signalAnd rotate it around the subject.
Inverted stereoscopic photography is performed.
Extends around the subject table and surrounds the subject.
Attached to one end of an arm that can be moved freely
The subject is irradiated with X-rays by the second X-ray tube device,
At the other end of the arm, it was arranged to face the second X-ray tube device
The transmitted X-ray image of the subject is captured by the imaging system.Convert to optical image
The output optical image is taken and the video signalConvert to
And fluoroscopic imaging of the subject with the arm stopped
DoIn the image processing device, the support device for rotating
Image-based device and support device for fluoroscopy
Process the video signal to compose an image, and the display device
An image signal is input from the image processing device and displayed as an image,Times
The rotation support device of the support device for the above-mentioned rotation stereoscopic imaging by the rotation control device
The rotation of the camera is controlled by the arm control device
Controlling the movement of the arm of the support device,Central processing unit
Consist ofSystem control unitByOperation command from actuator
To control the operation of each of the above componentsAlong with
A series of images taken with the support device for rotating stereoscopic photography
The image selected by the selection command input from the actuator
Reads out the shooting angle information of the image from the image processing device and sets the arm
To the control unit, andPerspective shooting at shooting angle position
It operates to automatically set the arm of the shadow support device.
This makes it possible to perform rotational stereoscopic imaging around the subject, for example,
After confirming the lesion, a detailed diagnosis by normal fluoroscopy
Setting and reproduction of the shooting angle for easy and quick execution
You. [0009] BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described in detail. FIG. 1 shows a digital radiograph according to the present invention.
FIG. 2 is a system block diagram showing the entire configuration of the shadow device;
2 is a front view showing a specific structure example. This digital
A single X-ray imaging device
And control the rotation stereoscopic photography and the normal fluoroscopy in common.
Each image is taken, as shown in FIG.
Rotating stereoscopic imaging support device 1 and perspective imaging support device 2
, Image processing device 3, display device 4, rotation control device 5
Arm control device 6, system control device 7, operation
And a vessel 8. [0010] The support device 1 for rotating stereoscopic photography is
X-ray tube apparatus and image around subject 10 on table 9
The subject 10 is irradiated with X-rays while rotating the system device.
Detects the transmitted X-ray image and processes the image, and displays the captured image on the display device.
Supporting device for performing continuous stereoscopic display
Then, as shown in FIG. 2, the gantry body 11 and the rotation support
Vessel 12;FirstX-ray tube device 13, video system device 14,
Consists of The gantry body 11 will be described later.FirstX-ray tube
The apparatus 1 and the imaging system 14 are rotatably supported to support the subject 1
0 is the main body that performs X-ray photography,
The subject table 9 is placed in the center of the upright
A substantially circular opening 16 for insertion in a horizontal direction is formed.
ing. The inside of the gantry body 11 is shown in FIG.
As shown, a rotation support 12 is provided. This time
The rolling support device 12 includes an X-ray tube device 13 and an image system device 14.
It is rotatably supported and rotates around the center of the opening 16.
A ring having a center of rotation;
It is provided rotatably around 16. And illustrated
Forward / reverse rotation in the directions of arrows C and D by the omitted known drive mechanism
It is supposed to be. In addition, the rotation support device 12
An example of the rotation angle range is an X-ray irradiation angle with respect to the subject 10.
For example, assuming a maximum of 360 degrees, X-rays start rotating from the stop position
The acceleration section until the start of irradiation and the end of X-ray irradiation
And the deceleration section until the rotation stops, for example,
The maximum is about 500 degrees. Further, the rotation support device 12 is not shown in the drawings.
As shown by arrows E and F in FIG.
The subject 10 can be tilted in the head direction and the foot direction.
You. Then, the rotation support device 12 moves in the directions of arrows E and F.
The angle range of the tilting operation is determined by the rotation surface of the rotation support device 12.
For example, based on a position orthogonal to the body axis direction of the specimen 10,
For example, up to about 30 degrees in the head direction (E direction) of the subject 10 and the foot direction
A maximum of about 30 degrees in the (F direction) is set to a total of about 60 degrees. What
In addition, the angle of the rotation operation and the tilting operation of the rotation support device 12
Is the outer circumference of the rotation support device 12 shown in FIG.
The tilt is detected by the encoder 17a learned on the surface.
The tilting angle of the tilting motion of the rotation support device 12 shown in FIG.
Detected by encoder 17b provided on the support shaft
It has become. [0013] The first X-ray tube device 13 is provided with the subject table.
X-ray irradiates a subject 10 placed on a bull 9
In this, it is fixed to one place on the rotation support device 12 and described later.
A predetermined high voltage is supplied from the X-ray controller 36.
ing. In addition, the imaging device 14 transmits the
X-ray imageConvert to optical imageAnd capture this output optical image
And converts it into a video signal.
X-ray image transmitted through the subject 10 from the
An image intensifier that converts to an image (hereinafter referred to as “I.
I. "), and output from this I.I.18
TV camera 19 for taking an optical image and converting it into an electric signal
Consisting of Then, the X-rays are
It is arranged to face the tube device 13. Then, a gas containing each of the above-mentioned components is provided.
As shown in FIG. 3, the entire entry body 11 is box-shaped.
Is covered with an outer cover 20. Also, in the center
Around the opening 16 formed and into which the subject table 9 is inserted
Is the subject inserted and placed on the subject table 9
10 is covered with a cylindrical cover to protect it. Obedience
Therefore, usually, the above X
The tube device 13 and the video system device 14 are shared with the rotary support device 12.
Will rotate. An object table 9 has an object 1 on its upper surface.
0 is laid on the X-ray tube 13 and the diagnostic unit
2 so that it can be positioned with respect to the floor 15 shown in FIG.
To move the parallel horizontal plane in the body axis direction and the width direction of the subject 10.
It is movably supported by a known support mechanism. Rotating stereoscopic photography
In the shadow, the X-ray tube device 13 around the subject 10 and
In order to perform X-ray imaging while rotating the imaging device 14,
Imaged when the diagnostic site of the subject 10 is not near the center of rotation
There is a risk that the diagnosis site may come off the X-ray irradiation area on the way.
You. Therefore, it is provided on the gantry body 11 shown in FIG.
The diameter of the opening 16 is determined by the object table 9 inserted.
Not only is possible, but also the diagnostic site of
The dimensions should be large enough to be located near the center of rotation
There is a need. The above-mentioned subject table 9 is described later.
X-ray irradiation by the X-ray tube device 23 of the fluoroscopic support device 2
The diagnostic site of the subject 10 can be positioned with respect to the region.
So that it can be moved. On the other hand, the support device 2 for fluoroscopy is
Angle of the diagnostic site of the subject 10 on the table 9
X-ray tube apparatus and imaging system to perform precise diagnosis from the direction
X-rays are emitted while the equipment is at rest and the transmitted X-ray image is detected.
Image processing and display the captured image on the display device.
As shown in FIG. 2, the support unit 21
And a C-shaped arm 22;SecondX-ray tube device 23
And an image system device 24. The gantry 21 is an arm described later.
22 andSecondX-ray tube device 23 and imaging system device 24
It is movably supported, for example, installed on the ceiling surface 25.
Along the longitudinal direction and the width direction of the subject table 9
It is movably suspended by rail means or the like. The lower end of the gantry 21 is shown in FIG.
Thus, a C-shaped arm 22 is provided. This C character
The arm 22 includes an X-ray tube device 23 and an imaging system device 24.
It is movably supported around the subject 10,
Slide connection part 2 provided at the lower end of the gantry part 21
6 so as to be slidable in an arc direction,
Both ends extend so as to sandwich the subject table 9
I have. And, provided in the slide coupling portion 26
With a known drive mechanism, the C-shaped arm 22
Around the body axis of the subject 10 around the center of the shape as the center of rotation
Sliding movement like arrows G and H
2, and further, as shown in FIG.
The subject 1 as indicated by arrows J and K around the point L where the part is located
It can be tilted in the head direction and the foot direction of zero. In addition,
Sliding motion and tilting of the C-shaped arm 22 in the arc direction
As for the angle of the tilting motion, the angle of the sliding motion is the C-shape shown in FIG.
Encoder 27a learned on the outer surface of arm 22
Therefore, the angle of the tilting operation is detected and the slide shown in FIG.
An encoder 27b provided on a root support shaft of the coupling portion 26
Is to be detected. The second X-ray tube device 23 is provided with the subject table.
X-ray is applied to the subject 10 placed on the bull 9 and positioned.
Irradiation, as shown in FIG.
Attached to one end and specified from X-ray controller 36 described later
High voltage is supplied. Also, the imaging system
The apparatus 24 converts the transmitted X-ray image of the subject 10Convert to optical imageYou
And captures this output optical image and converts it into a video signal.
The subject 10 irradiated from the X-ray tube device 23
I.I.28 which detects the transmitted X-ray image and converts it into an optical image
And photograph the optical image output from this I.I.
4 and a television camera 29 for converting the signal into a signal.
As described above, the X-ray tube device 2 is connected to the other end of the C-shaped arm 22.
3 and close to and retreat from the subject 10
It is provided as possible. That is, the C-shaped arm 2
2 can move linearly with respect to the X-ray tube device 23 at the other end.
An imaging system support 30 having a structure is provided.
I.I.28 and I.I.28 in the linear moving structure of the imaging system support 30
By attaching the television camera 29, the illustration is omitted.
Approaching and retreating as indicated by arrows L and M by known driving mechanism
Supported by Noh. Note that the imaging system device 24 is an I.
Not only those consisting of I.28 and TV camera 29,
An ordinary X-ray film photographing device may be used. In addition, FIG.
In the embodiment of FIG. 4, the gantry 21 is suspended from the ceiling surface 25.
However, the present invention is not limited to this.
It is good also as a structure which mounts the stand part 21 on 15. The image processing apparatus 3 shown in FIG.
Image system device 14 of support device 1 for body imaging and support for perspective imaging
The video signal from the imaging device 24 of the holding device 2 is digitally converted.
And process this digital signal to form an image.
The television of each of the supporting devices 1 and 2
Analog video signals output from cameras 19 and 29
A / D converter 31 for inputting and converting into a digital signal
And the image data output from the A / D converter 31
The storage device 32 for storing the data and the data read from the storage device 32
Input image data and convert to analog video signal again
Output from the D / A converter 33 and the A / D converter 31
Storage 34 for storing a large number of image data
And images from the storage device 32 and the mass storage device 34, etc.
Data calculator 3 which takes in image data and performs necessary calculations
5 is comprised. Then, the display device 4 displays the image
The video signal output from the image processing device 3 is
For example, one or more TV models
Consists of Nita. The rotation control device 5 includes a support for the rotation stereoscopic photography.
Rotation direction and speed of the rotation support device 12 of the
Which rotation operation is controlled,
The signals from the encoders 17a and 17b that detect the position are
To be entered. Also, the arm control device 6
Is a slide of the C-shaped arm 22 of the fluoroscopic support device 2.
Ride and tilt movements and the subject 10
To control the approaching and retreating motions
Encoders 27a and 27b for detecting the actual position of the arm 22
Signal from the computer. Then, the system control device 7 controls each of the above components.
It controls the operation of the components, and is input from the operating device 8
Fetched various operation commands, and
Control device 5, arm control device 6, X-ray controller 36, etc.
It sends out control signals, such as CPU
(Central processing unit). The X-ray controller 36
The support device 1 for rotating stereoscopic photography and the support for perspective photography
When a high voltage is supplied to the X-ray tube devices 13 and 23 of the device 2,
In addition, X-ray irradiation is controlled. Next, the digital X constructed as described above
The operation of the radiographic apparatus will be described. Here, for example,
First, fluoroscopy is performed to diagnose vascular lesions in the subject.
Diagnosis site under X-ray fluoroscopy using the shadow support device 2
The catheter is introduced to the
I.I.18 shown in FIG. 1 was taken from the position of point Q using
Start shadow, make one rotation in the direction of arrow C, and end shooting at point Q
360-degree shooting method.
Precise diagnosis in a stationary state using the support device 2 for visual imaging
A case in which shooting for interruption is performed will be described as an example. First, in FIG.
The subject 10 lying on the bed is subjected to an X-ray
Positioning to X-ray irradiation area by tube device 23 and II.28
To the diagnostic site for contrast injection under fluoroscopy.
-The introduction of a satellite is carried out. In this case, when introducing the catheter
The X-ray irradiation direction is not angled with respect to the subject 10,
As shown in FIGS. 2 and 4, II.28 is directly above the subject 10.
It is in the state located in. In this state the subject
When catheter introduction for 10 diagnostic sites is completed,
In FIG. 2, the subject table 9 is horizontally moved in the direction of arrow N.
And insert the diagnostic site of the subject 10 into the gantry body 1
And during rotation shooting by the rotation stereoscopic shooting support device 1
Position so that it is located near the heart. Next, the operator operates a rotation provided on the operation device 8.
By operating the support operation switch, the rotation support
12 is tilted in the directions of arrows E and F shown in FIG.
Stop at an angle and move in the directions of arrows C and D shown in FIG.
I.I.18 is positioned at point P, which is the shooting preparation position by rotating
So move and stop. After that, the camera 8
When the shadow start operation is performed, a known contrast agent injector (not shown) is used.
Of the contrast agent to the diagnostic site of the subject 10 through the catheter
While the injection is performed, the rotary support 12 is moved in the direction of arrow C.
Starts rotation, and I.I.18 reaches point Q at the shooting start position
Right before reaching the specified rotational angular velocity,
Continue. And that the above-mentioned II.18 has reached the Q point.
Is detected by the encoder 17a, the detection signal is rotated.
It is sent to the control device 5, and this rotation control device 5
The detection signal is sent to the system controller 7. This system
The X-ray controller 7 is controlled by the X-ray controller
A control signal for starting the photographing is transmitted to 36. Then, at this time
From the point, the X-ray controller 36 has a pulse-like height of, for example, 4 ms.
A voltage is generated and supplied to the X-ray tube device 13. This
Pulsed X-rays are emitted from the X-ray tube device 13,
The object 10 on the object table 9 is irradiated. This state
The X-ray image transmitted through the subject 10 in the
Is converted to an optical image, and this output optical image is
Photographed at LA19. Next, the output from the television camera 19 is
The video signal is sent to the A / D converter 31 in the image processing device 3.
Input, converted to digital signals and converted to image data.
And stored in the storage device 32. At this time, the rotation support 12
Angle detection from encoders 17a and 17b provided in
The signal is transmitted through the rotation control device 5 and the system control device 7.
Input to the image processing device 3 and combined with the image data.
And stored in the storage device 32. Thus, as shown in FIG.
Of the subject 10 sequentially imaged during the rotation in the direction of arrow C.
The image data with the shooting angle information is stored in the storage device 32.
The image data read from the storage unit 32 is D /
The signal is converted into an analog image signal by the A converter 33. Soshi
This image signal is sent to the display device 4 and a plurality of
Are sequentially displayed. This display device 4 continuously displays
X-ray irradiation on the subject 10 is performed for each image.
Because the directions are different, due to the afterimage effect of the human eye
It is observed as a stereoscopic image. As described above, the rotation support 12 rotates continuously.
Rotational stereoscopic imaging is performed on the subject 10 by the I.I.
18 rotates 360 degrees in the direction of arrow C shown in FIG.
When the position Q point is reached, the encoder 17a detects this.
Out, rotation control device 5, system control device 7, and X
X-ray emission from the X-ray tube device 13 via the X-ray controller 36
Is stopped. At the same time, the system controller 7
Indicates that the rotation of the rotation support device 12 is stopped via the rotation control device 5.
Operation, decelerate from Q point and stop rotation at R point.
Let Thus, a series of rotation stereoscopic photography ends. So
After that, rotation stereoscopic imaging of the same site or a different diagnostic site
To perform the shadow, the same procedure as described above may be repeated. Rotational stereoscopic photography has been completed as described above.
Thereafter, to reproduce the captured image, the image provided on the operation device 8 is displayed.
Operate the image playback switch. Then, this input
The raw command is sent to the image processing device 3 via the system control device 7.
A series of rotating solids sent and stored in the mass storage 34
The captured images are sequentially read out and displayed via the D / A converter 33.
A continuous image is reproduced and displayed on the display device 4. This
The operator uses the continuously displayed moving images to
Observe the three-dimensional image of the lesion, and then
One image at the shooting angle where the region of interest is most clearly visible
Select. Then operate the image playback switch again
And displaying the selected one image as a still image on the display device.
4 is displayed. From this state, the fluoroscopic support device 2 is used.
The operation shifts to fluoroscopic imaging in a stationary state. That is,
The operator operates the image selection switch provided on the operation device 8.
Make. Then, the input selection command is
Sent to the image processing device 3 via the control device 7, and
Shooting angle recorded in addition to the image displayed in display 4
The degree information is read. Then, this shooting angle information is
The image data is sent from the image processing device 3 to the system control device 7.
The system control device 7 has the above
C-shaped arm with the shooting angle information sent as the target value
22 so as to perform a sliding motion and a tilting motion in an arc direction.
Command signal. The arm control device 6 receives the command signal
To control a known driving mechanism (not shown) to form a C-shaped
The arm 22 is moved and from the encoders 27a and 27b
The photographing angle by the C-shaped arm 22 is based on the actual position signal of
At the position corresponding to the target value, the C-shaped arm 22
Stop moving. In this manner, the photographing by the C-shaped arm 22 is performed.
When the position of the shadow angle is automatically set,
The body table 9 is moved in the direction of the arrow O to examine the subject 10.
The cut part is in the X-ray irradiation area by the X-ray tube device 23 and II.28.
Position to enter. And it is provided in the operation device 8
By operating the I.I.
I.I.28 descends in the direction of arrow L and approaches the subject 10
And stop at an appropriate position just enough to touch the surface of the subject.
You. In this state, the operator operates the operation device 8 to start shooting.
When the operation is performed, the catheter is passed through the above-described contrast agent injector.
The injection of the contrast agent is started and the system control
A control signal for starting the imaging is transmitted from the device 7 to the X-ray controller 36.
The high voltage is supplied from the X-ray controller 36 to the X-ray tube device 23.
Then, the subject 10 is irradiated with X-rays. The X-ray image transmitted through the subject 10 is shown in II.
28 and a television camera 29,
Is input to the image processing device 3 where the required
Image processing is performed to form and store an image. This
In this way, an appropriate number of fluoroscopic shots are taken and the resulting image is
This image is displayed on the display device 4 and observed by a doctor or the like.
The precise diagnosis of the vascular lesion of the subject 10 is performed.
You. It should be noted that a suitable photographing angle by the above-described rotation stereoscopic photographing is set.
If there are two or more images, repeat the above procedure to
Changing the shooting angle of the supporting device for visual shooting 2
What is necessary is just to implement. In the above description, the rotation stereoscopic photography is used.
And the inclination of the rotation support device 12 shown in FIG.
Rotational shooting with the tilt angle fixed at a certain angle
However, the present invention is not limited to this.
Even if you rotate and shoot while tilting in the E and F directions
Good. Also, arrows C, shown in FIG.
When the rotation in the direction D is stopped, an arrow shown in FIG.
Shooting may be performed only by tilting in the E and F directions.
No. Furthermore, regarding the diagnostic site of the subject 10, vascular disease
Not only for diagnosis of abnormal parts, but also for
Suitable for diagnosis of other parts for which diagnosis by rotating stereography is effective.
Can be used. [0033] The present invention has been configured as described above.
Rotational stereography around the subject with the support device for rotation stereography
The subject is photographed, and the subject is
And perform fluoroscopic photography with the arm stopped,Image processing equipment
The support device for rotating stereoscopic photography and the support device for fluoroscopic photography
Process the video signal from the device to form an image,
Input the image signal from the image processing device
Show,The rotation control device rotates the support device for rotating stereoscopic photography.
The rotation operation of the roller support is controlled, and the above-mentioned transparency is controlled by the arm controller.
Controlling the movement of the arm of the support device for visual imaging,Central Office
Consists of physical devicesSystem control unitByFrom the actuator
Controls the operation of each of the above components by capturing operation commandsDo
In addition, a series of images taken with the support device for rotating stereoscopic photography
Select from the images by the selection command input with the operation device
Reads out the shooting angle information of the image from the image processing device
To the arm controller, andShooting angle position
Can automatically set the arm of the fluoroscopy support device.
Wear. This makes it possible to perform rotational stereoscopic imaging around the subject
For example, after confirming the lesion, precision by normal fluoroscopy
It is easy and quick to set and reproduce the imaging angle for diagnosis.
You can go. Therefore, the diagnosis of the subject as a whole is
In addition to shortening the inspection time, X-ray exposure to the subject
Can be reduced.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system block diagram showing an overall configuration of a digital X-ray imaging apparatus according to the present invention. FIG. 2 is a front view showing a specific structure example of the digital X-ray imaging apparatus. FIG. 3 is a side view showing the support device for rotating stereoscopic photography as viewed from the line AA in FIG. 2; FIG. 4 is a side view showing the support apparatus for fluoroscopic imaging as viewed from the line BB in FIG. 2; DESCRIPTION OF SYMBOLS 1 ... Support device for rotating stereoscopic photography 2 ... Support device for perspective photography 3 ... Image processing device 4 ... Display device 5 ... Rotation control device 6 ... Arm control device 7 ... System control device 8 ... Operation device 9 ... Subject table 10 Subject 11 Gantry body 12 Rotary supports 13 and 23 X-ray tube device 14 Image system device 16 Openings 18 and 28 II 19 and 29 Television camera 21 Stand 22 C-shaped arm 24: imaging system device 36: X-ray controller

────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-2-156778 (JP, A) JP-A-4-327837 (JP, A) JP-A-1-185247 (JP, A) JP-A-4-185 51937 (JP, A) JP-A-1-185246 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61B 6/00

Claims (1)

(57) rotatably mounted around of the Claims 1 opening for formed at a substantially central portion of the installed gantry body on the floor to insert the object table in the horizontal direction The subject is irradiated with X-rays by a first X-ray tube device attached to the ring-shaped rotating support, and an image-based device arranged opposite to the first X-ray tube on the rotating support. Optical transmission X-ray image of the subject
A support device for rotating stereoscopic imaging for converting the output optical image into an image and converting the output optical image into a video signal , and performing rotational stereoscopic imaging around the subject, and a longitudinal length of the subject table A second X-ray attached to one end of an arm movably provided along the width direction and the width direction and having both ends extending across the subject table and arbitrarily movable around the subject. The X-ray tube device irradiates the subject with X-rays, and the other end of the arm is arranged to face the second X-ray tube device at the other end so as to approach and retreat from the subject. Transparent X-ray image to optical image
Was converted into a video signal by photographing the output optical image and converts the fluoroscopic supporting device for performing fluoroscopic imaging in the stopped state of the arm about the subject, the video system of the rotary stereoscopic photography supporting device Equipment and fluoroscopy
Process video signals from the imaging system of
And an image signal from the image processing apparatus to display an image.
One or a plurality of display devices, a rotation control device that controls a rotation operation of a rotation support device of the support device for rotating stereoscopic imaging, and an arm control device that controls a movement operation of an arm of the support device for fluoroscopic imaging. In addition to receiving operation commands from the operation device to control the operation of each of the above-described components , the rotation stereoscopic imaging support device captures the images.
Selection finger input from the controller from a series of shaded images
The image processing device converts the shooting angle information of the image selected by the
From the selected image and send it to the arm controller.
Automatic setting of the arm of the fluoroscope support device at the shooting angle position
And a system control device comprising a central processing unit for calculating and controlling the digital X-ray imaging apparatus.