JP2000271109A - Medical x-ray system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a two-dimensional image and a three-dimensional image from the multiple direction of a subject by the same device by oppositely arranging an X-ray tube and a detecting device in a rotary member to be turned around a horizontal shaft, and supporting this rotary member so as to be tiltable at an optional angle to the body axis of the subject. SOLUTION: At radioscopic time, a ring 1 having an X-ray tube 2 and an image receiving device 3 in positions opposed in the diametrical direction is rotated in a ring-shaped rotary plate support frame 6 via a rotary plate 4 by a rotary plate driving part 12, and the ring 1 is set vertically to the body axis of a subject or to an optional inclination by driving a ring part driving part 9. A transmitted X-ray of the subject is detected by the image receiving device 3 by seeing through from the set direction, and this detecting signal is processed by an image processing device to generate a two-dimensional image. At image pickup time of a cone beam CT, the rotary plate 4 is rotated around the subject in a state of inclining the ring 1, and a detecting signal at this time is processed to generate a three-dimensional image.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical X-ray apparatus, and more particularly, to an IVR using an angiographic examination or an X-ray diagnostic apparatus.
The present invention relates to a medical X-ray apparatus having a function of obtaining a two-dimensional image and a three-dimensional image with a single apparatus suitable for a treatment called (Interventional Radiology).

[0002]

2. Description of the Related Art Medical X-ray fluoroscopic apparatuses such as X-ray fluoroscopic tables and circulatory organ X-ray diagnostic apparatuses have become indispensable in the field of diagnosis. Is also being used. This treatment is performed by inserting a catheter with various instruments attached to the tip under fluoroscopy into the blood vessels and organs of the subject. Therefore, it has a great merit that pain given to a subject can be reduced and treatment can be performed at a low cost, and therefore, it is rapidly spreading. Such a treatment method is called IVR (Interventiona
l Radiology).

In this IVR, it is desirable to be able to three-dimensionally grasp the position and shape of the target part. For this purpose, a three-dimensional image is acquired by an X-ray CT apparatus, and the position and shape of the target part are grasped based on the three-dimensional image.
The X-ray generation system and the X-ray detection system
X-ray from various angles using a circulatory organ X-ray diagnostic device supported by a V-shaped arm ("Medical and Dental Publishing Co., Ltd .: Medical Radiology Lecture 13, Radiation Diagnostic Equipment Engineering, FIG. 4-7 on page 156"). Irradiation was performed, treatment was performed with reference to a two-dimensional fluoroscopic image of the target site acquired by the circulatory organ X-ray diagnostic apparatus, and confirmation of the treatment results was performed again using the X-ray CT apparatus. .

In the circulatory organ X-ray diagnostic apparatus using the C-shaped arm, rotation of the arm (rotation in a direction perpendicular to the body axis of the subject) and sliding movement (so as to allow fluoroscopy and imaging from various directions). Various rotations and movements (movements in a direction inclined with respect to the body axis of the subject) can be performed, and as described above, the X-ray CT
The position and shape of the treatment target site are confirmed based on the three-dimensional image generated by the device, and based on the position and shape obtained by the three-dimensional image and the two-dimensional image seen through the circulatory organ X-ray diagnostic apparatus. Diagnosis and treatment were performed.

[0005]

SUMMARY OF THE INVENTION Such a circulatory organ X
In the method using the X-ray diagnostic apparatus and the X-ray CT apparatus together, the IV
Since the information obtained during R is only two-dimensional information obtained by the circulatory organ X-ray diagnostic apparatus, the surgeon can position or shape the treatment target part during the operation or the treatment target part and the tip of the catheter. It is not possible to intuitively grasp the positional relationship with the attached treatment instrument. Also,
In order to obtain a three-dimensional image with an X-ray CT apparatus, a volume scan or helical reconstruction of a three-dimensional image of the subject from transmitted X-ray detection data of the subject while moving the subject in the body axis direction is performed. A technique called scanning is used. However, this volume scan X-ray CT
The apparatus has a problem that the resolution in the body axis direction of the subject is low. If the resolution is low, it may be difficult to accurately grasp the position and shape of the treatment target site, and further improvement in the resolution is desired. As a method of improving the resolution, a method of imaging by lowering the moving speed of the subject with respect to the rotation speed of the imaging system can be considered, in which case,
The responsiveness required by the IVR cannot be obtained.

In the method of using the X-ray CT apparatus and the circulatory organ X-ray diagnostic apparatus together, two apparatuses, an X-ray CT apparatus and a circulatory organ X-ray diagnostic apparatus, which are expensive and require a large installation space, are provided. Therefore, there is a problem in terms of economy and installation space. In view of the above problems, an object of the present invention is to provide a medical X-ray apparatus suitable for an IVR that is economical and has a small installation space, in which a two-dimensional image and a three-dimensional image of a subject from multiple directions can be obtained by the same apparatus. To provide.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to provide a support frame having an opening for horizontally inserting a table on which a subject is mounted, and a support frame supported by the support frame to rotate around the opening. A first rotation member, a rotation control means for controlling the rotation of the first rotation member, a second rotation member supported on the first rotation member so as to be tiltable in the body axis direction of the subject, Tilt angle control means for controlling the tilt angle of the second rotating member, an X-ray tube device supported by the second rotating member for irradiating the subject with X-rays, and supported by the second rotating member A detection device that is arranged opposite to the X-ray tube device across the subject and detects transmitted X-rays of the subject,
The rotation control means controls the rotation of the first rotating member,
An image processing device for tilting the second rotating member to an arbitrary tilt angle by the tilt angle control means and processing an output signal from the detection device to generate a two-dimensional image and a three-dimensional image; And a display device for displaying the image generated by the device.

With this configuration, at the time of fluoroscopy, the X-ray tube device and the detection device are set to an arbitrary angle around the subject by rotating the first rotating member by the rotation control means, thereby controlling the tilt angle. The second rotating member is set perpendicular to the body axis of the subject or at an arbitrary inclination angle by means, and the transmitted X-rays of the subject are detected by the detecting device while seeing through the set directions, and the detection signal Is processed by an image processing apparatus to generate a two-dimensional image, and at the time of cone beam CT imaging, the second rotation member is set to be perpendicular to the body axis of the subject or at an arbitrary inclination angle by the inclination angle control means. The first rotation member is rotated around the subject by the rotation control means in the state of the set vertical or arbitrary inclination angle, and the transmitted X-ray of the subject is detected by the detecting device, and this detection signal is converted into an image processing device. Processed by To generate a three-dimensional image Te. The two-dimensional image and / or the three-dimensional image generated by these are displayed on a display device, and IVR or the like can be performed with reference to the displayed image. Also, in order to use it for IVR, it is desirable that the opening for inserting the subject be as wide as possible in terms of securing a working space during the operation. Also in this regard, the present invention provides the first rotating member and the second rotating member with a function of rotating the X-ray tube device and the detecting device around the subject and a function of inclining the subject with respect to the body axis of the subject. Therefore, by dividing the components of the X-ray generation system and the detection system and mounting them on the first rotating member and the second rotating member, the opening can be formed in the conventional X-ray system. Line C
It can be wider than the T device, and the working space required for performing IVR can be secured. As a result, it is easy to always observe the state of the expression of the subject in order to quickly respond to sudden changes in the condition of the subject during the operation, so that it is possible to quickly respond to sudden changes in the condition of the subject. become

Further, according to the present invention, by providing means for moving the subject in the body axis direction of the subject, the subject can be imaged while the subject is stationary. Further, the two-dimensional image and the three-dimensional image formed by the image processing device are simultaneously displayed on the same display device or different display devices, and by referring to these images, the position and shape information of the target part is abundant. Thus, a medical X-ray apparatus suitable for IVR can be provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings together with embodiments of the present invention. In all the drawings for describing the embodiments of the present invention,
Components having the same function are denoted by the same reference numerals, and their repeated description is omitted.

[1] Description of Configuration FIG. 1 is a perspective view showing the configuration of a medical X-ray apparatus according to the present invention, and FIG.
FIG. 3 is a front view of FIG. 1, and FIG. 3 is a view showing a mechanism for transmitting the rotational force of the rotating plate of FIGS. 1 and 2 to a ring. The following figure 1
The configuration of the present invention will be described with reference to FIGS.

1 has an arbitrary size inside diameter and thickness,
A ring 2 having an opening 13 into which a table (not shown) on which a subject (not shown) is placed is inserted into the ring 2 to irradiate the subject on a vertical axis including the center of the ring 1.
An X-ray tube device (hereinafter simply referred to as an X-ray tube) 3 which focuses the line and is fixed in the inner diameter surface of the ring 1, and 3 is a device on a vertical axis including the center of the ring 1. The X-ray tube 2 is sandwiched between the inside of the inner surface of the ring 1 and the subject.
The image receiving device is fixed at a position facing the image receiving device. The image receiving device 3 may be configured by an image intensifier and a television camera or a CCD (charge coupled device) camera, or may be a flat panel type two-dimensional sensor using a semiconductor detector. Reference numeral 4 denotes an opening which is wider than at least the opening 13 of the ring 1 for inserting a table on which the subject is placed. The ring 1 supporting the X-ray tube 2 and the X-ray image receiving means 3 is connected to the A rotating plate that rotates or moves to the periphery, and is rotatably supported by a support frame 6 via at least one bearing 5.

The two shafts 7 are on a horizontal axis including the center of the ring 1 and are fixed to the ring 1 so that their axes coincide with the horizontal axis. The shaft 7 is the rotating plate 4
Is inserted into the inner diameter of the bearing 8 fixed to the
The ring 1 to which the shaft 7 is fixed via the bearing 8 can be tilted in the body axis direction of the subject.

Reference numeral 9 denotes a drive unit for inclining the ring 1 in the body axis direction of the subject, a pulley 10 fixed to one end of the shaft 7, a motor 9a fixed to the rotary plate 4, and a motor 9a. A pulley 9b fixed to the shaft, a belt 11 connecting the pulley 9b and the pulley 10, a brake 9c for stopping the rotation of the motor 9a, and a detector 9d for detecting the rotation speed of the motor 9a. The rotational driving force of the motor 9a is transmitted to the ring 1 to tilt the ring 1 in the body axis direction of the subject. Numeral 12 denotes a drive unit for rotating the rotary plate 4, a motor 12a fixed to a support frame, and a pulley 12b fixed to the motor shaft.
And a detector 12c for detecting the number of rotations of the motor 12a.
And a brake 12 for stopping rotation of the motor 12a.
d, the pulley 12b and the rotary plate 4
3, the rotational driving force of the motor 12a is transmitted to the rotary plate 4 and can rotate with respect to the support frame 6. Therefore, the ring 1 rotatably fixed to the rotating plate 4
Can rotate about a horizontal axis including the center of the ring 1, and the X-ray tube 2 and the image receiving device 3 rotate facing each other.

For use in the IVR, it is desirable that the opening for inserting the subject is as wide as possible in terms of securing a working space during the operation. In this regard, in the above embodiment, the function of rotating the X-ray tube 2 and the image receiving device 3 around the subject and the function of inclining the subject with respect to the body axis of the subject are provided on the rotating plate 4 and the ring 1. Since it is configured to be divided and held, like a conventional X-ray CT device,
An X-ray generation system (consisting of an X-ray tube device and a high-voltage generation device for applying a high voltage to the X-ray tube device) and a detection system (an X-ray detector for detecting X-rays transmitted through a subject and its detection) (Including a preamplifier or the like for amplifying the output of the detector) is not mounted on the rotary scanner, and these components of the X-ray generation system and the detection system can be divided and mounted on the rotating plate 4 and the ring 1. The opening of the rotating plate 4 and the ring 1 is connected to the X-ray CT.
It can be larger than the device, and the working space necessary for performing IVR can be secured.

[2] Description of Operation Next, the operation of the first embodiment of the present invention will be described with reference to FIGS.
This will be described in detail with reference to FIG. 2 and FIG. 4 showing a configuration of a control device of this device. The operator instructs the operating device 30 to select a fluoroscopic image or a cone beam CT image. According to this instruction, if the function of acquiring a fluoroscopic image is selected, the output of the image receiving device 3 is input to the image processing means 40 by the switch 36, and if the function of acquiring the cone beam CT image is selected, the switch The output of the image receiving device 3 is input to the image processing means 50 via 36.

(1) When a function to acquire a fluoroscopic image is selected 1) When fluoroscopy is performed from a direction perpendicular to the body axis of the subject The operator issues a control command for fluoroscopy from a direction perpendicular to the body axis of the subject. Is transmitted from the operating device 30 via the system controller 31 to the ring tilt control means 32 so that the X-ray irradiation direction from the X-ray tube 2 is perpendicular to the body axis of the subject.
Based on this control command, the X-ray tube 2 and the X-ray image receiving means 3
The motor 9a of the drive unit 9 for inclining the rotation is transmitted, and the rotation driving force is transmitted to the ring 1 via the pulley 9b, the pulley 10, and the belt 11, and the direction of the X-ray irradiation from the X-ray tube 2 is changed. X-ray tube 2 so that it is perpendicular to the body axis of the subject
And the image receiving device 3 are opposed to each other. That is, the ring 1 is held at a position where the X-ray image receiving means 5 and the X-ray tube 2 face each other on a vertical axis including the isocenter Z.

In order to confirm the traveling direction of the blood vessel, etc.,
A control command for aligning the X-ray tube 2 and the image receiving device 3 at an arbitrary rotational position around the subject is input from the operating device 30, and the control command is used to control the rotation of the rotary plate 4 via the system controller 31. To the rotating plate control means 33 to be executed. Based on this command, the drive unit 12 that drives the rotary plate 4 to rotate
The motor 12a rotates to rotate the pulley 12b connected to the motor shaft, and the belt 13 connecting the pulley 12b and the rotary plate 4 and the bearing 5 rotatably supported by the support frame 6 When the rotating plate 4 is rotated, and reaches the target rotation angle position, the brake 12c is actuated to stop at a desired angle, and the X-ray tube 2 and the X-ray image receiving means 3 are held in a stopped state.

The rotation angle of the rotary plate 4 and X
At a tilt angle of the ring 1 where the X-ray irradiation direction from the X-ray tube 2 is perpendicular to the body axis of the subject (the tilt angle in this case is 0 degree), a system controller 31 based on a command from the operator's operation device 30. The X-ray control means 34 generates an X-ray control amount for generating X-rays corresponding to the X-ray condition from the X-ray tube, and generates X-rays based on the control amount from the X-ray tube 2 to irradiate the subject. I do. The X-ray transmitted through the subject is input to the image receiving device 3 and converted into an electric signal, and the converted analog signal is converted into an analog signal by the A / D converter 4 of the image processing means 40.
Enter 1

The analog signal is converted into a digital signal by an A / D converter 41, sent to an image processing unit 42 and stored in a frame memory 43. The image processing unit 42 performs image processing such as contrast and gamma characteristic conversion on the sent digital image signal, and sends the digital image signal to a display gradation processing unit 44 that performs gradation processing. The digital image signal that has been subjected to the gradation processing in the display gradation processing unit 44 is converted into an analog signal by the D / A converter 45, and a fluoroscopic image is displayed on the display 60.

2) In the case of seeing through from a direction inclined with respect to the body axis of the subject The operator sends a control command for seeing through from a direction inclined with respect to the body axis of the subject from the operating device 30 to the system controller 31. When the irradiation direction of the X-ray from the X-ray tube 2 is tilted with respect to the body axis of the subject, a control command is sent to the ring tilt control means 32. Based on this control command, the drive unit 9 for tilting the X-ray tube 2 and the X-ray image receiving means 3 is driven so that the direction of X-ray irradiation from the X-ray tube 2 with respect to the body axis of the subject is changed. The X is set to an inclination angle corresponding to the control command to be inclined.
The tube 2 and the image receiving device 3 are arranged to face each other.

Further, in order to confirm the running direction of the blood vessel, etc.,
A control command for aligning the X-ray tube 2 and the image receiving device 3 at an arbitrary rotational position around the subject is input from the operating device 30, and the control command is used to control the rotation of the rotary plate 4 via the system controller 31. To the rotating plate control means 33 to be executed. Based on this command, the drive unit 12 that drives the rotary plate 4 to rotate
To stop and hold at the target rotation angle position.
The rotation angle of the rotating plate 4 and the direction of X-ray irradiation from the X-ray tube 2 are inclined with respect to the body axis of the subject.
The subject is irradiated with X-rays from the tilt angle direction of, and the X-rays transmitted through the subject are input to the image receiving device 3. The output from the image receiving device 3 is image-processed by the image processing means 40, and a fluoroscopic image of the subject from a tilt direction with respect to the body axis is displayed on the display 60.

(2) When the function of acquiring a cone beam CT image is selected 1) When imaging is performed by disposing the X-ray tube 2 and the image receiving device 3 perpendicularly to the body axis of the subject. A control command for irradiating X-rays in a direction perpendicular to the body axis to perform cone beam CT imaging is transmitted to the operating device 3.
From 0, it is sent to the ring inclination control means 32 via the system controller 31. Based on this control command, the X-ray tube 2
By driving the drive unit 9 for tilting the X-ray image receiving means 3, the ring 1 is tilted so that the X-ray irradiation direction from the X-ray tube 2 is perpendicular to the body axis of the subject (in this case, the tilt angle is 0).
Control). That is, the ring 1 is provided with the X-ray receiving means 5.
And the X-ray tube 2 are held at positions facing each other on a vertical axis including the isocenter Z.

At the stage where preparations such as positioning of the subject are completed, the operator operates the operating device 30 to control the rotation of the rotating plate control means 33 from the system controller 31 in order to capture a cone beam CT image. Output a command, and rotate the motor 12a of the drive unit 12 based on the command,
The rotating plate 4 is rotated. When the rotating plate 4 reaches a certain rotation speed, the system controller 31 emits X-rays from the X-ray tube 2 via the X-ray control means 34, and
The X-ray transmitted through the subject for one rotation is detected by the image receiving device 3 and converted into an electric signal.

The signal detected by the image receiving device 3 is converted into a digital signal by an A / D converter, and the data is collected by a data collector 5.
1 and performs pre-processing such as logarithmic conversion, gain correction, and offset correction on the X-ray image data from the data collector 51 in the pre-processor 52, and converts the image data from the pre-processor 52 into a convolver. At 53, a product-sum operation is performed on the X-ray absorption data in the pre-projection direction. The data obtained by performing the product-sum operation by the convolver 53 is back-projected onto an image memory 55 to be described later, and a superimposed tomographic image is reconstructed by the back projector 54. The reconstructed tomographic image is reconstructed by the image memory 55. And a desired range of CT data for the tomographic image reconstructed on the image memory 55.
The three-dimensional image generated through the image converter 56 for setting a value is displayed on the display 60.

2) When imaging is performed by tilting the X-ray tube 2 and the image receiving device 3 with respect to the body axis of the subject, the operator irradiates X-rays from a direction tilted with respect to the body axis of the subject. A control command for performing cone beam CT imaging is sent from the operating device 30 to the ring tilt control means 32 via the system controller 31. A drive unit 9 for inclining the X-ray tube 2 and the X-ray image receiving means 3 based on this control command
By driving the ring 1, the X-ray irradiation direction from the X-ray tube 2 is controlled to an inclination angle corresponding to the control command to incline the X-ray irradiation direction with respect to the body axis of the subject, and the link 1 is held at this inclination angle.

At the stage when the preparation such as the positioning of the subject is completed, the operator operates the operating device 30 to control the rotation plate control means 33 from the system controller 31 to take a cone beam CT image. Output a command, and rotate the motor 12a of the drive unit 12 based on the command,
The rotating plate 4 is rotated. When the rotating plate 4 reaches a certain rotation speed, the system controller 31 emits X-rays from the X-ray tube 2 via the X-ray control means 34, and
The X-ray transmitted through the subject for one rotation is detected by the image receiving device 3 and converted into an electric signal. The signal detected by the image receiving device 3 is input to the image processing means 50, and the three-dimensional image generated by the image processing means 50 from the direction inclined with respect to the body axis of the subject is displayed on the display 60.

3) Other Cone Beam Imaging In the cone beam imaging in the above 1) and 2), a method in which a subject is kept stationary and a rotating plate 4 is rotated to perform imaging is described. To a certain inclination angle,
With the rotating plate 4 being rotated, a table (not shown) on which the subject is placed can be moved for imaging. Also,
A moving means is provided on a support frame 6 for supporting the rotating plate 4,
The imaging can be performed by moving the support frame 6 while the subject is stationary and the rotating plate 4 is rotated. According to this method, a wide-range three-dimensional image of the subject can be captured at a time, so that the positional relationship between the treatment site and a portion adjacent thereto is clear, which is convenient for grasping the whole.

[3] Description of Usage Example As a usage example of the embodiment of the present invention, a case where the present invention is used for vascular treatment using a catheter under fluoroscopy, which is a typical example of IVR, will be described. For example, when treating an infarction in a coronary artery, a catheter is inserted from a femoral vein or the like, the catheter is advanced to a target blood vessel under fluoroscopy, and a balloon catheter or an atherectomy catheter is used at a target site. Then, the stenosis is enlarged.

First, in order to three-dimensionally grasp the position and shape of the target site prior to treatment, a cone beam CT function is selected to generate a three-dimensional image, and this image is displayed on a display. In this case, three-dimensional images from various directions are generated by the method described in (1) to (3) of (2) above, displayed on a display as follows, and the display image is referred to. Accurately grasp the position and shape of the target site. (1) The three-dimensional images generated by the methods described in (1) to (3) of (2) above are individually displayed. (2) At least two of the three-dimensional images generated by the method described in (1) to (3) of (2) above are simultaneously displayed. For example, an image obtained by arranging the X-ray tube 2 and the X-ray image receiving means 5 in (1) above perpendicularly to the body axis of the subject and the X-ray tube 2 in (2) -2) above The X-ray receiving unit 5 is tilted with respect to the body axis of the subject to simultaneously display images taken,
Alternatively, the above (2) 1) or 2) image and the above (2) 3)
There are various display methods such as displaying the images simultaneously.

In addition, the above images can be displayed in various combinations. These displays may be displayed on the same display or on separate displays. The simultaneous display is not limited to two types, but may be more than two types. The running state of the blood vessel, which is complicated and intricate by the image generated and displayed in this way, is observed three-dimensionally from multiple directions, and based on the result, the method of [2] (1) 1) and 2) is applied. The catheter operation is performed while viewing the fluoroscopic image to perform a dilation operation of the infarcted blood vessel. During this treatment, in addition to displaying the fluoroscopic images generated in (1) 1) and 2) of [2] above alone, the fluoroscopic image from the direction perpendicular to the body axis of the subject and the subject's body A perspective image from a direction inclined with respect to the axis is displayed on the same monitor or a separate monitor, and both images are referred to, or any three-dimensional image of the cone beam CT image and the perspective image Can be displayed on the same display or on separate displays, and these images can be used as a guide to proceed with the treatment. Then, a function of acquiring a cone beam CT image after the treatment is selected, a three-dimensional image is captured, and the therapeutic effect is confirmed using this image.

As described above, according to the embodiment of the present invention, the position and the shape of the target part are grasped from the three-dimensional image, and the perspective from multiple directions, in particular, the perspective angle in the body axis direction is determined based on the result. Can be set arbitrarily, so that diagnostic information of blood vessels, organs, and the like, which are complicated and complicated, is abundant, and the diagnosis and treatment can be improved.

[0033]

As described above, according to the present invention, a three-dimensional image and a two-dimensional image are generated by the same apparatus, and the information on the position and shape of the subject to be diagnosed and treated based on the three-dimensional image is obtained. Based on the perspective at an arbitrary angle with respect to the body axis direction of the subject, a reference is made to a two-dimensional perspective image from multiple directions.
VR can be performed. As a result, the position and shape information of complicated and complicated blood vessels and organs will be abundant,
It is possible to provide a medical X-ray apparatus that contributes to improvement of treatment, is economical, and requires a small installation space.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a configuration of a medical X-ray apparatus of the present invention.

FIG. 2 is a front view of the medical X-ray apparatus of the present invention.

FIG. 3 is a diagram showing a mechanism for transmitting a rotational driving force of a rotating plate of the medical X-ray apparatus of the present invention to a ring.

FIG. 4 is a configuration diagram of a control device of the medical X-ray apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Ring 2 X-ray tube 3 Image receiving device 4 Rotating plate 6 Rotating plate support frame 9 Ring driving unit 12 Rotating plate driving unit 30 Operating device 31 System controller 32 Ring inclination control unit 33 Rotating plate control unit 34 X-ray control unit 36 Switching unit 40 image processing means (two-dimensional image) 50 image processing means (three-dimensional image) 60 display

Claims (1)

[Claims] 1. A supporting frame having an opening for horizontally inserting a table on which a subject is placed, a first rotating member supported by the supporting frame and rotating around the opening, Rotation control means for controlling the rotation of the first rotating member, a second rotating member supported by the first rotating member so as to be tiltable in the body axis direction of the subject, and an inclination of the second rotating member Tilt angle control means for controlling an angle, an X-ray tube device supported by the second rotating member to irradiate the subject with X-rays, and an X-ray tube device supported by the second rotating member and sandwiching the subject A detection device that is disposed opposite to an X-ray tube device and detects transmitted X-rays of the subject; and the rotation control means controls the rotation of the first rotating member, and the tilt angle control means controls the second rotation. Output signal from the detection device by tilting the member to an arbitrary tilt angle Processing apparatus for generating a two-dimensional image and a three-dimensional image by processing the image, and a display device for displaying the image generated by the image processing apparatus.
Line equipment.