JPH11342126A - X-ray radiography device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a device constitution, to facilitate operation, to reduce burden on a patient and a nurse between angiography and computerized tomography, and to reduce required time while improving image quality of an obtained CT image. SOLUTION: In providing a single device with an angiography function and a CT function, a rotary plate 2 and an X-ray tube device 3 are commonly used for both functions. Detectors 6 and 7 are provided for the respective functions, and desired one of them and a facing relation to the X-ray tube device 3 of it are set by a setting means 20. The X-ray tube device 3, an X-ray collimator device 4, and the detectors 6, 7 are composed in such a way as to be capable of angiography and computerized tomography by use of the setting means 20, and when a position change is generated before and after setting by the setting means 20, the position change occurs only in a rotary plate rotation axis direction, thereby position deflection around the rotary plate axis direction before and after setting is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an IVR (Intervening
In conventional radiology), the catheter insertion position for selective imaging of organs is confirmed using angiographic images that have a wide field of view in the direction of the patient's body axis, and the contrast and resolution are excellent for confirming the imaging range. The present invention relates to an X-ray imaging apparatus suitable for using an X-ray CT image.

[0002]

2. Description of the Related Art In the treatment of cancer, aneurysm, and the like, limiting the treatment site to a minimum range is effective in reducing the pain and side effects of the patient involved in the treatment. However, on the other hand, if there is a cancer metastasis or a lesion present outside the treatment site, the treatment itself is rendered ineffective. Therefore, the determination of the treatment site is very important, which is
The same applies to the case where the VR method is used. So I
In the VR method, an X-ray imaging apparatus excellent in confirming a catheter insertion position and confirming an imaging range for performing selective imaging of a treatment site, for example, an organ, is used. -Ray angiography apparatus and X-ray C
A device simply combined with a T-image photographing device (X-ray CT device) is used.

[0003]

As described above, the conventional apparatus has the following problems because it is simply a combination of an X-ray angiographic imaging apparatus and an X-ray CT apparatus. That is, the installation space and installation weight of the entire device are
The total size of the X-ray angiography imaging apparatus and the X-ray CT apparatus is two, and the size and weight are increased. In addition, there is a console for each device, and two consoles coexist,
Operation became complicated. Further, when moving from angiographic imaging to CT imaging, or vice versa, the patient (subject) must be transported between the tables of the two devices each time, and the patient, doctor, nurse, etc. This not only imposes a burden on those assistants, but also requires a great deal of time in an emergency.

[0004] As an X-ray imaging apparatus which solves such a problem, there is an apparatus disclosed in Japanese Patent Application Laid-Open No. 6-269439. This is achieved by a single X-ray tube device / detector rotation support mechanism having a rotating frame (rotating plate).
The T image detection signal or the X-ray angiographic image detection signal can be selectively obtained. Specifically, the X-ray tube device on the rotating plate is moved in the direction around the rotating plate rotation axis, and the X-ray tube device is connected to any one of the CT image capturing detector or the angiographic image capturing detector on the same rotating plate. It is made to face directly.

[0005] In such an X-ray imaging apparatus, the installation space and the installation weight of the entire apparatus are reduced by half, and the operation becomes easy with only one console. Further, there is an advantage that there is no need to transfer the patient between angiographic imaging and CT imaging, so that the burden on the patient, doctor, nurse, and their assistants is reduced, and there is no transfer time. The obtained CT image leaves room for improvement. That is, in the above-mentioned X-ray imaging apparatus, the X-ray tube apparatus moves in the direction around the rotation axis of the rotating plate. This means that the position on the rotary plate of the X-ray tube device is switched between the angiographic image capture and the CT image capture in the direction around the rotary plate axis.

In general, the reproducibility of the relative positional relationship between the X-ray tube apparatus (focal point) and the detector for X-ray CT imaging (X-ray detector) is difficult, especially in the direction around the rotating plate axis.
On the other hand, the X-ray detector has a large number of channels arranged at minute intervals in the direction around the rotating plate axis. For this reason, an error occurs in the relative position around the rotation plate axis between the X-ray tube device and the X-ray detector between the angiographic image capturing and the CT image capturing, causing a streak artifact in the obtained CT image,
This causes a problem of deteriorating the spatial resolution.

An object of the present invention is to provide an angiographic image and an X-ray C
When any one of the T images can be selectively acquired, the installation space and the installation weight of the entire apparatus are reduced by half, the operation is facilitated, and the object between the angiographic imaging and the CT imaging is obtained. An object of the present invention is to provide an X-ray imaging apparatus capable of reducing the burden on (patients) and nurses, reducing the time, and improving the image quality of the obtained CT image.

[0008]

SUMMARY OF THE INVENTION The object of the present invention is to provide a rotating plate having an opening through which a subject is inserted at a central portion thereof, and a rotating plate having a surface sandwiching the opening. An X-ray tube apparatus and an X-ray CT image capturing detector, an X-ray angiographic image capturing detector supported by the rotating plate and arranged to be replaceable with the X-ray CT image capturing detector, X
An X-ray collimator device provided at an X-ray emission opening of the X-ray tube device and having an aperture function for X-ray CT image capturing and X-ray angiographic image capturing; a focal position of the X-ray tube device or the X-ray blood vessel; By moving the position of the contrast image capturing detector, it is determined which of the X-ray CT image capturing detector and the X-ray angiographic image capturing detector is to be opposed to the focal point of the X-ray tube apparatus. In an X-ray imaging apparatus comprising an opposing relationship switching setting means for arbitrarily setting switching, the X-ray tube device, the X-ray collimator device or each of the detectors changes position before and after the switching setting by the opposing relationship switching setting device. Is achieved, the position change is made only in the direction of the rotation axis of the rotary plate.

According to this, the X-ray tube device, the X-ray collimator device, or each detector is an X-ray CT image capturing detector or X-ray detector.
The position change before and after the switching by the facing relationship switching setting means for arbitrarily switching which of the detectors for X-ray angiography imaging and the focal point of the X-ray tube device are set only in the rotation axis direction of the rotating plate. Thus, there is no change in the position of the rotating shaft in the direction around the axis. Accordingly, there is no error in the relative position of the X-ray tube device and the X-ray detector in the direction around the rotation plate axis between the angiographic image photographing and the CT image photographing, and a streak artifact is generated in the obtained CT image, The resolution is not degraded. In addition, any one of the X-ray CT image detection signal and the X-ray angiographic image detection signal is selectively acquired by one X-ray tube apparatus / detector rotation support mechanism including a rotating plate. It is configured to be possible,
Japanese Patent Application Laid-Open No. 6-269 describes a method for reducing the installation space and the installation weight of the whole apparatus by half, facilitating the operation, reducing the burden on patients and nurses between angiographic imaging and CT imaging.
No. 437 can be realized in the same manner.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a first embodiment of an X-ray imaging apparatus according to the present invention at the time of X-ray angiography imaging, and FIG.
(B) is a diagram also shown from the right side (a circuit portion is omitted). 2A and 2B are configuration diagrams showing the first embodiment at the time of X-ray CT imaging, and FIG. 2A is a diagram showing the gantry portion from the front, and FIG. 2B is a diagram showing the same from the right side (both are circuit portions). Omitted).

In FIGS. 1 and 2, reference numeral 1 denotes a scanner having a rotating plate, which will be described later, which constitutes a main structure of an X-ray tube apparatus / detector rotation support mechanism. Reference numeral 2 denotes a rotary plate having an opening 5 through which a subject (not shown) is inserted at the center thereof, and 3 and 7 are disposed opposite to each other on the plate surface of the rotary plate 2 at positions sandwiching the opening 5. A single-focus X-ray tube device and an X-ray CT imaging detector 4 are X-rays provided at an X-ray emission port of the X-ray tube device 3.
This is an X-ray collimator apparatus having a diaphragm function for X-ray CT imaging and X-ray angiography imaging. Reference numeral 6 denotes a detector for imaging an X-ray angiographic image composed of a planar sensor (two-dimensional sensor), and reference numeral 7 denotes a detector 7 for imaging an X-ray CT image composed of an ionization chamber or a semiconductor. The detector 6 for X-ray angiography imaging is supported by the rotating plate 2 via a link mechanism or the like described later, and can face the focal point f of the X-ray tube apparatus 3 instead of the detector 7 for X-ray CT imaging. .
Reference numeral 20 denotes an opposing relationship switching setting unit, which is a focal point f of the X-ray tube device 3.
By moving the position or the position of the detector 6 for X-ray angiography imaging, the detector 6 for X-ray CT imaging or the detector 7 for X-ray angiography imaging and the X-ray tube device 3 are moved.
Is set to be arbitrarily switched to face the focal point f.

Here, the apparatus of the present invention converts any one of the X-ray CT image detection signal 9 and the X-ray angiographic image detection signal 8 into a single X-ray tube apparatus provided with the rotating plate 2. -Can be selectively acquired by the detector rotation support mechanism (scanner 1). In this case, the X-ray tube device 3 and the X-ray collimator device 4
Alternatively, the detectors 6 and 7 are configured such that when a position change occurs before and after the switching setting by the facing relationship switching setting means 20, the position change is only in the direction of the rotation axis of the rotating plate 2. Here, the position of the X-ray emission port of the X-ray collimator device 4 and the position of the detector 6 change before and after the switching setting.
They are configured such that the position change is made only in the axial direction of the rotating plate.

This will be described below with reference to FIGS. FIGS. 3 to 5 are side views showing the X-ray tube device 3 and the X-ray collimator device 4 in FIGS. 1 and 2, respectively. FIG. 3 shows the device at rest, and FIG. 4 shows FIG. 5 shows an X-ray CT image photographing, and FIG. 5 shows an X-ray angiographic image photographing similarly to FIG. In the first embodiment, X
The X-ray tube device 3 (focal point f) is fixed, and the detector 6 and the X-ray collimator device 4 (X-ray emission ports 16a and 16b) move to any one of the detectors 6 and 7 and the X-ray tube device. 3 can be arbitrarily set to be opposed to the focal point f.
Any one of the line CT image detection signal 9 and the X-ray angiographic image detection signal 8 is obtained.

As shown in FIGS. 3 to 5, the X-ray collimator apparatus 4 has X-ray emission ports 16a and 16b for X-ray CT imaging and X-ray angiography imaging arranged in the axial direction of the rotating plate. The X-ray emission ports 16a and 16b are selectively provided so as to be able to selectively face the focal point f of the X-ray tube device 3, in other words, the X-ray emission port 3a. Here, the X-ray emission port 16
a and 16b are formed on the X-ray shielding plate 16 arranged on the X-ray emission port 3a side of the X-ray tube device 3, and have apertures 17 and 18. The diaphragm 17 sets the slice thickness when taking an X-ray CT image, and the diaphragm 18 sets the X-ray irradiation field when taking an X-ray angiographic image. The X-ray emission ports 16a and 16b provided with the apertures 17 and 18 are connected to the collimator frame 14.
Can be moved only in the axial direction of the rotating plate by the moving motor 15 supported by the motor.

As can be seen from FIGS. 1 and 2, the detector 6 for X-ray angiographic imaging is opposed to the X-ray tube apparatus 3 above the detector 7 for X-ray CT imaging (opposing the focal point f). Position). Here, a link mechanism 21 including a drive source 22 and an arm 23 is configured to be able to advance and retreat to a position facing the X-ray tube device 3 above the detector 7.
This detector 6 is also configured such that when a position change occurs before and after the switching setting, the position change is only in the direction of the rotation axis of the rotating plate 2. Here, the retracted position of the detector 6 is a position near the side surface of the detector 7 opposite to the rotating plate 2 side,
A change in position occurs by a predetermined distance from the approach position in the axial direction of the rotary plate. However, the position has not changed in the direction around the axis of the rotating plate 2.

When the X-ray CT image is photographed, the opposing relationship switching setting means 20 sets the X-ray CT image photographing X-ray of the X-ray collimator 4.
The X-ray emission port 16a is set at the focal point f of the X-ray tube device 3, in other words, X
The detector 6 for X-ray angiography imaging is retracted from the X-ray tube apparatus-facing position (opposite to the focal point f) above the X-ray CT imaging detector 7 (FIG. 2). 4), the X-ray CT image detection signal 9 can be obtained from the X-ray CT image capturing detector 7. Further, at the time of X-ray angiography imaging, the X-ray angiography X-ray of the X-ray collimator device 4 is used.
The X-ray emission port 16b is made to face the X-ray emission port 3a, and the detector 6 for X-ray angiography imaging is made to enter a position facing the X-ray tube device above the detector 7 for X-ray CT imaging (FIG. 1). ,
The X-ray angiographic image detection signal 8 can be obtained from the X-ray angiographic image capturing detector 6 (see FIG. 5).

That is, in the above-described first embodiment, when an X-ray angiographic imaging is instructed from a single console (not shown),
In response to this, the facing relationship switching setting means 20 drives the moving motor 15 of the X-ray collimator device 4 and the drive source 22 of the link mechanism 21 of the X-ray angiographic image capturing detector 6 toward the X-ray angiographic image capturing side. I do. As a result, the X-ray angiographic imaging detector 6 enters the X-ray tube device facing position (the focal point f-facing position) above the X-ray CT image capturing detector 7, and the X-ray tube device 3
1 (see FIG. 1), and the X-ray emission port 16b for X-ray angiographic imaging of the collimator device 4 faces the X-ray emission port 3a of the X-ray tube device 3 (see FIG. 5). Accordingly, an X-ray beam (cone beam) XBb for angiographic imaging is emitted from the collimator device 4 by the X-ray output from the X-ray tube device 3, and the subject (see FIG. (Not shown). Thus, an X-ray angiographic image detection signal 8 is obtained from the X-ray angiographic image capturing detector 6.

Next, when an X-ray CT image photographing is instructed from the console, the facing relationship switch setting means 20 receives the X-ray CT image.
The driving motor 22 of the X-ray collimator device 4 and the drive source 22 of the link mechanism 21 of the detector 6 for X-ray CT imaging are connected to the X-ray C
It is driven to the T image photographing side. Thereby, the detector 6 for X-ray angiography imaging is retracted from the position facing the X-ray tube apparatus above the detector 7 for X-ray CT imaging, and the X-ray CT imaging detector 7 is moved to the X-ray tube apparatus 3. 2 (see FIG. 2), and the X-ray emission port 16a for X-ray CT imaging of the collimator device 4 faces the X-ray emission opening 3a of the X-ray tube device 3 (see FIG. 4). Therefore, the X-ray output from the X-ray tube device 3 causes the collimator device 4 to output an X-ray CT imaging X-ray beam (fan beam).
XBa is emitted and irradiates a subject (not shown) inserted into the opening 5 of the rotating plate 2. Thereby, X-ray CT
An X-ray CT image detection signal 9 is obtained from the image capturing detector 7.

The X-ray angiographic image detection signal 8 is supplied to a cone beam calculator 11 of an image calculator 10 and subjected to image calculation processing, and an X-ray angiographic image (perspective image) is displayed on a display device 13.
Will be displayed as Further, the X-ray CT image detection signal 9 is provided to the CT calculator 12 of the image calculation unit 10, subjected to image calculation processing, and displayed on the display device 13 as an X-ray CT image.

FIG. 6 is a block diagram showing the second embodiment of the X-ray imaging apparatus according to the present invention at the time of X-ray CT imaging.
(A) is a view showing the gantry portion from the front, and (b) is a view showing the same from the right side (both circuit portions are omitted). FIG. 7 is a configuration diagram showing the second embodiment when an X-ray angiographic image is photographed, and is a diagram showing a gantry portion from the right side (a circuit portion is omitted).

FIGS. 8 to 10 are side views showing the X-ray tube device 3 and the X-ray collimator device 4 in FIGS. 6 and 7, respectively. FIG. FIG. 10 shows an X-ray CT image photographing as in FIG. 7B, and FIG. 10 shows an X-ray angiographic image photographing as in FIG. 6 to 10, the same reference numerals as those in FIGS. 1 to 5 indicate the same or corresponding parts.
Reference numeral 19 denotes a motor for moving the X-ray tube device 3 supported on the collimator frame 14. The X-ray tube device 3 can be moved only in the rotating plate axial direction A by the moving motor 19. In the second embodiment, the detector 6 and the X-ray collimator device 4 (the X-ray emission port 16) are opposite to the first embodiment.
a, 16b) are fixed, and the X-ray tube apparatus 3 (focal point f) moves to arbitrarily switch which of the detectors 6 and 7 and the focal point f of the X-ray tube apparatus 3 face each other. It is set so that any one of the X-ray CT image detection signal 9 and the X-ray angiographic image detection signal 8 is obtained.

That is, the X-ray tube device 3 is configured to be mutually movable by a moving motor 19 at two locations spaced at a predetermined distance in the axial direction of the rotating plate. The X-ray collimator device 4 includes an X-ray CT imaging X-ray emission opening 16a facing the X-ray CT imaging imaging detector 7, and X-rays spaced from the X-ray emission opening 16a by a predetermined distance in the direction of the rotary plate axis. An X-ray emission port 16b for radiographic angiography is provided. Further, the X-ray angiographic imaging detector 6 is provided with an X-ray angiographic imaging X-ray of the X-ray collimator device 4 on the side opposite to the rotating plate 2 side of the X-ray CT imaging detector 7. It is arrange | positioned facing the radiation opening 16b.

Opposing relationship switching setting means 20 (see FIG. 1)
Is to move the X-ray tube device 3 to a position closer to the rotating plate 1 and to focus the focus f, in other words, the X-ray emission port 3a, on the X-ray CT image of the X-ray collimator device 4 at the time of X-ray CT image photography. The detector 7 is opposed to the X-ray CT image capturing detector 7 via the X-ray emission port 16a (see FIGS. 6B and 9), and an X-ray CT image detection signal can be obtained from the detector 7. Further, at the time of X-ray angiography imaging, the X-ray tube device 3 is moved to a position farther from the rotating plate 1 so that the focal point f, in other words, the X-ray emission port 3a is moved to the X-ray emission port.
The X-ray angiographic image capturing X-ray emission port 16b of the X-ray collimator device 4 is opposed to the X-ray angiographic image capturing detector 6 (see FIGS. 7 and 10). It is configured so that a contrast image detection signal can be obtained.

In the above-described second embodiment, the X-ray collimator device 4 (X-ray collimator 4) such as the reciprocating mechanism (such as the link mechanism 21) of the detector 6 for X-ray angiographic imaging and the moving motor 15 as in the first embodiment is used. There is an advantage that the line radiation ports 16a and 16b) a moving mechanism is not required.

FIGS. 11 to 13 are side views showing an X-ray imaging apparatus according to a third embodiment of the present invention, in which an X-ray tube apparatus and an X-ray collimator apparatus are taken out. FIG. 12 shows the case of taking an X-ray CT image, and FIG. 13 shows the case of taking an X-ray angiographic image. 11 to 13, the same reference numerals as those in FIGS. 8 to 10 indicate the same or corresponding parts. 31 is an X-ray tube device having a plurality of focal points, here 2
A stereo X-ray tube device having two focal points f1 and f2. The two focal points f1 and f2 are arranged on the plate surface of the rotating plate 2 (see FIG. 1) so as to be aligned in the axial direction of the rotating plate. . In the third embodiment, a stereo X-ray tube device 31 is used instead of the single focus X-ray tube device 3 in the second embodiment described above.
The motor 19 for movement is eliminated. In this case, X
The positions and intervals of the X-ray emission port 16a for X-ray CT image capturing and the X-ray emission port 16b for X-ray angiography image capture are configured in accordance with the positions and intervals of the two focal points f1 and f2 of the stereo X-ray tube device 31. You.

Opposing relationship switching setting means 20 (see FIG. 1)
Is located on one side of the stereo X-ray tube device 31 facing the X-ray CT imaging detector 7 via the X-ray CT imaging X-ray emission port 16a of the X-ray collimator device 4 during X-ray CT imaging. X-rays are generated using the focal point f1, and an X-ray CT image detection signal can be obtained from the X-ray CT image detector 7. Further, at the time of X-ray angiography imaging, the stereo X-ray tube device 31 facing the X-ray angiography imaging detector 6 via the X-ray angiography imaging X-ray emission port 16b of the X-ray collimator device 4 is used. X-rays are generated using the other focal point f2, and an X-ray angiographic image detection signal can be obtained from the X-ray angiographic image detector 6.

In the third embodiment, the X-ray tube apparatus 3 is set between the time of X-ray CT imaging and the time of X-ray angiography imaging.
X-ray CT by moving the positions of the focal points f1 and f2 used
Although there is switching of the facing relationship with the imaging detector 7 and the X-ray angiographic imaging detector 6, there is no movement of the X-ray tube device 31, the X-ray collimator device 4, or the detectors 6, 7 themselves. There is an advantage that the configuration is simplified.

In the second embodiment and the third embodiment, similarly to the first embodiment (see FIG. 1), the obtained X-ray angiographic image detection signal 8 is converted into a cone beam calculator 11 of an image calculator 10. Image processing is performed on the display device 1
3 is displayed as an X-ray angiographic image (perspective image). Further, the X-ray CT image detection signal 9 is provided to the CT calculator 12 of the image calculation unit 10, subjected to image calculation processing, and displayed on the display device 13 as an X-ray CT image.

It is to be noted that some X-ray tube apparatuses have a plurality of focal points without being so-called stereo X-ray tube apparatuses, such as those having a single focal point and those having a large focal point and a small focal point.
It goes without saying that the single focus X-ray tube device can be replaced with such a multiple focus X-ray tube device.

[0030]

As described above, according to the present invention, when any one of an angiographic image and an X-ray CT image can be selectively obtained, the installation space and the installation In addition to reducing the weight by half, facilitating the operation, reducing the burden on the subject and nurses between angiographic imaging and CT imaging, reducing time, etc., it also causes streak artifacts in the obtained CT image. And the image quality of the CT image can be improved without deteriorating the spatial resolution.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a first embodiment of the device of the present invention at the time of capturing an X-ray angiographic image.

FIG. 2 is a configuration diagram showing the first embodiment at the time of X-ray CT imaging.

FIG. 3 is a side view showing the X-ray tube device and the X-ray collimator device in FIGS. 1 and 2 (when the device is at rest).

FIG. 4 is a side view showing the X-ray tube device and the X-ray collimator device in FIGS. 1 and 2 (at the time of X-ray CT imaging).
It is.

FIG. 5 is a side view (at the time of capturing an X-ray angiographic image) showing an X-ray tube device and an X-ray collimator device portion in FIGS. 1 and 2 taken out therefrom;

FIG. 6 is a configuration diagram showing a second embodiment of the present invention at the time of X-ray CT imaging.

FIG. 7 is a configuration diagram showing the second embodiment at the time of capturing an X-ray angiographic image.

8 is a side view showing the X-ray tube device and the X-ray collimator device portion in FIGS. 6 and 7 (when the device is at rest).

9 is a side view showing the X-ray tube device and the X-ray collimator device in FIGS. 6 and 7 (when X-ray CT images are taken).
It is. It is.

10 is a side view (at the time of capturing an X-ray angiographic image) of an X-ray tube device and an X-ray collimator device in FIGS.

FIG. 11 is a side view (when the apparatus is at rest) showing a third embodiment of the apparatus of the present invention with an X-ray tube apparatus and an X-ray collimator apparatus part taken out.

FIG. 12 is a side view (at the time of capturing an X-ray CT image) showing an X-ray tube device and an X-ray collimator device in a third embodiment of the present invention.

FIG. 13 is a side view (at the time of capturing an X-ray angiographic image) showing an X-ray tube device and an X-ray collimator device portion of the third embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Scanner, 2 ... Rotating plate, 3 ... Single focus X-ray tube device,
4 X-ray collimator device, 5 opening, 6 X-ray angiographic image capturing detector, 7 X-ray CT image capturing detector, 8
X-ray angiographic image detection signal, 9 ... X-ray CT image detection signal, 1
0: Image calculation unit, 11: Cone beam calculator, 12: C
T computing unit, 13 display device, 14 * collimator frame, 15 motor for moving the X-ray emission port of the X-ray collimator device, 16 ... X-ray shielding plate, 16a, 16b ... X-ray emission port of the X-ray collimator device, 17, 18 ... diaphragm, 19 ... motor for moving the X-ray tube apparatus, 20 ... facing relation switching setting means, 21
... Link mechanism, 22 ... Drive source, 23 ... Arm, 31 ... Stereo X-ray tube device, f, f1, f2 ... Focal, XBa ... X-ray CT image X-ray beam (fan beam), XBb ... Angiogram X-ray beam (cone beam) for radiography.

Claims (4)

[Claims] 1. An X-ray tube apparatus and an X-ray tube, wherein an opening through which a subject is inserted is formed at a central portion, and an X-ray tube device and an X-ray tube are disposed opposite to each other at a position sandwiching the opening on the plate surface of the rotating plate. A detector for CT imaging, an X-ray angiographic imaging detector supported by the rotating plate and replaceably disposed with the X-ray CT imaging detector, and X-ray radiation of the X-ray tube apparatus An X-ray collimator provided in the mouth and having an aperture function for X-ray CT imaging and X-ray angiography imaging, and a focus position of the X-ray tube apparatus or the X-ray angiography imaging detector An opposing relationship for arbitrarily switching and setting which of the detector for X-ray CT imaging and the detector for X-ray angiography imaging is to be opposed to the focal point of the X-ray tube apparatus by moving a position. An X-ray imaging apparatus comprising: a switching setting unit; The X-ray collimator device or each of the detectors is configured such that, when a position change occurs before and after the switching setting by the facing relationship switching setting means, the position change is only in the rotation axis direction of the rotating plate. X
X-ray equipment. 2. The X-ray collimator device according to claim 1, wherein an X-ray emission port for X-ray CT image capturing and an X-ray emission port for X-ray angiographic image capturing are juxtaposed in the direction of the rotation axis of the rotary plate. The X-ray angiographic imaging detector is movable from the position facing the X-ray emission port to a position that does not interfere with the X-ray detection of the X-ray CT imaging detector. 2. The method according to claim 1, wherein
An X-ray imaging apparatus according to claim 1. 3. The X-ray tube device is configured to be freely movable at two positions spaced apart from each other by a predetermined distance in the direction of the rotation axis of the rotating plate, and the X-ray collimator device faces the detector for X-ray CT imaging. An X-ray CT imaging X-ray emission port and an X-ray angiography imaging X-ray emission port spaced a predetermined distance from the X-ray emission port in the direction of the rotation axis of the rotating plate; The detector includes an X-ray CT imaging detector and an X-ray angiographic imaging X-ray detector of the X-ray collimator.
The X-ray imaging apparatus according to claim 1, wherein the X-ray imaging apparatus is arranged to face the radiation emitting port. 4. An X-ray tube apparatus includes a plurality of focal points, and two predetermined focal points among the focal points are arranged on a plate surface of the rotary plate so as to be aligned in a direction of a rotation axis of the rotary plate. In addition, the X-ray collimator device includes an X-ray CT imaging X-ray emission port facing one of the two focal points and a rotating plate facing the other of the two focal points. X to do
The X-ray imaging apparatus according to claim 1, further comprising an X-ray emission port for X-ray angiography imaging.