JPH07124141A - X-ray radiographing device with high-speed continuous photographing device - Google Patents

Abstract

PURPOSE:To enable the driving control so as to coincide the photographing position of the high-speed continuous photographing device and the X-ray radiation field of the X-ray tube and enable the test of making the images of head, abdomen, blood vessel by providing the space for inserting and installing the high-speed continuous photographing device on the bed with the X-ray tube and the cassetteless high-speed camera installed. CONSTITUTION:In an X-ray radiography apparatus 11, an X-ray tube 2 is arranged upward with a bed 1 put between and a cassetteless high-speed camera 3 and a see- through device 4 are incorporated at the bottom. When making an image of the blood vessel of the circulatory system, the bed 1 is made still in the horizontal state and the X-ray tube 2, the cassetteless high-speed camera 3, and see-through device 4 are moved at the foot side of a testee 78. With the movement, a film changer 72 is installed in a space 12 for inserting and installing a film changer (high-speed continuous photographing device) formed at the bottom of the bed 1 and the X-ray tube 2 is correctly rotated so as to make the X-ray radiation direction coincident to the photographing position of the film changer 72 in the space 12. Thus, the preparation for photographing is completed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a fluoroscopic radiography equipped with a high-speed continuous imaging apparatus, which is suitable for high-speed continuous imaging in circulatory system imaging examinations such as head and abdominal angiography examinations, in addition to gastrointestinal examination It is about the platform.

[0002]

2. Description of the Related Art An X-ray fluoroscopic imaging table has been introduced in many facilities for diagnosis centering on gastrointestinal angiography.
There is a facility that uses a bed of a fluoroscopic imaging table and a fluoroscopic device, and is also used for contrast examination of the circulatory system.

Conventionally, when the X-ray fluoroscopic imaging table is used for the contrast examination of both the digestive tract and the circulatory system, the method shown in FIGS. 7 and 8 has been generally used. FIG. 7 shows a circulatory system in addition to an X-ray fluoroscopic imaging table 71 (which includes a bed 1, an X-ray tube device 2, a cassette telephotographing device 3, a fluoroscopic device 4 and a tube column 5) in the imaging room. A high-speed continuous imaging device (hereinafter referred to as a film changer) 72 for angiography,
This is composed of an X-ray tube device 73 and an X-ray tube supporter 74 exclusively for high-speed continuous imaging.

In the configuration of FIG. 7, in the case of a contrast examination of the digestive tract, as shown in FIG. 9, the examination is carried out by repeatedly raising and lowering the bed 1 in the imaging room 91. . During this inspection, the film changer 72 and the X-ray tube device 73 suspended from the ceiling 75 by the X-ray tube supporter 74 are moved so as not to interfere with the inspection. That is, the film changer 72 can be placed on the film changer carriage 76 and moved to another place, and the X-ray tube device 73 can run on the rail 77 provided on the ceiling 75 and can be retracted. It has become.

When performing a contrast inspection of the circulatory system, the X-ray fluoroscopic imaging table 71 is used in a horizontal state. First, the film changer 7 mounted on the film changer carriage 76.
2 is a bed 1 located on the head side of the subject 78 shown in FIG.
Insert it on the underside of and prepare. Next, enter the examination, but if a catheter (not shown) used for contrast examination of the circulatory system is inserted into the blood vessel, it may start from the neck, the upper arm, or the thigh depending on the examination site. The catheter is inserted into the blood vessel, the catheter is delivered to the examination site, and the contrast agent is injected. The fluoroscopy device 4 of the X-ray fluoroscopic imaging stand 71 is moved to the position where this catheter is inserted (the image system movement in which the X-ray tube device 2 and the fluoroscopy device 4 move in conjunction with the body axis direction of the subject 78).
Alternatively, the bed 1 is moved to the fluoroscopic position of the X-ray fluoroscopic imaging table 71, and the catheter is inserted into the blood vessel while performing fluoroscopic observation. Next, in order to smoothly send the catheter to the examination site along the blood vessel, the bed 1 is moved as necessary to see through the site and check.

Next, after inserting the catheter to the inspection site, the bed 1 is moved toward the head of the subject 78, and the inspection site is aligned with the photographing position of the film changer 72.
Furthermore, the X-ray tube device 73 on the ceiling side at the retracted position is made to coincide with the photographing position of the film changer 72, and the preparation for photographing is completed. When the contrast agent is injected, X-rays are emitted from the X-ray tube device 73 on the ceiling side in synchronization with the injection operation, and the flow of the contrast agent in the blood vessel is continuously photographed by the film changer 72.

As described above, in FIG. 7 showing an example of a method of using the X-ray fluoroscopic imaging table 71 for contrast examinations of both the digestive tract and the circulatory system, in FIG. In addition to the arranged X-ray tube device 2, a film changer 7
2, an X-ray tube device 73 dedicated to the film changer, and an X-ray tube supporter 74 that suspends the X-ray tube device 73 from a ceiling 75.

On the other hand, the film changer 72 and the X
A film changer 72 in which the X-ray tube device 2 attached to the X-ray fluoroscopic imaging table is inserted in the lower part of the bed 1 instead of the X-ray tube device 73.
The X-ray tube device 2 is attached to the subject 7 in order to match the imaging position of the subject.
Driving means (not shown) for inclining to the head side of 8 and correcting and rotating the X-ray irradiation direction of the X-ray tube device 2 counterclockwise.
There is also an X-ray fluoroscopic imaging stand 81 that can adjust the X-ray irradiation field to the imaging position of the film changer 72. When the X-ray fluoroscopic imaging stand 81 and the film changer 72 are combined, the film changer 72 is simply arranged as shown in FIG.

As described above, in the case of angiographic imaging, high-speed continuous imaging that follows the speed of blood is required to follow the flow of the contrast medium injected into the blood vessel. As a general example, there is a high-speed continuous photographing device 72, which is generally called a film changer, for angiographic photographing. The film changer 72 supplies the film instantaneously (5 to 6 sheets per second) and can continuously capture the flow of the contrast medium in the blood vessel.

On the other hand, in the case of a gastrointestinal angiography examination, since an organ is imaged from all directions, an examination method is adopted in which an image is taken while observing the imaged site with fluoroscopy each time.
The image capturing apparatus has a shape in accordance with this method, and at present, the film supply time for the digestive tract is generally about 6 to 8 seconds to about 1 sheet.

[0011]

As described above, when the X-ray fluoroscopic imaging table is used for the contrast examination of both the digestive tract and the circulatory system, the method in which the film changer 72 is combined is adopted. The size of the imaging room where the X-ray fluoroscopic imaging tables 71 and 81 are installed becomes a problem as a condition of the configuration. In the case of the configuration shown in FIG. 7, the X-ray tube device 73 is mounted on the ceiling 75.
An X-ray tube support 74 for suspending the X-ray tube is arranged to secure an evacuation space that does not hinder the operation range of the X-ray fluoroscopic imaging stand 71, and because of the relationship with the X-ray tube support 74 suspended from the ceiling, Position is restricted.

In the case of FIG. 8, since there is no X-ray supporter 74 suspended from the ceiling 75 of FIG. 7, it is possible to make the photographing room smaller than that of FIG. 7. However, the film changer 72 is attached to the subject 7 on the X-ray fluoroscopic imaging table 81.
Since it is installed below the lying bed 1 of 8, the bed 1 must be moved in the head direction to the photographing position of the film changer 72. Particularly, in the case of an angiographic examination of the abdomen, when the height of the subject 78 is large, the subject 78 of the bed 1 is
A large amount of movement in the head direction is required. In the present circumstances,
The maximum overhang stroke of the bed 1 is generally about 120 cm (see FIG. 9).

Taking the X-ray fluoroscopic imaging table 81 shown in FIG. 8 as an example, in the gastrointestinal imaging examination, the slide of the bed 1 in the axial direction of the subject is fixed and the image system (X-ray tube device 2 Since the quick-photographing device 3 and the fluoroscopic device 4) have a mechanism capable of interlocking with each other in the axial direction of the body of the subject, the bed 1 does not have to be moved for alignment with the imaging region. Since the X-ray tube device 2 arranged above the bed 1 is tilted horizontally and reversely tilted from the standing position by the operation of placing and inclining the subject 78 and tilting the subject 78, the trajectory of the X-ray tube device 2 is changed. The size of the shooting room is decided. In the case of the X-ray fluoroscopic imaging table 81 here, a size of about 360 cm or more (see FIG. 9) is required.

It is installed in the center of the photographing room and is in a horizontal state as shown in FIG.
As shown in, when the bed is extended 120 cm toward the head side, X
When the length (bed length) of the fluoroscopic imaging stand 81 is set to 210 cm and 120 cm is overhanged and a gap of about 5 cm is secured to the wall, the distance from the center of the imaging room to the wall on the subject's head side is 230 cm, and at least When combining the film changer 72, it is necessary to secure more 50 cm to the wall on the head side, and if the size of the photographing room is 230 cm + 180 cm and 410 cm or more, the angiography of the abdomen due to the combination of the film changer. I can't shoot.

However, most of the radiographing rooms in which the X-ray fluoroscopic radiographing table 81 for the digestive tract is installed are narrow radiographing rooms, and in practice, the use of the film changer 72 in combination is abandoned from the beginning. is there.

The object of the present invention is to provide a small photographing room,
Not only can a conventional X-ray fluoroscopy stand for digestive organs be combined with a film changer to perform angiographic examination of the head, but also a high-speed continuous imaging X-ray fluoroscopy stand that can also perform angiography examination of the abdomen. To provide.

[0017]

The object is to dispose an X-ray tube device on the upper side of a bed and to mount a cassette-telegraphing device and a see-through device on the lower side of the bed. In an X-ray fluoroscopic imaging table in which an X-ray tube device, a cassette-to-flash imaging device, and a fluoroscopic device move together, the bed has a high-speed continuous imaging device insertion and installation space for inserting and installing a high-speed continuous imaging device, and When the high-speed continuous imaging device is inserted and installed in the space, a driving means is provided for driving the X-ray tube device so that the imaging position of the high-speed continuous imaging device and the X-ray irradiation field of the X-ray tube device match. It is achieved by

[0018]

Operation: The high-speed continuous image capturing device is inserted into the bed, and the high-speed continuous image capturing device is inserted and installed in the installation space. The drive means drives the X-ray tube device so that the imaging position of the high-speed continuous imaging device inserted and installed in the space matches the X-ray irradiation field of the X-ray tube device.

According to this, the amount of movement of the bed to the head rest side can be suppressed to support abdominal angiography examination, and it is used in the conventional X-ray fluoroscopic examination table for digestive organ contrast examination. Even in a small radiography room, just by preparing a film changer, it becomes possible to perform not only a cerebral angiography examination of the circulatory system but also an abdominal angiography examination.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are overall configuration diagrams showing an embodiment of an X-ray fluoroscopic imaging stand equipped with a high-speed continuous imaging apparatus according to the present invention.
Here, a state in which the film changer of the X-ray fluoroscopic imaging stand 11 is inserted and the film changer 72 is inserted and installed (installed) in the installation space 12 is shown.

The illustrated X-ray fluoroscopic imaging table 11 is a so-called over-table tube type in which an X-ray tube device 2 is arranged above the bed 1 and a cassette telegraph device 3 and a fluoroscopy device 4 are installed below it. X-ray cassette telescope.

The X-ray fluoroscopic imaging table 11 can be tilted in the horizontal direction and then tilted to the head side of the subject 78 after the subject 78 is placed in an upright position (raised state) and can be tilted backward. This operation is called a tilting operation. The raising and lowering operation is performed by driving the small gear 6 and rotating the large gear 7, and the raising and lowering operation (rotation) of 180 ° is possible.

The movement of the subject 78 in the body axis direction is X
It is possible to move the subject 78 on the bed 1 by moving the X-ray tube device 2, the cassette telegraph device 3 and the fluoroscopic device 4. Alternatively, the bed 1 can be moved independently as in the case shown in FIGS. 7 and 8.

Further, as shown in FIG. 2, the tube column 8 supporting the X-ray tube device 2 is tilted toward the head side of the subject 78 as in FIG. 8, and the X-ray tube device 2 is rotated clockwise. The X-ray irradiation direction is adjusted to the photographing position of the film changer 72 by providing a driving means (not shown) for correcting and rotating the X-ray irradiation direction to the photographing position of the film changer 72 installed in the space 12. it can. This movement is called an oblique angle operation.

In the device of the present invention shown in FIGS. 1 and 2,
When performing angiographic imaging of the circulatory system, first, the bed 1 is stopped in a horizontal state, and the X-ray tube device 2, the cassette telegraph device 3, and the fluoroscopic device 4 are moved to the foot side of the subject 78. By this movement, the film changer 72 formed in the lower part of the bed 1 is inserted, and the film changer 72 is installed in the installation space 12.
Are installed (see FIG. 1). After that, the oblique angle operation is performed, the X-ray irradiation direction (X-ray irradiation field) of the X-ray tube device 2 is adjusted to the photographing position of the film changer 72, and the photographing preparation is completed (see FIG. 2).

Next, the structure required for mounting the film changer 72 on the X-ray fluoroscopic imaging stand 11 is shown in FIG.
~ It demonstrates with reference to FIG.

FIGS. 3 and 4 are a side view and an enlarged exploded perspective view of the film changer mounting portion in FIGS. A left guide rail 32 is fixed to the head side end of a support frame 31 (in the space 12) that supports the cassette telephotographing device 3 of the X-ray fluoroscopic imaging table 11, and on the side where the film changer tray 33 is inserted. The guide plate 34 is fixed. A right guide rail 37 is fixed to a position facing the left guide rail 32 on an end surface of the cassette telephotographing device 3 movably supported on a rail 35 fixed to the support frame 31 via rollers 36. There is. Further, the left and right guide rails 32 and 37 are formed with stopper grooves 38 at their rear end sides, respectively. The above is the film changer 72
This is a configuration on the side of the X-ray fluoroscopic imaging table 11 that is necessary when mounting the.

Normally, the film changer 72 is placed on the film changer carriage 51 shown in FIG. 5 except that it is used in an angiographic examination. The film changer 72
The film changer tray 33 is always placed and fixed integrally on the film changer tray 33, and the film changer tray 33 is placed on a spherical roller 52 protruding from the upper surface of the film changer carriage 51.

The film changer tray 33 includes:
As shown in FIG. 6, guide rails 61 are arranged and fixed in pairs in the front and rear end directions on the back side of the film changer fixing surface. A stopper roller 62 and a leaf spring 63 are provided on both sides of the rear end side of the film changer tray 33. Further, a handle hole 64 is formed in the central portion near the front end of the film changer tray 33.

The configurations of the X-ray fluoroscopic imaging stand 11 side and the film changer tray 33 side have been described above. Next, the operation procedure for inserting the film changer tray 33 into the X-ray fluoroscopic imaging stand 11 side will be described. The operation of each part will be described.

First, when the X-ray fluoroscopic imaging table 11 is placed in a horizontal state and the cassette telegraphing device 3 is retracted to the foot side of the subject 78, the left guide rail 32 fixed to the support frame 31 and When the distance from the right guide rail 37 that moves to the right in the figure widens to reach the insertion dimension of the film changer tray 33 (when the film changer is inserted and the installation space 12 is formed), it automatically stops.

The height of the film changer carriage 51 is X
It is fixed in a state where it is adjusted in advance and aligned with the height position of the left guide rail 32 in the horizontal state of the fluoroscopic imaging stand 11. The film changer carriage 51 is brought close to between the left guide rail 32 and the right guide rail 37, and the left and right guide rails 3 are
Align the position between 2 and 37 with the position of the film changer tray 33. When the positions are aligned, the handle hole 64 of the film changer tray 33 is held, and the film changer tray 33 is pushed into the X-ray fluoroscopic imaging stand 11 side while the film changer 72 is mounted and fixed.

The film changer tray 33 moves on the spherical roller 52 and is passed over the left guide rail 32 and the right guide rail 37 via the stopper roller 62. When the film changer tray 33 is further inserted, the slopes of the left and right guide rails 32 and 37 are increased. At this time, if it is lifted up by the handle hole 64, the weight of the stopper roller 62 protruding from the film changer tray 33 is applied and the stopper roller 62 sinks. When it is further inserted in this state, a pair of guide rails 61 arranged on the back side of the film changer tray 33,
61 is inserted into and guided by a guide plate 34 provided at the insertion position of the support frame 31. When it is further pushed in, the stopper rollers 62, 62 fall into the stopper grooves 38, 38 formed in the left and right guide rails 32, 37, and the positioning of the film changer tray 33 and by extension the film changer 72 is completed.

In the above embodiment, the stopper grooves 38, 38 are used for inserting the film changer tray 33 into the film changer, inserting it into the installation space 12, and fixing it after installation.
Although only the positioning by the stopper rollers 62, 62 has been described, it is preferable in terms of safety to provide a more reliable fixing means. The same applies to fixing the film changer tray 33 on the film changer carriage 51.

[0035]

As described above, according to the present invention, the amount of movement of the bed to the head rest side can be suppressed to a small amount to support abdominal angiography examinations. Even in a small radiography room that was used for an X-ray fluoroscopy table, just by preparing a film changer, it is possible to perform abdominal angiography as well as cerebral angiography of the circulatory system. The effect is that there is no restriction on the gastrointestinal contrast examination. In addition, since there is little overhanging of the bed in the head direction, there is an effect that the anxiety of the subject can be reduced.

[Brief description of drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an X-ray fluoroscopic imaging table of the present invention.

FIG. 2 is an overall configuration diagram showing an embodiment of an X-ray fluoroscopic imaging stand of the present invention.

FIG. 3 is a side view of a film changer mounting portion in FIGS. 1 and 2.

FIG. 4 is an enlarged exploded perspective view of a film changer mounting portion in FIGS. 1 and 2.

FIG. 5 is a front view showing a state in which the film changer is placed on the film changer carriage.

FIG. 6 is a perspective view of a film film changer tray.

FIG. 7 is a device configuration diagram at the time of an angiographic examination using a conventional X-ray fluoroscopic imaging table.

FIG. 8 is a device configuration diagram at the time of an angiographic examination using a conventional X-ray fluoroscopic imaging table.

FIG. 9 is a diagram showing the relationship between the operation of the X-ray fluoroscopic imaging table and the imaging room.

[Explanation of symbols]

1 bed 2 X-ray tube device 3 cassette telegraph device 4 fluoroscopy device 5 tube column 6 small gear 7 large gear 11, 71, 81 X-ray fluoroscopy imaging table 12 film changer insertion, installation space 31 support frame 32 left guide rail 33 film Changer tray 34 Guide plate 35 Rail 36 Roller 37 Right guide rail 38 Stopper groove 38 51,76 Film changer carriage 52 Spherical roller 61 Guide rail 62 Stopper roller 63 Leaf spring 64 Handle hole 71 X-ray fluoroscopic imaging stand 72 Cardiovascular angiography High-speed continuous shooting device for filming (film changer) 73 X-ray tube device dedicated to high-speed continuous shooting 74 X-ray tube support 77 Rail 78 Subject 91 Imaging room

Claims (4)

[Claims] 1. An X-ray tube device is arranged above a bed, and a cassettere shooting device and a see-through device are mounted below the bed, and the X-ray tube device and cassette shooting device are arranged in the longitudinal direction of the bed. In an X-ray fluoroscopic imaging table in which the apparatus and the fluoroscopic apparatus move in conjunction with each other, a high-speed continuous imaging apparatus insertion and installation space for inserting and installing the high-speed continuous imaging apparatus is provided under the predetermined portion of the bed, and the space is provided at high speed. When the continuous imaging device is inserted and installed, the high-speed continuous imaging device is equipped with a drive means for driving the X-ray tube device so that the imaging position and the X-ray irradiation field of the X-ray tube device match. An X-ray fluoroscopic imaging stand equipped with a high-speed continuous imaging device. 2. The high-speed continuous shooting device insertion and installation space,
A space generated by moving the X-ray tube device, the cassette telegraphing device, and the fluoroscopic device to the side of the patient's foot resting part of the bed within the moving range of the X-ray tube device, the cassettette imaging device, and the fluoroscopic device. The X-ray fluoroscopic imaging stand equipped with the high-speed continuous imaging apparatus according to claim 1, wherein 3. The high-speed continuous shooting device is mounted and fixed on a tray, and is inserted into and installed in the installation space of the high-speed continuous shooting device through the tray. An X-ray fluoroscopic imaging stand equipped with the high-speed continuous imaging device described in. 4. A stopper groove is formed in the space for inserting and installing the high-speed continuous shooting apparatus, and a stopper roller is provided in the tray, and the stopper roller falls into the stopper groove, whereby the high-speed continuous shooting apparatus is provided. 4. The high-speed continuous shooting device mounting type X according to claim 3, wherein the high-speed continuous shooting device is inserted and positioned in an installation space.
Fluoroscopic imaging stand.