JPH0998967A - X-ray fluoroscopic photographing equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide X-ray fluoroscopic photographing equipment to give as little a hazard to patients by making preparations in taking X-ray pictures as quick as possible even in taking X-ray fluoroscopic photographs of blood vessels at lower limbs. SOLUTION: After a testee or a patient is placed on a flat plate, plural numbers of the patient's parts are successively irradiated with the X-ray emitted from an X-ray source 2. A transfer means (a bed controlling CPU 11, a spot controlling CPU 12) travels to the relative positions between the X-ray source and the X-ray film for recording the X-ray images of the different positions of the patient at the different positions of the recording films respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an X-ray fluoroscopic imaging apparatus, and more particularly, to an X-ray fluoroscopic imaging apparatus suitable for performing angiography of a lower limb (lower limb angio).

[0002]

2. Description of the Related Art Conventionally, when a lower limb angiography (lower limb angio) is performed using an X-ray fluoroscopic imaging apparatus, a ceiling-supported X
This was achieved by combining the X-ray tube, film changer, and the like, and then step-moving the couchtop of the bed while timing the X-ray irradiation. Here, the lower limb blood vessel angiography refers to performing imaging by inserting a catheter into the lower limb blood vessel of the patient, injecting an imaging agent, and moving the patient while adjusting to the blood flow.

That is, as shown in FIG. 9, an X-ray fluoroscopic imaging apparatus 100 for generally performing relatively large-scale X-ray imaging and a ceiling-holding type for relatively simple X-ray imaging are provided in the same imaging room. The X-ray imaging apparatus 110 is installed separately. Here, 101 is an X-ray tube of the X-ray fluoroscopic imaging apparatus 100, and 111 is an X-ray tube of the ceiling-supported X-ray imaging apparatus 110. Further, 102 is a bed, 103 is a bed of the bed, 1
12 is a film changer.

Then, as shown in FIG. 10, the ceiling-supported X-ray radiographing apparatus 110 is moved to be assembled into a desired system and the operations such as the above-mentioned X-ray exposure are performed to realize a desired lower limb angiography. Was.

That is, in the case of angiography of the lower extremity, first, X
The patient P is laid on the top plate 103 of the radiographic apparatus 100, and the imaging agent injection catheter is inserted into the patient's body. Then, the imaging target part of the lower limb of the patient P is moved to a predetermined position of the ceiling-supported X-ray imaging apparatus 110, the imaging agent is injected into the catheter, and the top plate 103 (that is, patient P) is adjusted while adjusting to the blood flow. An X-ray tube 111 and a film changer 112 were used to image the blood vessels of the lower limbs while moving in steps.

[0006]

However, according to this conventional means, the X-ray tube 10 of the X-ray fluoroscopy apparatus 100 is used.
1 and the X-ray tube 111 of the ceiling-supported X-ray imaging apparatus 110.
Is redundant and wasteful, and the film changer 1
Since it is necessary to move 12 and the like from the original installation position to build a desired system, preparation for photographing is very complicated.

Further, performing the step operation of the top plate 103 with the catheter for injecting the imaging agent and the like inserted into the patient P entails a great risk to the patient P.

[0008] Therefore, an object of the present invention is to provide an X-ray fluoroscopic imaging apparatus which can prepare for X-ray imaging in a short time even in the case of angiography of lower limbs and is less dangerous to the patient. is there.

[0009]

In order to solve the above-mentioned problems, the invention according to claim 1 includes a top plate on which a subject is placed, and an X-ray source for sequentially irradiating a plurality of portions of the subject with X-rays. A film for recording an X-ray image transmitted through the subject and a relative film between the X-ray source and the film so that each X-ray image corresponding to the plurality of portions is recorded in different recording areas of the film. And a moving means for moving the target position.

According to the first aspect of the present invention, the subject is placed on the top plate, and the X-ray source sequentially irradiates the plurality of portions of the subject with X-rays. The X-ray image transmitted through the subject by this exposure is recorded on the film. When recording on this film, the moving means moves the relative position of the X-ray source and the film,
Each X-ray image corresponding to the plurality of portions is recorded in different recording areas of the film.

Therefore, even in the case of angiography of lower extremities, for example,
Imaging can be performed without moving the patient (subject) in which the catheter has been inserted, so that there is no danger to the patient, and since the imaging system is provided in the apparatus in advance, preparation for imaging can be performed in a short time.

According to a second aspect of the present invention, the X-ray source is moved with respect to the subject so as to change a portion to which X-rays are exposed, and the film and the film moving means are provided with the above-mentioned means. It is characterized in that it is provided in a spot imaging apparatus that moves integrally with the movement of the X-ray source.

According to the second aspect of the present invention, the X-ray source is moved with respect to the subject to change the portion to which the X-ray is irradiated, and the film and the film moving means are integrated with the movement of the X-ray source. It is installed in the spot imaging device that moves to the.

Further, the invention according to claim 3 is characterized in that the film moving means moves the film in the spot photographing apparatus in synchronization with the movement of the X-ray exposure site. To do.

According to the third aspect of the present invention, the film moving means moves the film in the spot photographing apparatus in synchronization with the movement of the X-ray exposure site.

According to a fourth aspect of the present invention, a rectangular top plate on which the subject is placed, an X-ray source that irradiates the subject with X-rays, and a film are provided along the lateral direction of the top plate. A film moving unit that moves, a holding moving unit that integrally moves the X-ray source and the film moving unit along the longitudinal direction of the top plate, and X-ray images corresponding to the plurality of portions are different in the film. It is characterized in that it is provided with a control means for controlling the movement of the holding movement means and the film movement means so that the holding movement means and the film movement means are respectively recorded in the recording areas.

According to the fourth aspect of the present invention, the subject is placed on the rectangular top plate and the X-ray source irradiates the subject. The film moving means moves the film for recording the X-ray image along the lateral direction of the rectangular top plate, and the holding moving means integrally moves the X-ray source and the film moving means along the longitudinal direction of the top plate. To do. The control means controls the movements of the holding and moving means and the film moving means so that the X-ray images corresponding to a plurality of portions of the subject are recorded in different recording areas of the film.

Further, the invention according to claim 5 is characterized in that the recording areas are adjacent to each other with a line parallel to the longitudinal direction as a boundary.

According to the invention of claim 5, the recording areas are adjacent to each other with a line parallel to the longitudinal direction of the top plate as a boundary.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external side view of an X-ray fluoroscopic imaging apparatus according to the present embodiment, in which 1 is a rectangular top plate on which a subject is placed, 1a is a bed, 2 is an X-ray tube, and 3 is a spot imaging apparatus (flash photography). Apparatus) 4 is an image intensifier (X-ray fluorescence intensifier apparatus) that enables fluoroscopy.
The X-ray tube 2, the spot photographing device 3, and the image intensifier 4 are collectively referred to as a video system. In addition, the X-ray fluoroscopic imaging apparatus has a tilting motion in the direction of arrow A, a vertical movement of the spot of the spot imaging device 3 in the direction of arrow B (longitudinal direction of the top plate), and a top plate up and down in the direction of arrow C (longitudinal direction of the top plate). Movement, arrow D
Each movement of the left and right movement of the top in the direction (short side of the top) is possible.

FIG. 2 is a detailed view of the spot photographing device 3 (viewed from the foot side in FIG. 1), 5 is a film supply magazine, 6 is a photographed film accommodating magazine, 7 is a film transport section, and 8 is It is a contact plate (film holder).
Then, at the time of photographing, the contact plate 8 loaded with the film is moved to the photographing position by the movement operation in the direction of arrow E (short direction of the top plate) at the timing when the X-ray photographing switch 10 (see FIG. 3) is turned on. .

FIG. 3 is a block diagram of the control system. 9 on the left side of the drawing is a bed operation panel, 9a is a film set switch, 10 is an X-ray photographing switch, 11 is a bed control CPU,
12 is a CPU for controlling the spot photographing device (spot control CP)
U), 13 are vertical movement driving motors for spot photographing devices (spot vertical movement driving motors), 14 are vertical position detection encoders for spot photographing devices (spot vertical position detection encoders), 15 are contact plate driving motors, 16 are contact plate position detections. It is an encoder.

FIG. 4 shows a step operation of the bed 1a, the X-ray tube 2, the spot photographing device 3 and the contact plate 8 (first step,
2nd step and 3rd step), and FIG. 5 is an example of a film diagnostic image obtained by this operation.

Next, the operation will be described. (1) Shooting Preparation Stage To start the diagnosis, first, the film is loaded from the film supply magazine 5 to the contact plate 8 (see FIG. 2). This film loading operation is performed by turning on the film set switch 9a on the bed operation panel 9 (left center portion in FIG. 3).
It is realized by controlling the film transport unit 7 (see FIG. 2) by the bed control CPU 11 and the spot control CPU 12. When the film is loaded on the contact plate 8 by the film transport unit 7, the spot control CPU 12 sends a film setting completion signal to the bed control CPU 11,
The X-ray imaging switch 10 on the bed operation panel 9 can be accepted.

(2) Shooting Next, the operation at the time of shooting will be described with reference to FIGS. 7 and 8. FIG. 7 is an operation flowchart of the bed control CPU, and FIG. 8 is an operation flowchart of the spot control CPU.

The operations of FIGS. 7 and 8 apparently proceed simultaneously via the communication between the CPUs, the operation of FIG. 7 is shown in steps S1 to S14, and the operation of FIG. This is shown in step S32.

Further, in FIGS. 7 and 8, the "Main routine" is an X operation such as a tilting motion, a tube back-and-forth motion, and an oblique motion.
It refers to the normal operation of the radiographic apparatus.

First Shooting As shown in FIGS. 7 and 8, in order to start shooting,
When the X-ray imaging switch 10 is turned on (step S
1), when the photo counter RCONT is checked, the first
Since it is the second shooting, RCONT = 0 (step S
2; NO), an imaging ready signal is sent from the bed control CPU 11 to the spot control CPU 12 and the X-ray controller 21 (step S3). When the X-ray controller 21 receives the imaging ready signal, the X-ray controller 21 performs a setup operation so that X-rays can be emitted at any time.

On the other hand, when the spot control CPU 12 receives the photographing ready signal from the bed control CPU 11 (step S21), since the photographing counter RCONT = 0 (step S22; YES), the contact plate 8 is moved to the first photographing position (FIG. 2). Drive signal to the I / O 22 to drive the contact plate drive motor 15 via the motor driver 23 to move the contact plate 8 to the first photographing position (step S23). Whether or not the contact plate 8 has reached the photographing position can be obtained by the spot control CPU 12 counting the pulses generated by the contact plate position detection encoder 16 directly connected to the contact plate drive motor 15. In this case, the shooting position is previously stored as data in the spot control CPU 1
2 is stored in the memory or the like.

The spot control CPU 12 compares the photographing position data with the pulse count and determines that the contact plate 8 has reached the photographing position when the count value becomes equal to the photographing position data (step S24; YE).
S), and sends a positioning OK signal to the bed control CPU 11 (step S25, step S4 and step S).
5).

The bed control CPU 11 directly sends the positioning OK signal to the X-ray controller 21 as a radiographing OK signal (step S6), and the X-ray controller 21 receives the radiographing OK signal and sets up the X-ray exposure. Is completed (step S7; YES), X-ray irradiation is performed and the first imaging is completed (position of the first step in FIG. 4), and at this time, the imaging counter RCONT is incremented by “+1” ( Step S
8).

During the X-ray exposure, the X-ray controller 21 sends an X-ray ON signal (imaging ON signal) to the bed control CPU 11. This shooting-on signal serves as a trigger signal for the second shooting.

In the bed control CPU 11, the step S7 is executed.
At the time, the change from the effective level of the X-ray ON signal to the invalid level is monitored (see FIG. 6), and when the level changes, I
A drive signal for the spot vertical movement drive motor 13 is sent to the / O 24, and the spot vertical movement drive motor 13 is driven via the driver 25 to drive the X-ray tube 2, the spot photographing device 3, the image intensifier 4 in FIG. The image system consisting of is moved to the position of the second step shown in FIG. 4 (this operation is referred to as the spot vertical movement operation).

Second-time imaging In the couch control CPU 11, since the imaging counter RCONT = 1 in step S2, the second imaging ready signal is sent to the spot control CPU 12 and the X-ray controller 21 at the same time as the drive signal is sent (step). S3). The X-ray controller 21 starts the X-ray exposure setup operation again. The spot control CPU 12 generates a drive signal to move the contact plate 8 to the position of the second step (see FIG. 4), drives the contact plate drive motor 15 as described above, and stores the data in advance in the second step. When the movement to the position is completed (steps S26 and S27), the positioning OK signal (positioning completion signal) is sent again to the bed control CPU 11 (step S24).

In the bed control CPU 11, the photographing counter RC
Since ONT = 1 (step S9), the above-mentioned image system is moved to the first movement position (step S10), and the spot vertical movement drive motor 13 determines whether the image system has moved to the second step. The pulses generated by the directly connected spot vertical position detection encoder 14 are counted and compared with the position data of the second step stored in advance in the memory or the like, and when they are equal, it is determined that the movement is completed (step S11). ).

When the image system has moved, spot control CP
If the positioning OK signal sent by U12 is valid, the imaging OK signal is sent again to the X-ray controller 21, and the X-ray controller 21 performs the second X-ray exposure if the setup is completed. This completes the second shooting.

Third Shooting The third shooting is similarly performed. In this case, steps S12 and S13 are followed in FIG. 7, and steps S28 and S29 are followed in FIG.

(3) Film Storage Next, when the bed control CPU 11 recognizes that the third photographing has been completed by the change from the effective level to the invalid level of the X-ray ON signal (step S7 in FIG. 7), the spot is detected. A film accommodation signal is sent to the control CPU 12 (step S2; YES, step S14).

The spot control CPU 12 is a bed control CP
When the film accommodating signal sent from U11 becomes valid (step S30), the contact plate 8 is moved to the film delivery position (see FIG. 2), and the film transport unit 7 is moved.
The film is accommodated in the film accommodating magazine 6 by using (step S31, step S32). This completes a series of shooting operations.

As described above, according to this embodiment, not only the setup time before diagnosis can be greatly shortened, but also
Even at the time of diagnosis, there is a great merit that the patient can be positioned quickly by performing fluoroscopy.

This is because, in the prior art, a film changer or the like was used when taking a picture, so that it was not possible to see through the photographed part.

Furthermore, if it becomes possible to see through the imaged region, it will be visible on the TV monitor when the imaging agent injection catheter is inserted into the patient's body, and the safety of the diagnostic procedure will be improved.

Further, regarding the safety to the patient, even in the conventional technique, the top plate 1 on which the patient rides is moved stepwise even during photographing, so that the patient in which a catheter or the like is inserted is moved, which is a great risk. Was accompanied by.
However, according to the present embodiment, since the image system (spot vertical movement) and the contact plate moving operation are combined, it is not necessary to move the patient, and thus the safety of the patient is secured.

As described above, according to the present invention, compared with the prior art,
The pre-diagnosis setup time can be shortened, positioning of the patient at the time of diagnosis, swiftness and safety of catheter insertion, safety at the time of imaging, etc. can be performed, and the diagnostic throughput is greatly improved.

[0045]

As described above, according to the invention described in each claim, it is not necessary to prepare (combine) the ceiling-holding X-ray tube and the film changer as in the conventional case, and the catheter can be inserted. For example, angiography of the lower limbs (lower limb angio) can be performed without moving the patient, and the danger to the patient can be eliminated.

Further, according to the present invention, 1
It is possible to record continuous X-ray images of a plurality of portions on a sheet of film.

[Brief description of drawings]

FIG. 1 is a side view of an example embodiment of the present invention.

FIG. 2 is an enlarged view of a main part of the embodiment.

FIG. 3 is a block diagram of a control system of the embodiment example.

FIG. 4 is an enlarged operation diagram of a main part of the embodiment.

FIG. 5 is a diagram showing blood vessels photographed according to the embodiment.

FIG. 6 is a diagram showing a change in a signal of a main part in the example of the embodiment.

FIG. 7 is an operation flowchart of the bed control CPU of the embodiment example.

FIG. 8 is an operation flowchart of the spot control CPU according to the embodiment.

FIG. 9 is a diagram showing a conventional X-ray fluoroscopic imaging apparatus and a ceiling-supported X-ray fluoroscopic imaging apparatus.

FIG. 10 is a system diagram in the case of performing a lower limb blood vessel angiography (lower limb angio) by combining a conventional X-ray fluoroscopic apparatus and a ceiling-supported X-ray fluoroscopic apparatus.

[Explanation of symbols]

 1 Top Plate 1a Bed 2 X-ray tube (X-ray source) 3 Spot imaging device 4 Image intensifier 5 Film supply magazine 6 Film storage magazine 7 Film transport unit 8 Contact plate (film) 11 Bed control CPU (moving means) 12 Spot control CPU (moving means)

Claims (5)

[Claims] 1. A top plate on which a subject is placed, an X-ray source that sequentially irradiates a plurality of regions of the subject with X-rays, a film that records an X-ray image transmitted through the subject, and the plurality of regions. The X-ray source and the moving means for moving the relative position of the film so that the respective X-ray images corresponding to are recorded in different recording areas of the film respectively. Fluorographer. 2. The X-ray source changes a portion to be exposed to X-rays by moving with respect to the subject,
2. The X-ray fluoroscopic imaging apparatus according to claim 1, wherein the film and the film moving means are provided in a spot imaging apparatus that moves integrally with the movement of the X-ray source. 3. The X-ray diagnostic apparatus, wherein the film moving means moves the film in the spot imaging apparatus in synchronization with the movement of the X-ray exposure site. 4. A rectangular top plate on which a subject is placed, an X-ray source that irradiates the subject with X-rays, a film moving means that moves a film along a lateral direction of the top plate, Holding and moving means for integrally moving the X-ray source and the film moving means along the longitudinal direction of the top plate, and X-ray images corresponding to the plurality of portions are recorded in different recording areas of the film, respectively. An X-ray diagnostic apparatus further comprising: a holding and moving means and a control means for controlling the movement of the film moving means. 5. The X-ray diagnostic apparatus according to claim 4, wherein the recording areas are adjacent to each other with a line parallel to the longitudinal direction as a boundary.