JPH09152670A - Cassetteless x-ray radiographing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To relieve the inflection of a film conveyance path between a film carriage and a magazine, to prevent the device from increasing in width, to facilitate the loading of the magazine, and to eliminate restrictions of the form and function of the whole device at the same time. SOLUTION: The main body case 14 of this cassetteless X-Ray radiographing device has a loading position SA for a film magazine and a waiting position SB for a film carriage extended horizontally to the front side part and formed in an L shape in plane view wherein a photography position SC is successive on the inner side of the wait position SB; and the carriage is enabled to move reciprocally between the stand position SB and photography position SC and the film magazine can be inserted from the main body case front 14a and loaded.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cassette-less X-ray fluoroscopic imaging apparatus provided with a cassette-less rapid shooting apparatus capable of cassette-radio shooting, and more particularly, to alleviate bending of a film transport path and prevent increase in apparatus width. The present invention also relates to a technique for alleviating restrictions on the form and function of the entire apparatus due to the ease of loading a film magazine and the placement of the loading position of the film magazine and the inserting direction of the magazine.

[0002]

2. Description of the Related Art A cassette-less X-ray fluoroscopy apparatus includes a top plate on which a subject is placed, an X-ray tube and an image intensifier which are arranged at opposite positions with the top plate interposed therebetween, and a cassette-speed quick-shooting device. Equipped with. The X-ray tube irradiates the subject placed on the top plate with X-rays, and an X-ray fluoroscopic image is obtained based on the detection signal output from the image intensifier accompanying the X-ray irradiation. At the same time, a film of the transmission X-ray image is taken by the cassette-telegraphing device, which is used for the diagnosis of the doctor.

The cassette-less system is provided with a film carriage arranged so as to be capable of reciprocating between a photographing position and a standby position in a main body case of the cassette-less quick photographing device, and a film magazine for supplying / storing a film. The film carriage moves to the shooting position by sandwiching the unphotographed film supplied from the film magazine between the intensifying screens at the standby position, returns to the standby position after capturing the transmission X-ray image, and then moves to the magazine. This is a system in which the film that has been filmed is stored every time the film is filmed, and film filming can be continued without replacing the magazine as long as the film that has not been filmed remains in the magazine.

In the case of the conventional cassette-telephoto shooting device shown in FIG. 8 (a), in the main body case J2 of the cassette-telephoto shooting device under the top plate J1, there is a diagram between the standby position J3 and the shooting position J4. As shown in FIG. 8 (b), the film carriage J5 is arranged so as to be able to reciprocate in the direction parallel to the longitudinal direction of the top plate J1, while the non-photographing is performed at the loading position J6 directly below the film carriage J5. A supply magazine J7 containing a large number of films and a storage magazine J8 for storing photographed films are provided, and a film transport mechanism including rollers and guide members supplies and stores the film with the film carriage J5. Is performed.

Further, in the case of another conventional cassette telegraphing apparatus shown in FIG. 9, only the photographing position J4 of the body case J2 of the cassettetelegraphing apparatus is disposed below the top plate J1. Other portions of the main body case J2, such as the standby position J3, project to the rear side of the top plate J1 and the top plate J1.
Is arranged so as to extend along the longitudinal direction of the. Of course, the film carriage J5 is arranged so as to be capable of reciprocating between the standby position J3 and the photographing position J4. The supply magazine J7 and the storage magazine J8 are provided at the loading position J6 that is adjacent to the standby position J3 along the longitudinal direction of the top plate J1.
Is provided, and a film transport mechanism including a roller and a guide member is configured to supply and store a film with the film carriage J5. The magazine J7 and the storage magazine J8 are, as shown in FIG.
The top plate J1 is inserted and loaded into the side surface J2a of the main body case J2 from the direction parallel to the longitudinal direction on the rear side.

[0006]

However, in the case of the above-mentioned conventional cassette-telegraphing apparatus, there are the following problems, respectively. In the case of the cassette-telegraphing apparatus shown in FIG. 8, the film transport mechanism is complicated because the film must be transported between the film carriage J5 and the supply magazine J7 and the storage magazine J8 located immediately below the film carriage J5. Besides, there is a problem that the film is not conveyed straight due to abrupt bending of the conveying path, and there is a problem that a defective conveyance such as a scratch or an electrostatic mark is likely to occur on the film.

In the case of the cassette-telephoto shooting device of FIG. 9, since it is arranged so as to project to the rear side of the top plate J2, there is the problem that the device width increases, and in addition the film magazines J7 and J8 are loaded. There is a problem of difficulty. As the width of the equipment increases, the floor area required for installing the equipment increases. The reason why it is difficult to load the magazines J7 and J8 is that the magazines J7 and J8 must be taken in and out by turning around to the rear side of the top plate J1. Further, in the case of the cassette-telegraphing device shown in FIG. 9, there is a problem that the device form and the function are limited due to the arrangement of the loading positions of the magazines J7 and J8 and the inserting direction of the magazines. That is, since the loading position J6 extends along the longitudinal direction of the top plate J1 next to the standby position J3 and the insertion direction of the magazines J7 and J8 is the side surface J2a of the main body case J2, the top plate J1 is erected. In this case, the side surfaces J2a of the magazines J7 and J8 of the main body case J2 face the floor at a short distance. as a result,
Magazines J7, J8, which have a relatively long length, may not be inserted or withdrawn, so magazines J7, J8
By preventing the side surface J2a of J8 from coming too close to the floor, the form of the device is limited, and the movement of the X-ray tube and the quick-copy device cannot be increased, and the movement function cannot be fully utilized.

In view of the above circumstances, the present invention alleviates the bending of the film transport path between the film carriage and the magazine, prevents the width of the apparatus from increasing, and facilitates loading of the film magazine, and moreover, the magazine. It is an object of the present invention to provide a cassette-less X-ray fluoroscopic imaging apparatus equipped with a cassette-less rapid shooting apparatus capable of solving the limitation of the form and function of the entire apparatus caused by the arrangement of the loading position of the cartridge and the inserting direction of the magazine. To do.

[0009]

In order to achieve the above-mentioned object, the present invention has the following configuration. That is, the cassette radiography apparatus according to the present invention is capable of performing cassette radiography with a top plate on which a subject is placed, X-ray tubes and image intensifiers which are arranged at opposing positions sandwiching the top plate. In a cassette-less X-ray fluoroscopic imaging apparatus comprising a possible cassette-less rapid-photographing apparatus, the body case of the cassette-less rapid-photographing apparatus includes an X-ray transmission region through which X-rays from the X-ray tube are transmitted. It is arranged so as to extend in a transverse direction that is substantially orthogonal to the longitudinal direction of the top plate at the bottom of the top plate, and the front part of the top plate extends along the longitudinal direction of the top plate and is viewed from above. A film magazine for supplying / accommodating a film to / from a film carriage is provided in a front side portion which is arranged so as to be substantially L-shaped and extends along the longitudinal direction of the main body case. A loading position for inserting and loading from the front of the main body case is provided, and a film carriage is provided at a portion corresponding to an L-shaped corner of the main body case when the film is transported to and from the film magazine at the loading position. A film is provided with a standby position to stand by, and a shooting position is provided in the X-ray transmission region which is a direction crossing the top plate from the standby position, and the film is reciprocally movable between the standby position and the shooting position. It is equipped with a carriage.

[0010]

The operation of the cassette-telescopic X-ray fluoroscopy apparatus according to the present invention when the cassette-telescopic imaging of a transmission X-ray image is executed is as follows. First, a film magazine for supplying / storing a film is inserted and loaded between the front surface of the main body case of the cassette-less rapid shooting device and the film carriage. Of course, the film magazine contains many unrecorded films. Also, the film carriage is in the standby position. When a shooting command is issued, the film carriage receives the supply of film from the film magazine at the loading position, then moves to the shooting position to shoot a transmission X-ray image, and then moves to the standby position. The film that has been shot is conveyed and stored in the film magazine from the carriage that has returned to the standby position. If there is a shooting command continuously, the above process is repeated. Since the film is supplied and stored in a standby position which is horizontally adjacent to the loading position, the film is not excessively bent. As long as the unphotographed film remains in the film magazine, you can repeat cassette shooting without changing the film magazine. The exchange of the film magazine can be easily performed regardless of the angle of the top plate because the loading position is arranged on the front surface of the main body case.

[0011]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing a configuration of a main part of a cassette-less X-ray fluoroscopic imaging apparatus according to an embodiment. FIG. 2 is a schematic plan view of the cassette telephotographing device of the embodiment. In the cassette radios X-ray imaging apparatus of the embodiment, the tilting rotation frame 2 is rotatably supported on the lower side with respect to the base 1 as shown by the arrow A, while the subject M is placed on the side. The top-and-bottom rotation frame 2 so that the top plate 3 can move in the longitudinal direction as shown by the arrow B.
Is arranged above. It is also possible to erect the top plate 3 until the top plate 3 is substantially perpendicular to the base 1.
An X-ray tube 5 is attached to the tip of a supporting frame 4 provided upright on the rear side of the tilting rotation frame 2 so as to face the top plate 3 from above, and the top plate 3 of the tilting rotation frame 2 is attached. An image intensifier 6 is arranged on the lower side at a position facing the X-ray tube 5. The X-ray tube 5 can move in the direction indicated by the arrow C, but the image intensifier interlocks with the movement of the X-ray tube 5 so that the opposed arrangement relationship between the X-ray tube 5 and the image intensifier 6 is always maintained. 6 also moves. Further, below the top plate 3 of the tilting and rotating frame 2, a cassette telegraphing device 7 for filming a transmission X-ray image of the subject M is installed. Casetteres quick-shooting device 7
Is also configured to move in conjunction with the X-ray tube 5.

When performing fluoroscopy with the apparatus of the embodiment, the tilting and rotating frame 2 is rotated by the operation of the operating section 8 through the drive control section 9 so that the top plate 3 stands up together with other objects, and While the subject M is positioned by horizontally moving the top plate 3 on which the sample M is placed, the exposure controller 10 operates the X-ray tube 5 according to the exposure conditions set by the operation unit 8. The subject M placed on the top plate 3 is irradiated with X-rays. Image intensifier with X-ray exposure 6
The detection signal output from the TV camera 6a is converted into an electric signal by the TV camera 6a and is sent to the TV monitor 12 via the detection signal processing unit 11 that performs amplification and the like. An X-ray fluoroscopic image of the subject M is displayed on the screen of the television monitor 12. And
When it is determined that the transmission X-ray image is to be captured based on the observation result of the X-ray fluoroscopic image, etc., the quick-shooting control unit 13 operates the cassette telephotographing device 7 according to the shooting instruction from the operation unit 8 to transmit the transmission X-ray image. Execute film shooting of line image. Hereinafter, the configuration of the cassette-telegraphing device 7, which is a feature of the present invention, will be described in detail.

As shown in FIG. 2, the cassette-telegraphing apparatus 7 has a main body case 1 which is almost entirely under the top plate 3.
4, the main body case 14 is arranged so as to extend in a transverse direction substantially orthogonal to the longitudinal direction of the top plate 3 below the top plate 3 including the X-ray transmission region, and
The front side portion 14a extends along the longitudinal direction of the top plate 3 and is arranged so that the shape (planar shape) viewed from above is substantially L-shaped, and extends along the longitudinal direction of the main body case 14. There is a loading position SA on the front side portion, and a standby position SB at the portion corresponding to the corner of the L-shape of the main body case 14,
There is a photographing position SC in the X-ray transmission area which is a direction crossing the top plate 3 from the standby position SB. The loading position SA is shown in FIG.
Further, as shown in FIG. 3, a supply magazine 15 for accommodating uncaptured films for cassette cassette photographing and a storage magazine 16 for accommodating (collecting) the photographed films are being loaded. The standby position SB at the corner of the L-shape is where the film carriage 17 for cassette telegraphy stands by. Then, the photographing position SC on the far side of the standby position SB is a place where the film carriage 17 stays while photographing the transmitted X-ray image.

The supply magazine 15 and the storage magazine 16 are loaded by manually inserting them into the loading position SA of the body case 14 from the front surface of the body case (see FIG. 1) 14b. The lid slides to the right and, as shown in FIG.
The film outlet 15a and the film inlet 16a of the storage magazine 16 are opened. In this way, since both magazines 15 and 16 are configured to be inserted from the front surface (front side) 14b of the main body case, there is no need to go around to the rear side of the top plate 3, and it is easy to load the film magazines.
Since the front surface (front side) 14b of both magazines 15 and 16 does not face the floor due to the standing up of the magazines, the standing up of the top plate 3 does not hinder the loading and unloading of the film magazines, and the cassette telephoto shooting device 7 is used. The restriction of movement is removed and the movement function can be fully utilized.

As shown in FIG. 4, the film carriage 17 has wheels 18 on its sides, and a transfer path from the standby position SB to the photographing position SC by a commonly used electric drive mechanism (not shown). Is configured to be able to travel back and forth along the rail 19. To the film carriage 17 at the standby position SB, as shown in FIG.
The more unphotographed film F is pulled out by the suction cup 20 and is fed by the feed roller 21 along the transport path 22 into the film carriage 17 from the loading / unloading hole 23 to be set. On the contrary, the photographed film F in the film carriage 17 which has been photographed and returned to the standby position SB is fed out from the loading / unloading hole 23 and fed into the storage magazine 16 along the feeding path 24 by the feeding roller 25. Will be collected.

Supply magazine 15 and storage magazine 16
Since the film carriage 17 and the film carriage 17 are arranged side by side in a substantially horizontal direction instead of vertically, the conveyance paths 22 and 24 between the magazines 15 and 16 and the carriage 17 are short and have a small degree of bending. . Also, both magazines 1
Also in the installation state in which the parts 5 and 16 are inclined to the left with respect to the horizontal, the conveyance paths 22 and 24 are shortened, and
Contributes to the relaxation of bending of the transport path.

Next, a cassette X-ray imaging operation of a transmission X-ray image by the embodiment apparatus having the above-described configuration will be described with reference to the operation explanatory diagrams of FIGS. 5 and 6 and the flowchart of FIG. [Step S1] As shown in FIG. 5A, the supply magazine 15 containing a large number of unphotographed film FAs and the empty storage magazine 16 are provided in advance on the case front surface 1 of the main body case 14.
Insert from 4b and load at the loading position SA.

[Step S2] As shown in FIG. 5B, the film FA is conveyed from the supply magazine 15 into the film carriage 17 and set therein.

[Step S3] As shown in FIG. 5C, the film carriage 1 on which the film FA is set.
7 exits from the standby position SB and moves to the shooting position SC.

[Step S4] Subsequently, a transmitted X-ray image of the subject M is imaged on the film FA of the film carriage 17 located at the photographing position SC by being irradiated with X-rays from the X-ray tube 5.

[Step S5] As shown in FIG. 6A, immediately after the film photographing is finished, the film carriage 1
7 returns from the photographing position SC to the standby position SB.

[Step S6] As shown in FIG. 6B, the filmed film FA is stored in the storage magazine 16 at the loading position SA from the film carriage 17.

[Step S7] If there is a command for cassette radiography, then the steps S1 to S are executed.
6 is repeated. If the instruction for cassette shooting is not issued, the process proceeds to the next step.

[Step S8] If necessary, FIG.
As shown in (c), the storage magazine 16 is pulled out, the film FA is sent to development, and cassette shooting is completed.

The present invention is not limited to the above embodiment, but can be modified as follows, for example. (1) In the above embodiment, the supply magazine 15 and the storage magazine 16 are loaded in the loading position SA in a state of being slightly inclined with respect to the horizontal, but the supply magazine 15 and the storage magazine 16 are loaded in the horizontal state. The configuration to be performed is also mentioned as another embodiment.

(2) In the above embodiment, the supply magazine 15
Although the film is taken out from the suction cup 20 by the suction cup 20, a film taking-out mechanism utilizing the frictional action of the rollers may be used instead of the film taking-out mechanism using the suction cup.

(3) In the above embodiment, the supply magazine 15
Although the storage magazine 16 and the storage magazine 16 are separate members, another embodiment is one in which the supply magazine 15 and the storage magazine 16 are integrated.

(4) It goes without saying that the apparatus of the present invention can be applied to an X-ray fluoroscopic apparatus equipped with a digital image processing system.

[0029]

According to the cassette radiography apparatus of the present invention, since the film magazine and the film carriage of the cassette radiography apparatus are arranged substantially horizontally adjacent to each other, the film between the film carriage and the magazine is arranged. The bending of the transport path is eased, the film transport mechanism is not complicated, and defective transport of the film is eliminated, and most of the main body case of the cassette-telegraphy rapid transfer device is located under the top plate. It is possible to prevent the width from increasing,
Can be installed with a small floor area. In addition, according to the device of the present invention, since the film magazine is loaded from the front of the main body case of the cassette-telegraphy quick-shooting device, the film magazine can be easily loaded, and the top plate stands up and out of the film magazine. Therefore, the limitation of the form and function of the entire apparatus due to the arrangement of the loading position of the film magazine and the inserting direction of the magazine is eliminated.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a main configuration of a cassette-less X-ray fluoroscopic imaging apparatus according to an embodiment.

FIG. 2 is a schematic plan view of a quick-shooting device.

FIG. 3 is a schematic diagram showing a film transport state between a film carriage and a magazine.

FIG. 4 is a partial plan view showing the movement of the film carriage.

FIG. 5 is a schematic diagram for explaining the movement of the film carriage in the first half of cassette shooting.

FIG. 6 is a schematic diagram for explaining the movement of the film carriage in the latter half of the cassette shooting.

FIG. 7 is a flowchart showing a flow of operations at the time of cassette radiography.

FIG. 8 is a schematic diagram showing a configuration example of a main part of a conventional quick-shooting photographing device.

FIG. 9 is a schematic diagram showing another example of the configuration of a main part of a conventional quick-shooting and photographing apparatus.

FIG. 10 is a perspective view showing a partial external appearance of the conventional quick shooting apparatus of FIG.

[Explanation of symbols]

 3 ... Top plate 5 ... X-ray tube 6 ... Image intensifier 7 ... Cassette telephotographer 14 ... Main body case 14a ... Main body case front 15 ... Supply magazine 16 ... Storage magazine 17 ... Film carriage F ... Film SA ... Loading position SB: Standby position SC: Shooting position

Claims (1)

[Claims] 1. A top plate on which a subject is placed, an X-ray tube and an image intensifier which are arranged at opposing positions sandwiching the top plate, and a cassette-telegraphy quick-imaging device capable of cassette radiography. In the cassette radios X-ray radiography apparatus, the main body case of the cassette radiography radiography apparatus is provided with a longitudinal direction of the top plate at a lower portion of the top plate including an X-ray transmission area through which X-rays from the X-ray tube are transmitted. It is arranged so as to extend in a transverse direction that is substantially orthogonal to the direction, and its front part extends along the longitudinal direction of the top plate so that the shape seen from above is almost L-shaped. A film magazine for supplying / storing a film to / from a film carriage is inserted into the front side portion of the main body case extending in the longitudinal direction from the front of the main body case and loaded. A filling position is provided, and a waiting position for the film carriage to wait when the film is conveyed to and from the film magazine at the loading position is provided at a portion corresponding to an L-shaped corner of the main body case. A photographing position is provided in the X-ray transmissive region which is a direction traversing the top plate from the above, and a film carriage capable of reciprocating between the standby position and the photographing position is provided. Casetteres X-ray fluoroscope.