JPS5936242A - X-ray diagnosing device - Google Patents

Abstract

PURPOSE:To perform continuously X-ray photography in quantities, by clamping and conveying a storage type fluorescent material plate between two conveyor belts extended endlessly and irradiating it with X-rays. CONSTITUTION:The 1st and the 2nd conveyor belts 19 and 20 which clamp and convey the storage type fluorescent material plate (DIP) 25 are provided endlessly and driven by driving drums 21a-21f, and 22a-22e for rotation. A body to be detected is mounted on a ceiling plate 12 irradiated with X rays from an X- ray tube 14, and an X-ray fluoscopic image formed on an image intensifier 15 is displayed on a television monitor. Then, the unexposed DIP25 in a DIP supply part 16 is clamped between the belts 19 and 20, moved to under the X-ray tube 14, and conveyed successively after X-ray photography to be stored in a storage part 17. Thus, the X-ray photography is performed continuously in quantities.

Description

[Detailed description of the invention] [Technical field of invention] The present invention belongs to the field of silent medical devices.

More specifically, the present invention relates to an X-ray diagnostic apparatus that performs continuous VcX imaging in large quantities using a storage phosphor plate as a new XIM imaging system that replaces the conventional intensifying screen-film system.

[Background technology of the invention]

Conventional xH imaging uses Xi film, placing intensifying screens on the front and back sides of the X-ray film, storing it in an X-ray cassette to hold the X-ray film closely, and inserting and removing the cassette from the imaging position VC. It's being done a lot. Further, a VcXIB film is placed between the intensifying screens, and this film is held between belts to closely hold X films, the belt is driven, and new X1fB films are sequentially supplied. A cassette-less method is also used to process a large amount of X-ray images. The former is often used in general imaging systems, such as general-purpose buttsky imaging stands, chest stands, and close-up XF11 TV beds. In addition, the latter has been developed through the use of X-rice TV beds (often remote type), which are mainly used for the gastrointestinal tract, which is required to process a large number of images.

On the other hand, new X-ray imaging methods have been proposed to replace the conventional intensifying screen-film system. This f'L is a method of digital radiography in a broad sense, and for example, Fuji Film Co., Ltd.'s Diagnostic X-ray SyJ? tem
There is an example published as (), which uses a stimulable phosphor plate as an X-ray detector instead of an intensifying screen-film system.
After X&1 imaging, information is extracted from the stimulable phosphor plate, processed, and displayed on a CRT or photographed on recording film for diagnosis. In X-ray photography using this stimulable phosphor plate, a conventional intensifying screen is not required, and therefore an intensifying screen, which was indispensable for the intensifying screen-film system, is not required. It has the advantage that there is no need to consider adhesion to the X-ray film. In addition, this stimulable phosphor plate is
After Xi photography, readout irradiation for KM exhaustion is performed and recorded.
’ After reading out the X-ray image, repeat the process 1 again.
It has the property of being able to be recycled and used approximately 000 times. Furthermore, this stimulable phosphor plate has the characteristic that it can be exposed to the source before taking X-rays, so-called day light.
ottding is possible.

[Problems with background technology]

As a means for automatically conveying the stimulable phosphor plate, it is not impossible to apply a conventional intensifying screen-film type conveying means.

However, in the conventional intensifying screen-film conveying means, the bXH TL is a stimulant that damages the surface of the phosphor plate. Accumulative phosphor plate scratches are 1ii
II image reading and 9 o'clock (laser beam scanning method '4) tic b Danger of misdiagnosis in XM diagnosis as it is read as a signal that is not the original information 7! /X exists. It also causes shortening of the lifespan of the stimulable phosphor plate.

Here, an example of a conventional X-ray film photographing apparatus will be explained with reference to FIG. In FIG. 1, the X-ray film imaging device converts X-rays irradiated by an X-ray tube 1 and transmitted through a subject 2 into electrical signals via an image intensifier (hereinafter abbreviated as 1-1) 3. This is converted and displayed on a display (not shown) as an xH transmission image. And sXH
In the case of X1 film, unexposed X-ray films 11 stored in the X-ray film supply section 4 are taken out one by one and conveyed to the front of said 1-15, and after X'-ray imaging, The X-ray film is stored in an X-ray film storage section 5 disposed opposite to the X-ray film supply section 4. X&! Film Supply As means for conveying the Xi film 11 to the 4Xa X-ray film unit 5, a pair of drive drums 6α, 6b are provided in the X-ray film storage unit 5, and the drive drums 6α, 6h are reversibly rotatable. It becomes. Further, driven drums 7α and 7Δ are provided in the X-ray film supply section 4, and a biasing force is constantly applied to the driven drums 7, 7A, and 7A in the direction of arrow A shown in the figure. two interlocking conveyor belts 8α that sandwich and convey the X-ray film 11;
8A has one end fixed on the outer periphery of the drive drum 6α, 6b, and the other end of each n is fixed on the outer periphery of the driven drum 7α.
.

They are wound and fixed on the outer periphery of 7b in opposite directions.

Furthermore, intensifying screens 9α and 9b are adhesively fixed to the outer surfaces of conveyor belts 8a and 8h wound around the outer peripheries of driven drums 7g and 7A. Therefore, the drive drums 6α, 6
As the X-ray film 11 is rotated in the direction of arrow B shown in FIG.
It is designed to be transported by holding 8hvc. l1II
After XH film photography is performed by stopping the Xi film 11 in front of the XLFM film 11, the driving drum rows a and 6b are further rotated in the direction of arrow B in the figure, and the XLFM film 11 is
is stored in the X-ray film storage section 5. Thereafter, when the driving drums 6α, 6b are stopped to rotate and become unrestrained, the intensifying screens 9α, 9b are set to their initial positions by the biasing force acting on the driven drums 7α, 7AK in the direction of arrow A in the figure. can be prepared for X-ray photography. Reference numeral 10 denotes a pressure roller and a conveyor belt 8α disposed on both sides of the X-ray imaging position.

The trap is designed to press 8h. This pressure roller 10
Accordingly, the adhesion between the X-ray film 11 and the intensifying screens 9α and 9A can be maintained.

In the film-intensifying screen system, XM diagnostic devices place importance on the adhesion between the X, lil film and the intensifying screen, so many of them have a structure in which the conveyance distance is shortened and the adhesion mechanism is simplified.For example, the above example Conveyor belt 8α as shown.

An 8k reciprocating device was adopted, which required a lot of burden in terms of maintenance and service, including the management of the contact mechanism.
Moreover, there was a limit to the simplification of the configuration.

A conveyance means using an endless belt, which has a simpler structure than the above-mentioned mechanism, has also been proposed (Japanese Utility Model Publication No. 56-3708).

However, this technique uses adhesive tape, adhesive robes, etc.
This is a device for conveying X-ray film, but it has the disadvantage that sticky substances adhere to the x-ray film during use, and dust etc. adhere to this, resulting in contamination of the rollers of the automatic developing device and the X-ray film. Ta. Therefore, conventionally,
When using a stimulable phosphor plate for X-ray photography, it is possible to fully demonstrate the function of the stimulable phosphor plate, and it is easy to configure.
H diagnostic equipment was not provided.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and uses a stimulable phosphor plate for X-ray imaging, and provides a simple conveying means that can fully utilize the functions of this stimulable phosphor plate. It is therefore an object of the present invention to provide an xB diagnostic apparatus that can perform X-ray imaging in large quantities and continuously.

[Summary of the invention]

The outline of the present invention for achieving the above object is that an XMA tube and an image intensifier are arranged opposite to each other with a top plate on which a subject is placed, and an endless first and second conveyor belt is conveyed. In an X-ray diagnostic apparatus, the first conveyor belt is provided as a means for carrying out X-ray photography by sandwiching a stimulable phosphor plate between the first and second conveyor belts and guiding the plate to a photographing position. The range including the photographing position is arranged parallel to the top plate.

The second conveyor belt is arranged such that it circumscribes at least a portion of the first conveyor belt that is disposed parallel to the top plate, and the other portion has a separation area apart from the first conveyor belt. A stimulable phosphor plate supply section and a stimulable phosphor plate storage section are provided in the separation area, and the front HC first .
The present invention is characterized in that at least one of the second conveyor belts is provided with protrusions protruding from opposing surfaces at both end portions of the belt in the width direction.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a cross-sectional view of an X-ray diagnostic apparatus which is an embodiment of the present invention. In the following explanation, the stimulable phosphor plate is referred to as D-
It is abbreviated as 1-P. In FIG. 2, the X-ray diagnostic apparatus includes a top plate 12 on which a subject is placed, a pedestal 16 that holds the top plate 12, an Xi tube 14 attached above the top plate 12, and a top plate 12. 1, 115 housed in the pedestal 13 so as to be placed opposite the X-ray tube 14 with the plate 12 in between;
D-1-P supply section 16゜D・I installed in the frame 13
@P storage section 17 and D, I@p supply section upper 6I/11
5 front side, D-1- at D-1@P storage part 17i
D-1-P conveying means 18 for conveying P. The top plate 12 is made of a transparent material such as acrylic, and the bottom of the top plate 12, that is, the pedestal 13 can be seen through. The pedestal 16 has an X-ray grid 13α above the l-115, and the D-1, p supply section 1
A portion along the yarn path for conveying the P25 (6) on the front surface of the l-115 and facing the top plate 12 is formed of a transparent member 13Avc such as barge acrylic.

All other parts of the pedestal 13 are made of members having X-ray shielding and light shielding abilities. The conveying means 18 is D-1
- A first conveyor belt 19 and a second conveyor belt 20 that are joined to each other so as to sandwich and convey P25; The second conveyor belts 19 and 20 are synchronized and intermittently rotated in one direction (in the direction of the arrow in the figure) [driving drums 21α to 21f,
It is composed of 22α to 221. The first conveyor belt 19 is stretched parallel to the top plate 12, including the front surface of the belt 1, 115, for example, in a track shape.

Further, the second conveyor belt 20 is stretched in an endless manner so as to circumscribe, for example, a portion other than one arc-shaped portion of the track-shaped first conveyor belt 19. For this reason,
1st. Along the part where the second conveyor belt 1920 joins, the first conveyor belt 1920 is located before and after the driving direction of the belt. Separation portions 25.24 of the second conveyor belt) 19.20 are formed. Above, 1. The p supply section 16 is provided near the separation section 26, and a large number of unphotographed D-1-P25 internal traps are provided.
is stored. The D@I-P supply section 16 has a spring 16α at the bottom, and the biasing force of the tin ring 16α pushes up the 0-1-P25, and the
From the ΦI/P outlet 166, one by one D-1-P
It is designed to supply Incidentally, since the supply drive of D-1-P25 is known, the explanation thereof will be omitted.

A plurality of guide rollers 26 are provided along the separating section 23 from the D-1-P outlet 16b. As mentioned above, the J, p storage section 17 is provided near the other separating section 24, and the first. 2nd conveyor bell) i 9
e 2 D-I・P25 after photographing transported from OK
It is designed to store J@ next. I) -1-P storage section 17 is D for sequentially storing 1)-1-P 25.
-1-P storage slot 17α, and the D-1-P storage opening 17
α is equipped with a shielding lid 17A. This shielding lid 17A is automatically closed when the D-1-P storage section 117 is removed from the pedestal 13 to prevent the photographed D-1 and P25 from being exposed. A plurality of guide rollers 27 are provided along the separating section 24 from the D/I-P storage slot 17α. 28α to 281 are each gX
This is a shielding plate having radiation shielding and light shielding ability, and is used to protect the I-P25 from xH radiation and light exposure after the p1 imaging is completed.

Next, the first. The shape etc. of the second conveyor belt 19, 20 will be explained with reference also to FIGS. 6(α) and (A) fc. Figure 3 (α) is the first one. Second conveyor belt 19
6(h) is a schematic perspective view of the second conveyor belt 20. FIG. As shown in FIG. 6(α)s(')Vc, while the first conveyor belt 19 is flat, the second
The conveyor belt 20 has protrusions 20α protruding from the surface facing the first conveyor belt 19 at both ends in the width direction.
20b. Therefore, when Kl) and I-P25 are sandwiched between the first and second conveyor belts 19 and 20, a space 2DC is formed between the second conveyor belt 20 and D-1-P25. has been done. As mentioned above, the I/P 25 consists of a holding body 25α and a stimulable phosphor layer 25A coated on, for example, one side of the holding body 25α. Also, the above-mentioned No. 1. The second conveyor bell) 19.20 is an Xa-permeable material such as rubber, synthetic material such as nylon, vinyl, cloth 9
Paper products, etc. are also formed. In addition, the second conveyor belt 20 employs a transparent member among the above-mentioned members.

The operation of the X-ray diagnostic apparatus configured as above will be explained. Place the subject (not shown) on the top plate 12 and
Ray tube 14, low dose Xlf! When A is irradiated, the X-rays that have passed through the object are sent to the Xi dagrid 16α 1st. l-115Vc is incident through the second conveyor bell) 19.20. I.115 outputs an electrical signal corresponding to the intensity of the visible light X-ray image formed. This can then be converted into a television signal and a KX-ray fluoroscopic image can be displayed on a television monitor (not shown). The operator then performs X-ray imaging at a desired timing while watching the television monitor. During X-ray photography, the D"lφP supply supply section 6
The internally stored D-1-P25 which has not yet been photographed is supplied and driven from the D-1-P supply rotor 16α in synchronization with the intermittent driving of the drive drums 21α to 21f and 22α to 22g.
It is guided by the guide roller 26 and guided to the separating section 26 (
Point A in the diagram: Ready position). Then, with the next intermittent drive of the drive drums 21α to 21f and 22α to 224, the D@I-P 25 at point A in the figure changes to the first. 5 tarbd at point B shown in the diagram
-Stop at position Ay. When the operator operates the shooting start switch (not shown) at a desired timing with the D@I-P 25 at the 5-tand-by position of point B in the diagram, the drive drums 21α to 21f and 22α to 226 are driven for a predetermined period of time. do. For this reason, the 19th and 20th conveyor bells) 19
．． I)-I-P25 sandwiched between the first.
Moving together with the second conveyor belt 19.20, D-1-
P25 can be transported to the front of l-115 (photographing position C). The arrival of the D-1-P25 at the photographing position C is detected by, for example, a micro switch, and the drive drums 21α to 21f are activated.

The driving of 22a to 22- is stopped. And after that,
If the Xi tube 14 is irradiated with xH, D-
X-ray photography can be performed on 1-P25. Also, Rtαdy position A point and 5ta are transferred via the guide roller 26.
D-1 to P25 are sequentially supplied to the nd-by position point. Therefore, X-recess photography can be performed continuously. Further, the second conveyor belt 20 has protrusions 20α, 20b at both ends in the width direction, and the D-1-P25 is held between the protrusions 20α, 20b and the flat first conveyor belt 19. It is configured to do so. Therefore, D-1-P25 is moved in advance so that the stimulable phosphor layer 25h of D-1-P25 comes into contact with the second conveyor belt 20. p supply section 16
If it is housed inside, a space 20C can be formed between the effective photographic surface of the stimulable phosphor layer 25b and the first conveyor belt 20. Therefore, there is no risk of damaging the photographic effective surface of the stimulable phosphor layer 25b during the transportation of D-1-p25. X-ray photography is completed fd)-1-P2
5 are held between the first conveyor belts 19, 20 and conveyed in sequence as the drive drums 21α to 217.22α to 22- are driven. Then, they are guided by the guide roller 27vc through the separation section 24 and stored in the l@p storage section 17 one after another. A shielding plate 28α is installed to protect the thread path for conveying D-1-P25 from exposure to X-rays after the photographing is completed.
28g is not provided, the information stored in D-1-P25 does not deteriorate.

Furthermore, when the D-1-P storage compartment 17 is removed from the pedestal 13, the light-shielding lid 17b is provided to close the D-1-P storage compartment 17α. 1. p
The information stored in can be reliably read out.

In addition, before χ-ray imaging, D.1. P25 is dayl
Since light loading is possible, the top plate 12
．． A part of the pedestal 13 and the second conveyor belt 20 are made of transparent material, and 5tand-Ay from the D-1-P supply section 16 is
The conveyance path up to the position B is made visible.

Therefore, troubles during transportation can be easily detected at an early stage. Also, D, I・P25 is 5tand-
When setting the by position point, there is no need for a detection circuit using a microswitch or the like, and the setting can be done visually.

It goes without saying that the present invention is not limited to the embodiments described above, but includes various modifications within the scope of the gist of the present invention. In the above embodiment, the stimulable phosphor layer 257S is provided only on one side of the holder 25α in D-1-P25.
Although the explanation has been given by way of example, the stimulable phosphor layer 25b is provided on both sides of the holder 25α.

Needless to say, it can also be applied to those having 25A. In this case, as shown in the fourth panel, the first conveyor belt 19 also has protrusions 19α at both ends in the width direction.
, 19b, and a stimulable phosphor layer 25b.

There is a space 19C9 between 25b and the conveyor bell) 19.20.
Form 20C from the top. According to the above configuration, the holding body 2
It is also possible to use the stimulable phosphor layer 25A on one side of #5a or #-1: both sides having the stimulable phosphor layer 25A. Furthermore, the shape of the protrusions provided at both ends in the width direction of the conveyor belt (19, 20) is not limited to the above embodiment, and for example, the shapes shown in FIG.
t (') As shown in the figure, the protrusion is made into an uneven shape, and D-1
- If the upper and lower conveyor belts 19 and 20 which hold D-1-P25 are held between the convex portion and the recessed portion thereof, the holding force can be increased.

Furthermore, as a method of tensioning the second transport belt 20 with respect to the first transport belt 19', the second transport belt 20 is stretched so as to sandwich l-115 and form separation parts 23, 24 on the left and right sides. Rack, left and right KD-1-p supply section 1 of l-115
6 and the D-1, p storage section 17 can be arranged separately.

C. Effects of the Invention] As explained above, according to the present invention, the first... By sandwiching and conveying the stimulable phosphor plate between the second conveyor belts, it is possible to provide an X-ray diagnostic apparatus that can continuously perform X-ray imaging in large quantities. In addition, since the stimulable phosphor plate can be transported by intermittent driving of the transport belt in one direction, there is no need for complicated control to reciprocate the transport belt as in the past.
In addition, since conventionally no emphasis has been placed on the clamping force of the conveyor belt, the overall structure can be simplified and manufacturing costs can be reduced. Furthermore, by skillfully utilizing the characteristics of the stimulable phosphor plate, a portion of the transport path can be visually observed, making it possible to take prompt measures against troubles and the like.

Further, by forming the two-way portion between the conveyor belt and the stimulable phosphor plate, it is possible to extend the useful life of the stimulable phosphor plate, which can be recycled many times.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram showing an example of a conventional X-ray imaging device;
FIG. 2 is a cross-sectional view of an X-ray diagnostic apparatus according to an embodiment of the present invention, FIG. Figure 34 is a schematic perspective view showing an example of a conveyor belt, Figure 4 is a cross-sectional view of the conveyor belt when applied to a stimulable phosphor plate having stimulable phosphor layers on both sides, and Figure 5 (α) and (b) are cross-sectional views showing modified examples of the shape of protrusions on the conveyor belt. 12... Top plate, 16... Frame, 14...
X-ray tube, 15..."'s 16...D-1-p
Supply section, 17...D, 1. p storage section, 19.
...first conveyor belt, 19α, 19b...protrusion,
20...Second conveyor belt, 20a, 20h
-., protrusion, 21. z ~211.22z ~2
2g...Drive drum, 25...Storage phosphor plate CD-1-P), 25h...Storage phosphor layer. Agent Patent attorney Noriyuki Chika (and 1 other person) @ Figure 3 (a) Figure 4 Figure 1 b f (?c /Q Figure 5 (a) <b)

Claims (2)

[Claims] (1) An X-ray tube and an image intensifier are arranged facing each other with a top plate on which the subject is placed, and an endless illumination
, i2 are provided as conveyance means, and the first.
In an X-ray diagnostic apparatus in which a stimulable phosphor plate is sandwiched between second conveyor belts and guided to a photographing position to perform X-ray photography, the tenth conveyor belt has a range including the photographing position. The second conveyor belt is disposed parallel to the plate, and the second conveyor belt circumscribes at least a portion of the first conveyor belt that is disposed parallel to the top plate, and the other portion is separated from the first conveyor belt. a stimulable phosphor plate supply section and a stimulable phosphor plate storage section arranged to have separate separation areas and disposed in the separation area; An X-ray diagnostic apparatus characterized in that at least one of the second conveyor belts is provided with protrusions protruding from opposing surfaces at both end portions in the width direction of the belt. (2) The second conveyor belt is formed of a transparent member, and the portion of the top plate that faces the thread path from the stimulable phosphor plate supply section to just before the p-X-ray imaging position is formed of a transparent member. An X-ray diagnostic apparatus according to claim 1, characterized in that: