JPS6274843A - X-ray diagnosis device - Google Patents

Abstract

PURPOSE:To prevent sheets from falling down toward an outer direction at an upper surface of a tray containing piled sheets of fluorescent material, by providing a stopper adjacent to a tray insert hole in such a manner that when the tray stands upright it abuts against the sheets. CONSTITUTION:A support member is disposed adjacent to an opening of an insert hole of a tray containing unit 90 in a direction of a short side of a tray. A pair of rollers 94a, 94b made of a resin material, which serves as a stopper, is attached to the support member. Therefore, when an extreme edge layer of fluorescent sheets 11 contained is adsorbed by a pair of adsorbing unit 13A, 13B to be taken out, an edge of the sheet 11 strikes against the rollers 94a, 94b to cause the rollers to rotate. As a result, its recorded surface is not injured. In addition, when rising and falling of a bed roof on which a body to be diagnosed is placed causes the tray 12 to stand upright, the sheet 11 at the extreme edge abuts against the rollers 94a, 94b so that the sheet is prevented from falling down toward an outer direction of the opening.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention belongs to the field of medical equipment for diagnosis. Continuously radiation v1. The present invention relates to a radiological diagnostic device that performs shadowing.

[Technical background of the invention and its problems] Some types of phosphors contain radiation (X-rays, alpha rays, beta rays).

When irradiated with Y-rays, ultraviolet rays, etc., part of the energy of this radiation is accumulated in the phosphor, and then when the phosphor is irradiated with excitation light such as visible light, depending on the accumulated energy, The phosphor exhibits stimulated luminescence. A phosphor exhibiting such properties is called a stimulable phosphor.

Using this stimulable phosphor, radiation image information of a subject such as a human body is accumulated and recorded on a stimulable phosphor sheet (hereinafter also referred to as IP), and this IP is scanned with excitation light to produce stimulated luminescence. I let it happen! ! A radiographic image information recording and reproducing method has been proposed in which an image signal is obtained by photoelectrically reading exhaustive luminescence, and this image signal is processed to obtain a radiographic image of a subject that is suitable for diagnosis (for example, Japanese Patent Laid-Open No. 55-12429 , same 5
No. 6-11395, No. 55-163472 @, No. 56
-104645, No. 55-116340 Tan, etc.). In this method, the final image may be reproduced as a hard copy or reproduced on a display device such as a CRT. In any case, in such a radiation image information recording and reproducing method, since the IP does not ultimately record image information but temporarily carries image information, this IP may be used repeatedly. Moreover, if it is used repeatedly in this way, it is extremely economical. Therefore, in order to use the IP repeatedly, the IP after reading the image information by scanning the excitation light is
The radiation energy remaining on P is removed, that is, the afterimage is erased. This afterimage is erased by, for example, irradiating the entire surface of the sheet with light included in the excitation wavelength range of the stimulable phosphor constituting the IP, heating the sheet, etc., and the IP that has been erased has image information again. used for recording. In such a process, IPs whose afterimages have been erased are accumulated in an IP storage tray (hereinafter also simply referred to as a "tray") and loaded into a spot shot device in a radiological diagnostic apparatus.

The loaded IPs are taken out one by one and used to record radiographic images. However, in this spot shot device, when the tray is loaded or when the IP is taken out from the tray for recording after loading the tray, the IP that is accumulated parallel to the inner wall surface corresponding to the opening surface of the tray stands upright. In some cases, the tray is arranged or rotated in such a manner that the accumulated IP falls outside the tray opening, which is a common problem.

[Object of the Invention] The present invention provides a method for preventing the phosphor sheets from collapsing toward the outside of the opening even when the phosphor sheets accumulated inside the tray are arranged in an upright state as described above. It is an object of the present invention to provide a radiographic diagnostic apparatus with a reduced structure, in which the phosphor sheet can be easily and reliably taken out and stored.

[Summary of the Invention] To achieve the above object, the present invention provides a phosphor sheet storage tray that stacks and stores phosphor sheets formed into sheets containing stimulable phosphors, and a tray storage section having a tray insertion hole into which a body sheet storage tray is inserted, and the radiation image information of the subject is recorded on the phosphor sheet taken out from the phosphor sheet storage tray for diagnosis. In the radiological diagnostic apparatus, the tray storage section includes a stopper that allows the phosphor sheet to be taken out and prevents the phosphor sheet from falling down by abutting against the phosphor sheet in the outermost layer when the sheet storage tray is in an upright state. It is characterized by the fact that it is provided in

[Embodiments of the Invention] Hereinafter, embodiments of the radiological diagnostic apparatus of the present invention will be described with reference to the drawings.

The radiological diagnostic apparatus, for example, the X-ray diagnostic apparatus 1 shown in FIG.
An X-ray tube 2 for irradiating a subject (patient) with X-rays;
A bed top plate 3 is placed below the X-ray tube 2 to place the subject, a spot shot device 4 is placed below the top plate and includes an IP transport path, and a spot shot device 4 is placed below the top plate to place the subject. It consists of an image system 5 including an image intensifier that converts X-rays that have passed through a specimen into electrical signals. Incidentally, from the X-ray tube 2, X-rays are emitted for projecting a transmitted image of the subject onto an IF), and X-rays are transmitted for displaying the transmitted image of the subject on a display (not shown) as an X-ray transmitted image via the image intensifier. Two types of X-rays are irradiated.

The spot shot device 4 shown in FIG. 1 is roughly divided into a supply unit 10 that takes out and supplies a phosphor sheet (hereinafter abbreviated as IP) 11, a secondary erasing unit 20 that erases noise from the extracted IPll, and a A special equipment section 30 that transports the erased IPll and makes it standby once, a light shielding part 40 that blocks light from the secondary erasing section 20, and a special equipment section 30 that transports the erased IPll and temporarily puts the IPll on standby in the special equipment section 30. The holder part 50 that is transported to the position and held, and the photographed IPl
It is composed of a storage section 60 for transporting and storing the 1.

The supply section 10 is arranged above an IP accumulation tray 12 in which IPlls are stacked and set, a tray storage section 90 that stores this tray 12, and above the IPlls set in the tray 12. And from inside the tray 12
A pair of suction parts 13A, 1 for taking out ll one by one
3B and a take-out mechanism section 15 comprising a vacuum pump 14;
It is comprised of a delivery member 19 that guides the IPll taken out by this takeout mechanism section 15 in the transport direction.

Further, the secondary erasing section 20 includes a secondary erasing device 23 having a light emitting lamp 22 that irradiates light after the I P 1 '1 sent out from the sending member 19 passes above.

The special equipment section 30 has an outer belt 31 and an inner belt 32 that are driven by a motor (not shown), and a standby sensor that is a second sensor is provided on the downstream side of the outer belt 31 and the inner belt 32. 36 are arranged.

The light shielding section 40 includes a guide 41, a light shielding roller 42, and a light shielding plate 4.
3a and 43b, and a flaw detection device 48 is arranged near the light shielding roller 42.

The holder part 50 has an upper belt 51 and a lower belt 2 that are driven by a motor (not shown), and a position sensor 58 that is a third sensor is installed during the conveyance of both belts 51 and 52. It's placed. Also, this holder part 5
As shown in FIG. 2, the holder part 50 is movable along the guide shafts 82 and 82 in the direction of the arrow shown in the drawing (direction from the front surface to the back surface in FIG. 1).
The IPll held between the two is moved from an initial position A to an eye shadow position B. Note that the bed top 3 on which the patient is placed and the X-ray tube 2 are arranged above this imitation position B.
The image system 5 is arranged below the copying position B. After the copying is completed for IP, 11, the holder part 50 is returned to the initial position A, and IPll
The receiver is configured to pass the receiver to the storage section 60. still,
In FIG. 2, the limit switch 83 is part of the holder 5.
The limit switch 84 is a switch that detects that the holder part 50 has reached the copying position B.

The storage section 60 includes a drive belt 61 and a drive roller 6 that is in close contact with the drive belt 61 to convey the photographed IPll.
2, a feeding mechanism section 63, a tick-up magazine 65 that accommodates the photographed IPll, a presser plate 66 supported above the tick-up magazine 65, and a pressing mechanism section that pushes the IPll into the tick-up magazine 65. 67
and a barcode reader 70 that reads the barcode of the IPll.

Next, the tray storage section 90, which is a feature of the device of this embodiment,
The detailed configuration will be explained with reference to FIGS. 3 and 4.

3 is a sectional view showing the detailed structure of the tray storage section 90 in FIG. 1, and FIG. 4 shows the main parts of FIG.
Required for explanatory drawings viewed from one direction.

The tray storage section 90 is configured around a tray insertion hole 91 into which the tray 12 is inserted. A first support member 92 is installed near the opening of the tray insertion hole 91 in the lateral direction of the tray 12 (perpendicular to the paper surface), and the installed first support member 92 has approximately A pair of rollers 9 serving as stoppers are inserted through a second support member 93 bent into a letter shape.
4a.

94b is rotatably attached. roller 94a
, 94b are made of, for example, a resin-based material, and a portion thereof enters into the tray 12. Further, a surface 91a, which is the opening of the tray insertion hole 91 and faces the rollers 94a and 94b, is formed in a tapered shape. This tapered shape allows the tray 12 to be attached and detached from diagonally above as shown in FIG.
The side wall 12a of the tray 12 and the rollers 94a, 94b (7
) This is to prevent interference.

In the above configuration, the IPll of the outermost layer in the tray 12
is sucked and taken out by the pair of suction parts 13A and 13B, and the taken out IPll is sent out by the delivery member 19. At the time of taking out, the pair of suction parts 1
The ends of the IPII adsorbed by 3A and 13B contact rollers 94a and 94b, and this contact causes roller 94a to
, 94b rotate, the IPll can be taken out without damaging its recording surface. The extracted IPll is sent to the secondary eraser 20. It is transported to the imaging position via the special equipment section 30, and is used for recording radiographic image information of the subject.

In addition, when the tray 12 is in an upright state due to the raising and lowering of the bed top 3, the outermost layer IPll is moved to the roller 94a.
, 94b, thereby causing the I to the outside of the tray opening.
This prevents the PLL from falling down.

In this way, in the device of this embodiment, since the rollers 94a and 94b are attached so as to fit into the tray 12, the IPll can be taken out easily and reliably.
In addition, when the tray 12 is in an upright state, it comes into contact with the IPll of the outermost layer and can prevent the IPll from falling down. In addition, rollers 94a and 94b
is attached to the tray storage section 90, and the tray 12
Therefore, the IP can be easily and reliably stored in the tray 12 at locations other than the tray storage section 90.

Although one embodiment of the present invention has been described above, it goes without saying that the present invention is not limited to the above embodiment, and can be modified as appropriate within the scope of the gist of the present invention.

For example, in the above embodiment, a pair of rollers 94a and 94b are used as the stopper.
The number of rollers may be one or three or more, and is not limited to rollers.

In the above embodiment, the pair of rollers 94a and 9/1b were made of resin, but if rollers made of a slightly thicker coating of urethane foam (sponge) or the like were used,
Due to the elastic deformation of this urethane foam, it is possible to prevent interference when attaching and detaching the tray 12.
There is no need to purposely make the surface 91a facing 4a and 94b tapered. Further, as shown in FIG. 7, the roller 94a
.

If the rollers 94b are biased by a biasing member (such as a spring) 95, the tray 12 can be attached and removed against the biasing force of the biasing member 95, so that the rollers 94a,
There is no need to intentionally make the surface 91a facing 94b tapered.

[Effects of the Invention] As detailed above, according to the present invention, even if the phosphor sheets accumulated inside the tray are arranged in an upright state, the phosphor sheets do not fall down to the outside of the opening. It is possible to provide a radiation diagnostic apparatus having a structure in which the phosphor sheet can be easily and reliably taken out and stored.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of the internal structure of a spot shot device in a radiological diagnostic apparatus according to an embodiment of the present invention, Fig. 2 is a plan view of the holder section in Fig. 1, and Fig. 3 is a tray storage space opened in Fig. 1. FIG. 4 is an explanatory diagram of the main part of FIG. 3 viewed from the direction of arrow X1. FIG. 5 is an explanatory diagram for explaining attachment and detachment of the phosphor sheet storage tray. FIG. 6 is an explanatory view showing an X-ray diagnostic apparatus, and FIG. 7 is a sectional view showing a modification of the present invention. DESCRIPTION OF SYMBOLS 11... Phosphor sheet, 12... Phosphor sheet storage tray, 90... Tray storage part, 91... Tray insertion hole, 9
4a, 94b...Rollers (stoppers).

Claims (4)

[Claims] (1) Comprised of a phosphor sheet storage tray that stores stacked phosphor sheets formed into sheets containing stimulable phosphor, and a tray insertion hole into which the phosphor sheet storage tray is inserted. A radiation diagnostic apparatus is provided with a tray storage section, which records radiographic image information of a subject on a phosphor sheet taken out from the phosphor sheet storage tray for diagnosis. A radiological diagnostic apparatus characterized in that the tray storage section is provided with a stopper that prevents the phosphor sheet from falling down by coming into contact with the phosphor sheet of the outermost layer when the storage tray is in an upright state. (2) The stopper is attached to fit into the phosphor sheet storage tray, and the opening of the tray insertion hole facing the stopper is tapered. A radiation diagnostic apparatus according to claim 1. (3) The stopper is biased to enter the phosphor sheet storage tray, and the phosphor sheet storage tray is attached to and removed from the tray storage portion against this biasing force. A radiological diagnostic apparatus according to claim 1. (4) The radiological diagnostic apparatus according to any one of claims 1 to 3, wherein the stopper is a rotatably mounted roller.