JPS60104936A - High speed photographing stand using accumulative fluorescent sheet - Google Patents

Abstract

PURPOSE:To improve the handling capability of an accumulative fluorescent sheet by fitting attachably/detachably a light shielding magagine successively receiving and storing the accumulative fluorescent sheets fed from a photographing position to the body of a photographing stand. CONSTITUTION:The 1st storage part 2 storing an accumulative fluorescent sheets 5 before photographing; the 2nd storage part 3 storing photographed accumulative fluorescent sheets and attachable/detachable to/from the body of the photographing stand and a carrying device extracting each sheet from the 1st storage part 2, carrying the extracted sheet to the photographing position at a high speed and then carrying the photographed sheet to the 2nd storage part 3 at a high speed are arranged on a high speed photographing stand 1. To remove dispersed X-rays, a glid 4 is inserted between the carried sheet 5 and a subject 20 at the photographing position. The glid 4 is moved in parallel with the sheet synchronously with the irradiation of X-rays, so that a clear final picture is obtained. Thus, the handling capability of the accumulative fluorescent sheets on the high speed photographing board is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention provides an object to be photographed using a large number of stimulable phosphor sheets. It is used C. This is a method of displaying images by sequentially projecting X-ray images onto a large number of X-ray films.
This method is suitable for sequentially imaging multiple X-ray films to see the appearance of the shadows changing from time to time when the diffusion speed of the contrast medium differs depending on the patient.

In this high-speed podium, the X-ray film is used in an I-shaped form, for example, by sandwiching the X-ray film between two intensifying screens in a Lindidge shape and storing it in a flexible light-shielding bag.

The convex speed decoy stand in which the bag containing the X-ray film is used has a first storage section that stores the unexposed bag, and a first storage section in which the bag is moved from this storage section μ and the X-ray film is transferred to the X-ray transmitter 1. Sequentially high-speed IF feeds the exposed dust shadows,
The transport mechanism that sequentially transports the 1!2 1 day shadow bay bags exposed at the same 1lii shadow position at a high speed, moves to the right of the second storage section that stores the 1lia shadow bag that has been transported at a speed of 110 and moves to J3.
This will allow you to place the subject on top of the shooting stand.

Back 1.1,X used for this type of photography stand
Sufficient consideration has been given to light shielding of the line film, for example, the first Δ
We will construct lfi as shown in Fig. 113).

In other words, seal the black plus book sea I-2Δ, 2 [3 on the three sides 20, 21, 22, which has sufficient light-shielding properties, and form a bag shape with only the - sides closed. Then, on the listening side, upper and lower listening edge parts 2a and 21+ are installed in series,
On the back side of the edges 2a and 2b, there is 1 piece on the entire length.
? A fine hook-shaped fiber is arranged in the snare 2a<-15 and a large number of fine loop-shaped fibers are arranged in the capacity, and the surface facing C is removable. (The open side) has sufficient light.

The X-gl film 25 sandwiched between a pair of intensifying screens (U in the figure) is attached to the seal portions 2 on three sides as shown by the dashed lines.
0.21.22, it is housed inside the surface fastener 2C, and is transported while being shielded from light.

This J-Ute conventional type pack has 25 x-ray films.
The upper HD opening edge is used to reduce the light shielding to 1 minute. Between 2a and 2b, the hook-and-loop fastener 2C is for loading and unloading the film 25.
] is tightly closed, and during this time [Itt in the
Due to the small amount of space, it is difficult to insert and take out the X-ray film 25, and there is a problem with productivity.

On the other hand, recently, a recording and reproducing system has been proposed (6) for radiographic imaging using an accumulative phosphor stand.
There is.

Here ('M li'i's fluorescent light rest is body QJI!i!
When exposed to radiation (X-rays, alpha-rays, beta-rays, gamma-rays, ultraviolet rays, etc.), some of this energy is absorbed and accumulated, and the visible light When exposed to excitation light q1 such as This is a device that uses a light body, and stores information on both radiation and rays of the human body, etc.
This accumulation (? photoelectrically read out the image fq
A signal is used as a signal, and based on this image signal, a radiographic image 1p is recorded as a visible image on a display device such as a photographic light-sensitive material, or a display device such as a CR1. No. 55-12429, No. 5G-1139
54] etc. ) This system uses an intensifying screen and XI! I!
Compatibility with Noilm! Covers an extremely wide range of radiation exposure compared to conventional family 01 radiographic systems using -C
It is difficult to record and reproduce the image 1τt.) It has practical advantages. .

In other words, storage fluorophores (CIJ, radiation exposure)
It is recognized that the amount of emitted light produced by stimulated luminescence due to excitation after accumulation is extremely proportional to −(1=t−)′U in a wide range, and therefore, the amount of emitted light produced by excitation after accumulation is proportional to 1, the Group 04 ray exposure rIt varies considerably, and the light intensity of the emitted light is read, the gain is set to an appropriate value of 1, and the output is transferred to the photoelectric conversion means (converted into an electrical signal. , using this electric signal to create a tJJm picture and record it on a Shinsenkoji 1 etc. (by reproducing Tit?!a on a display device such as CI<i, the radial radiation exposure) To improve radiological images unaffected by fluctuations in suspension to a 1:1 level.

Also, according to this system, W + Kozue 11 fireflies) are accumulated and distributed in the body! After converting the IF4-ray image information into an electrical signal, appropriate ILi processing is performed, and this electrical signal is used to convert the radiographic image into a recording material such as ηShinkozuki fi1, C1<
By reproducing the image as a visible image on a display device such as a display device,
A radiographic image that is suitable for observation and interpretation (appropriate for diagnosis 117i) @ '& t! ? It can also have extremely great effects.

If a high-speed imaging platform like that used for conventional X-ray photography can be adopted in the UJ system for recording ray images using this storage fluorophore G1~, the above J and U diagnosis can be achieved. A large number of 11 excellent radiological images at high speed? The diagnostic effect is extremely large.

In particular, as mentioned above, high-speed podiums often drip onto the DOL angiogram, so we recommend using this stimulable fluorophore for a line image recording and reproducing system. If you go to 111, you can further improve the performance of 11JI of the face tube J Takashi image transfer! ′+
It is extremely attractive that it can be used for medical diagnosis and contributes to medical diagnosis.

Deko-C1 before;di's Xwai (-for Noilm+!'!l
It is conceivable that the Hayaken shadow table could be used for storage 11 phosphor sheets.

However, since X-ray film has a 46L C sensitivity of 1 to 1, it is maintained in a completely light-shielded state and does not deteriorate during development. In the high-speed shadow f3, the X-ray room is housed in a 101 transport pack having the structure as described above,
The material is supplied to the first storage section in a completely light-shielded state, and taken out from the second storage section at J, after the surface shape, and then taken out from the bag and developed in a dark room.

On the other hand, stimulable phosphor sheets do not require light shielding before the dust shadow (that is, before the X-ray image is accumulated and recorded), and the light shielding properties required after removal are not required for X-ray film. Therefore, when applying a stimulable phosphor sheet to a 5-speed imaging platform, the conventional From the point of view of workability, 1q is selected as the 2-ma-1!8 Nogawa back.
It's not a strategy. Special 1' of storable phosphor sea 1~ mentioned in ``2''
Taking l into consideration, the stimulable phosphor C1- has a light-shielding property +J
Although it is not very expensive, it is preferable to use it housed in a bag that makes it easy to take it in and out, or to use it naked from the viewpoint of workability.

However, due to concerns about workability, the stimulable phosphor sheet was housed in a relatively simple light-blocking bag and left alone or naked. ``11 If it is for historical purposes, its storage (ri ll
There is no problem with 1) where the phosphor sheet is inside the high-speed imaging platform, but each one is taken out from the high-speed 11fu imaging platform and 1=
Sometimes problems arise. However, since the interior of a high-speed imaging stand is generally maintained in a chamber state by a housing, etc., In the transport room J3 and the second storage section, there is an adverse effect (accumulation due to light, loss of tlV of energy). When the I7 light 1 star 1- is taken out from the second collecting section to the outside of the high-speed photographing stand, the indoor light causes the local part of the stimulable phosphor sea 1- to become LL, the whole, J3, and a part of the accumulated energy, 19 In some cases, the problem arises that all of 'C' disappears.

Therefore, taking workability into consideration, we compared the C-accumulative phosphor sea 1-. When using a stand, use the high-speed shooting stand.
It is essential to have a side panel that allows you to take out the light beams 1 to 1 in a state where they are shielded from indoor light.

(Objective of the Invention) Therefore, the object of the present invention is to widely (,1, there is no necessity to use the accumulative qQ light body 1- in a complete 1 or 2 continuous light state, 4; f, -) Handling of stimulable phosphor sheet 1
! This is to provide an 11-speed decoy table with improved X-ray transmission.

More specifically, the purpose of lighting wood is to provide a relatively simple light-shielding device (1) that is housed in a shipping bag or
J. Providing an ISX X-ray transmission image convex book shadow table equipped with a mechanism that allows the photographed stimulable phosphor sheet to be taken out of the machine under indoor light; It's about doing.

(Structure of the Invention) A fast photographing stand (J
, Shooting position 1) S sent out from s +/, : The part (second storage part) that sequentially receives and stores the accumulated 11゛ fluorescent material sea 1- is in the one-door type base body! +112 set up so that it is possible to use a light-shielding phosphor, and then add a cumulating phosphor sheet to indoor light J: V) in a light-shielded state.
III Shadow table main body J.

It is designed so that it can be taken out.

In other words, the X-ray transmission image fast-flit shadow stage of the present invention sequentially sends a stimulable phosphor sheet to a door-shaped position that receives the X-rays that have passed through the subject, and this accumulation 11 Fluorescent sea 1
- Sequentially project the X-ray transmitted images of the subject onto ° (accumulate and record, then send out the ll1l imaged storage phosphor sheet sequentially from the Mυ shadow position 1 X-ray transmission 1τ! The present invention is characterized in that a light-shielding magazine is removably installed in the main body of the photographing stand, into which the phosphor sheets of the storage 11 sent out are sequentially placed and stored.

(Embodiments) The embodiments of the present invention between stations will be explained below with reference to the drawings.

FIG. 2 is a schematic diagram illustrating an embodiment of the high-speed X-ray transmission image imaging platform of the present invention. This n1-speed photographing table 1 is used to store the stimulable phosphor sheet (comparison section I1T) before photographing. :'1st storage section 2 for storing the stimulable phosphor sheets 1 to 1), accumulation 1'J phosphor sheet 1 after scratching
A second storage section 3 for storing ~ and the '1st storage section 2 /
Send 111'J high speed 111'J to the honorable position where you can take out the accumulation 11 fluorescent sheets 1- one by one, and after finishing the 1st public image 110? A transport system was installed to send the optical sheet to the second storage section 3 again at high speed (11θ), and a grid 4 for removing stray X-rays was sent into the shadow section at 11 before the shooting position. It is arranged so as to be interposed between the accumulation 11 fluorescence interval 5 and the exposure interval 20. J: Uni, this grid 4 is the same as the X-ray irradiation level.
Preferably, it is a movable grid that moves 1J and parallel to the sea 1-5.

In the first storage part 2, there is no fli1 shadow accumulating phosphor sheet 1-5.
a.

! + b , 5 C..., ) 0 Multiple pieces of lees are collected (1j1; When in the shadow, the power of the motor 6 is transferred to the clutch 7
It is transmitted to the conveyor U-ra 8 via. The guides L1-ra 9a to 9e are attached to the conveyor lawn by shuttles (111 and conveyor bells I and 10 are stretched endlessly, so the conveyor belt 1-10 moves in the direction of the arrow in conjunction with the rotation of l-ra). Next, when pushing the trenoid 11, the pusher J112 operates and C
The conveyor belt 10 is brought into contact with the accumulation +1 phosphor sheet 1- housed in the first storage section 2. The conveyor belt 10 and the stimulable phosphor sheet are temporarily locked by some means so that they can be hung up later, or 4i4 so that they can be sucked.
has been completed.

For example, the locking claw LJ installed on the transport bell i~1() can be configured to lock with one ring provided on the sea I~, or an adhesive tape can be installed on the transport bell 10. or 1
The so-called Velcro fastener -■ or # is attached to the feeding belt 10.
, it is possible to install an AiE tape or a separating tape on the sheet 1-, or to configure the conveyor belt 10 and the sheet so that they are attracted by magnetic force.

11 related to conveyor bell 1-10, accumulated 4 glued or sucked! When the camera body 1-5 is brought into the same photographing position as the photographing position, the switch 13 detects this, and this detection signal is sent to the 14 ii -1 input. Then, the clutch 7 connected to the rotor 6 is disengaged, the brake (I!f in the figure) is activated, and the conveyor bell l- is stopped.

In this manner, the photographing position is stopped at step 4, and an X-ray transmission image is projected onto the sterile phosphor sheet 5 from the X-ray photogeneration device 19 via the subject 20 in accordance with the commands from the control unit 14. be done.

At this time, the timing of each projection is the same! ! J
~ It is preferable to move the grid 4 parallel to the sheet 5 in accordance with a preprogrammed sequence in the roll section 14.

In this embodiment, (.11.1iliFJI grid 4 is taken at its oppositely curved ends (; and a solenoid 15 is provided, and when in use, before each projection, the solenoid 15 is energized 4=J by a signal from the v1. Set the grid 4 at the starting point of the movement, and use the projection command signal as a reference.
This signal is sent to the solenoid 15 at an early stage and the I grid 4 is moved by the force of the leaf spring for each projection. The structure is repeated every time. (Alternatively, the opening signal of the trenoid 15 may be used as the base tM, and a projection command may be issued to the X-ray generator. The movable grid is started a certain time before the start of each projection, and after each projection, i'iJ #IJ
Although it is preferable to lock the grid at the starting point of movement, it is also better to move the movable grid continuously during a series of projections.

In this way, the transmitted direct X-ray beams, which are effective image information, pass through the movable grid 4.
Is it directly below? h treetop bamboo phosphor see (-5 irradiated on soil.

Conversely, most of the GJ of the XFA scattered by the subject 2 ( ) is removed by the movable grid 4 .

In addition, since the movable grid 4 is moved in synchronization with the imaging of each X-ray transmission 1τ in this way, no stripes are projected onto the LIIft phosphor sheet 1. As a result, Moiré fringes are prevented from appearing on the final image reproduced by scanning and scanning the above-mentioned sheet]~ on the head of the radiation image reading device.In this way, grid 4 can be set to sheets 1 to 5. The No. 1 moving type that moves parallel to the final image is
This is to prevent and cover the occurrence of streaks.
For details, please refer to Honkawa's special request 1984-2.
1223 (see issue i).

It ends as soon as the X-ray irradiation ends (J, replay,
Release 1, connect clutch 7, and go to the next tree! At the same time, send the shadow storage phosphor sheet 51) to the 1-layer molding section, and also send the cumulative phosphor sheet 1-5 with 1q shadow flowing from the fli1 Akira section. Q fit, the seas 1 to 5 and the conveyor bells 1 to 5
Section 11 of 10, contact %'I'b or release the suction section 21, J: transfers the sheet 5 to the conveyor belt 10HL+RA+1!2L! L, second storage section 3, J rope t5, feed into the magazine 3 attached to f3.

I'm planning on taking another photo, and during this time, I'll apply suction to the solenoid 15 while the movable grid is in operation. jUh.

Also, the above-mentioned ^speed photography stand is indicated by the 0 broken line in Figure 2! X-ray fluorescence intensifier 8-tube camera combination μ22 at ζ position 4 171
li! The so-called "Nor Au Sugo" can be performed by one person.

7. The gun 3 includes a shutter 3a that can be opened and closed from the outside using a handle, knob, etc. (I" shown in the figure).

A leaf spring 3b is provided to guide the storage device 1' and the phosphor sheet 1- and allow them to fall loosely into the magazine. The sea + - grass which has been removed from the IIFJ sending bells 1 to 10 passes through the heard cylinder 38, is guided by the leaf spring 31), and is stored in the magazine 3. As shown in FIG. 33, when the required number of stimulable phosphor sheets 1 to 1 are stored, the shutter 38 is closed and the magazine installation part f (!! rJt from the main body
l1t2 L! L, I'm disappointed. Save money in this way (
The hemispherical phosphor sheets 1 to 1 are taken out from the mirror table in a continuously illuminated state.

Even if the magazine is taken out from the magazine inside the device, it is still (112 readings transferred to another magazine inside the room).The former /j
Law in particular? The latter method is particularly suitable when the 5-laminated phosphor sheet is used bare, while the latter method is used when the stimulable phosphor sheet is stored in an IIQ shipping bag. (In this case, the stimulable phosphor sheets 1 to 1 in the transport bag are removed from the bag 111 and transferred to another magazine.)

Incidentally, the magazine shown in FIG. 3; 1. i! of the present invention;
``!This is an example of the magazine that makes up the shadow stand, and it has a seat tab that can be closed when attached to the podium. - 1!J1, J, one (one that can shield the inside from light) is 1. [, its construction (13J, and the shape number, L. .

Also, the high speed 11i! shown in FIG. Also the shadow table: 1. Based on the embodiments of the present invention, various changes are possible. For example, as shown in FIG. By sandwiching the stimulable phosphor sheets 1~ between two bells moving at approximately constant speed, one J (?! This transportation method is particularly suitable when the stimulable phosphor sheet 1 is to be used without being exposed.In addition, the interior of the 5-speed stage is Since it is kept in a dark room condition, the radiographic image 1τξ stored in the imaged phosphor sheet fli1
Although it is not uncommon for the camera to receive imaging fees, it is important to ensure continuous lighting of the sheet, especially when the phosphor sheet 1- is used naked. For, 11′! i speed!
+1 Inside the podium, at least the transport incense part J3J and the magazine installation part J3J from the honoring position are provided with special light shielding means.

On the morning of Thursday 11th, there was a stimulable phosphor camera on the camera stand.
- It is not necessary to completely block light, so from the point of view of workability,
Accumulative phosphor shea 1-4. L? 'l! )1. Mag,
Alternatively, it is housed in a 1112 transport pack with relatively simple light-shielding properties. =1-
An example of a transportation bag is shown, and Fig. 4Δ is a 1ζ17 view showing the front surface, Fig. 413 is a plan view showing the back side, and Fig. 4C is a perspective view showing the open state. be.

As shown in these drawings, the 1lfl transport pack 50 that stores the storage 1 (1 phosphor sheet 55) is made of two upper and lower flexible light-shielding materials. 50△ and Moji-h5013, -side 5
1 and the two sides 53.54 that touch one side 51 -j
vinegar! d3 to the parts 53a and 54a adjacent to +1 and seal P1- (which is the - side F) on one side opposite to 1 (I6 etc., the part close to the opposite side 56 of the two sides) 53b, 5 old). This solution/+5! Part of the story, before disbanding! ) 6 has a so-called surface I snare consisting of a Δ surface 52Δ with a large number of fine hook-shaped fibers 1 and an 8-surface 5213 with a large number of fine loop-shaped fibers (5G before dissolution). 41112 is freely closed, and the upper and lower sheets a3 are placed in this part;) () Δ, 1i11 of 5013 is stopped by %Jj. Also, before this dissolution, 5G
A flap ``+20'' facing inward is provided on the back surface of the sheet so that the accommodated stimulable phosphor sheet 1-55 comes into contact with or engages this one flap 52C. This makes it possible to prevent GJ from being pulled out.Furthermore,
1I [As shown in Figure 3, lower seas 1-5 (l
[On the surface of 3, set 1 snow 57 (J, carry) Please send 50 bags to 1 to 1 general delivery bell.
'r 1112 Freely locks.

(Effect of the invention) 4 (According to the high-speed photographing stand of the invention, it is not necessary to use the stimulable fluorescent f-sheet in a completely light-shielded state, and it is relatively easy to use it in the light-shielded /J state or (J It is possible to use C in the naked state. Therefore, the accumulation ↑1-fluorescent sheet (-
The handling of t~ becomes easily 4. In particular, according to an embodiment in which the grid is movable and moves parallel to the phosphor sheets 1 to 1, the transmitted direct X-ray The stripes corresponding to the foil of the grid are not recorded on the stimulable phosphor sheet because the phosphor is not stopped during the exposure time, and the radiation image reading device detects this stimulant. Since there is no possibility of Moire fringes occurring when reading recorded information on the phosphor sheet, a clearer final image can be obtained.

[Brief explanation of the drawing]

Figures 1A and 1B are drawings of an example of a transport bag used in a high-speed imaging platform using conventional X-ray film, Figure 1Δ is a perspective view of it, and Figure 1B is its opening. FIG. 1 is a perspective view showing the opened state. Fig. 2 is a schematic diagram of an embodiment of the high-speed photographing table of the present invention, and Fig. 3 is a side sectional view showing an example of the magazine forming the IM of the high-speed photographing table of the present invention with the shutter closed. , Figures 4Δ to 4C are drawings of an example of a storage 11 phosphor sheath 1-111i1 transport pack used for metal engraving, and Figure 4Δ shows its surface. Fig. 413 is a plan view showing the back side, No. 4C "11"
FIG. 1... High-speed 1st image stand 2... First storage section 3... Second storage section 3a... Shutter 3b... Leaf spring 4
...Movable grid 5.5a ~ sc, 5a', 5
b', 5c'...Stormative phosphor sheet 10...If! Q 375 bells 1 to 14...controller 1 to roll section 17...solenoid circuit section 50...accumulative phosphor sheet conveyance pack 5()Δ...
・Top sheet 50B...Bottom sheet 51...Sealed side 52Δ, 5213...Surface flap 1 snapper-52G...Flaps 53, 54...Part W? I'd partially sealed two sides...Storage phosphor sheet 1-

Claims (1)

[Claims] (1) Sequentially feed the 11 accumulation phosphor sheets to the copying position that receives the X-rays that have passed through the subject, and then press the 11 accumulation phosphor sheets! The X-ray transmission images of the exposed IA are sequentially projected and recorded, and after that, the captured phosphor sheet 1 is recorded.
- Send out X-ray transmission 1 in sequence starting from ``1'' at the shooting position (J3 is on the high-speed podium and receive the sent out cumulative/fluorescent sheets 1- in sequence) and store it. A high-speed FLTF shadow stand using a stimulable phosphor sheet 1, which is characterized by having a magazine with 1'1 removably attached to the podium body. There is an intervening theory between the subjects in the 75 Jochiku sheets.
It is characterized by providing means for moving the υ-moving grid in parallel to and parallel to the stimulable phosphor sheets 1- and synchronously with the projection of the X-ray transmission image relative to the sheets 1-. Features '1' A rapid image repellent table as set forth in claim 1.