JPH0199037A - Recording and reading device for radiograph information - Google Patents

Abstract

PURPOSE:To continuously execute high speed photographing twice by integrating a photographing device with a reader which executes the read and deletion of image information and circularly conveying an accumulation type fluorescent material sheet by 1st-3rd conveying parts. CONSTITUTION:When a moving unit 4 is moved left and the radiation of X rays is executed, an image is recorded on the accumulation type fluorescent material sheet 1 conveyed from a 1st sheet housing part 40 by a 1st sheet conveying part 70 in an image recording part 10 and the sheet 1 already recorded is housed in a 1st housing member 51 of the 2nd sheet housing part 50. While the unit 40 is moved right and monitoring before photographing is executed, the sheet 1 already photographed of the member 51 moved by an endless belt 7 is supplied to the 3rd sheet housing part 60 of a deletion part 30 integrated with an image reading part 20 through said part 20 by the 2nd sheet conveying part 80. Thereafter, the sheet 1 already deleted is made to circulate to the housing part 40 by the 3rd sheet conveying part 90 in the same way, so that high speed photographing is continuously executed twice.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of the Invention) The present invention relates to a radiation image information recording/reading device suitable for performing high-speed imaging such as angiography. The present invention relates to a radiographic image information recording/reading device that can perform radiographic image information recording and reading.

(Conventional technology) Certain types of phosphors are exposed to radiation (X-rays, α-rays, β-rays.

When irradiated with γ-rays, electron beams, ultraviolet rays, etc., some of the energy of this radiation is accumulated in the phosphor, and when the phosphor is then irradiated with excitation light such as visible light, it will respond to the accumulated energy. The phosphor exhibits stimulated luminescence. A phosphor exhibiting such properties is called a stimulable phosphor (stimulable phosphor).

Using this stimulable phosphor, radiation image information of a subject such as a human body is recorded on a sheet of stimulable phosphor, which is then scanned with excitation light to cause stimulated luminescence. A system has been proposed that obtains an image signal by reading the image and processes this image signal to obtain a radiation image of a subject with good diagnostic suitability (for example, Japanese Patent Laid-Open Nos. 55-12429 and 55-12429).
5-11 [No. 1340, No. 55-163472, No. 5
B-11395, No. 56-104645, etc.).

Furthermore, in the radiation image information recording and reproducing system described above, the stimulable phosphor sheet does not ultimately record image information;
Since the stimulable phosphor sheet temporarily carries image information in order to provide an image to the final recording medium as described above, it may be used repeatedly, and it is also possible to use it repeatedly in this way. It is extremely economical to do so.

In order to reuse the stimulable phosphor sheet, the radiation energy remaining in the stimulable phosphor sheet after the image information has been read can be removed using, for example, JP-A-58-11392, JP-A-58-11392;
The stimulable phosphor sheet may be used again for recording radiation images by emitting it to erase residual radiation images by a method such as that shown in Japanese Patent No. B-12599.

Therefore, the present applicant has incorporated an image recording section for taking pictures, an image reading section for reading, and an erasing section for erasing into one device, and has repeatedly used the stimulable phosphor sheet by circulating it between each section. We previously proposed a device that does this (hereinafter referred to as a built-in type device). This built-in type device is extremely convenient because it eliminates the need to carry the stimulable phosphor sheet separately from the device or to take the stimulable phosphor sheet in and out of the device.

By the way, when performing angiography or the like in the above system, high-speed imaging is performed. This high-speed shooting
Radiographic images are sequentially taken on a large number of stimulable phosphor sheets in a short period of time, and when the diffusion speed of the contrast medium differs depending on the patient, as in the above-mentioned angiography, a large number of stimulable phosphor sheets are taken. It is suitable for sequentially photographing the state of angiography that changes from moment to moment on a body sheet. The applicant has already proposed a device for performing the above-mentioned high-speed imaging using a stimulable phosphor sheet (Japanese Patent Laid-Open No. 80-104936).
(See No., etc.) Such a device takes out a plurality of stimulable phosphor sheets one by one from a storage section that can store a plurality of stimulable phosphor sheets that can be photographed, and sequentially sends them to a photographing position.
The photographed stimulable phosphor sheet is carried into a magazine that is removably attached to the device.

(Problems to be Solved by the Invention) However, when the above imaging device is used, it is necessary to load a large number of stimulable phosphor sheets into the device before performing - times of high-speed imaging. After the photographing is completed, it is necessary to take out the magazine containing the photographed stimulable phosphor sheets from the photographing device and load it into an external reading device, and this work is done manually, which poses problems in workability. Ta. Furthermore, in the above-mentioned angiography, since high-speed imaging of multiple stimulable phosphor sheets is usually performed twice at a predetermined interval, the stimulable phosphor sheets must be taken in and out twice. This has the disadvantage that the work of attaching and detaching the stimulable phosphor sheet becomes even more complicated.

The present invention has been made in view of the above-mentioned problems, and provides the above-mentioned built-in type device that can perform high-speed imaging, and the stimulable phosphor sheet is manually removed before and after imaging. The purpose of this is to enable two consecutive high-speed photographing operations without having to take the camera in and out.

(Means for Solving the Problems) The radiation image information recording/reading device of the present invention accumulates radiation image information on a stimulable phosphor sheet by irradiating the stimulable phosphor sheet with radiation having image information. an image recording section for recording; in the image recording section, a stimulable phosphor sheet on which radiation image information has been stored and recorded is irradiated with excitation light to generate stimulated luminescence light, and this stimulated luminescence light is read out photoelectrically; an image reading unit that obtains an image signal; an erasing unit that releases radiation energy remaining in the stimulable phosphor sheet after the image information has been read in the image reading unit; a first sheet storage section that stores stimulable phosphor sheets and has a sheet take-out means for taking out the stored stimulable phosphor sheets one by one; two sets of storage members capable of storing a plurality of the stimulable phosphor sheets; and placing each storage member alternately at a first position for receiving the stimulable phosphor sheet on which the image information is stored and recorded, and directing the storage member receiving the stimulable phosphor sheet toward the image reading unit. a second sheet storage section that can be moved to a second position for carrying out one sheet at a time; a second sheet storage section that stores a plurality of stimulable phosphor sheets that have been erased in the erasing section; a third sheet storage section having a sheet take-out means; after the stimulable phosphor sheet taken out from the first sheet storage section is sent to the image recording section, the storage member at the first position; a first sheet conveying unit that transports the stimulable phosphor sheet taken out from the storage member located at the second position to the image reading unit and the erasing unit; The second to be carried into the department
and a third sheet transport section that transports the stimulable phosphor sheet taken out from the third sheet storage section into the first sheet storage section.

(Function) According to the above-mentioned device, the photographing device for high-speed photographing and the reading device for reading and erasing image information, which were conventionally separate devices, are integrated, and the stimulable phosphor sheet is Circulating conveyance by the third sheet conveying section eliminates the need to take the stimulable phosphor sheet in and out of the apparatus.

In addition, in this device, the stimulable phosphor sheet that can be photographed can be stored in both the first sheet storage section and the third sheet storage section, so the stimulable phosphor sheet can be stored in both the first sheet storage section and the third sheet storage section. The sheet is taken out and high-speed photography is performed, and then the stimulable phosphor sheet is carried from the third sheet storage section to the empty first sheet storage section, and then the stimulable phosphor sheet is loaded from the first sheet storage section again. If you take out the camera and perform high-speed photography, you can perform two high-speed photography almost consecutively. In addition, by providing a second sheet storage section including two storage members, the stimulable phosphor sheet that has been photographed can be stored in each storage member at the first position for each high-speed photographing. Each can be stored inside. The stimulable phosphor sheet carried into the storage member is taken out from the storage member after the storage member has moved to the second position and is sequentially conveyed to the image reading unit, so that image information can be read as appropriate. It will be done.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1(a) to 1(d) are schematic side views showing a radiation image information recording/reading apparatus according to an embodiment of the present invention.

This apparatus includes an image recording section 10 that records (photographs) radiation image information on a stimulable phosphor sheet 1. An image reading section 2 that reads image information recorded on the stimulable phosphor sheet 1
0, an erasing unit 3o that erases image information remaining on the stimulable phosphor sheet after reading is completed; a first sheet storage unit 40 that can store a plurality of stimulable phosphor sheets that can be used for photographing; is equipped with two sets of storage members capable of storing a plurality of stimulable phosphor sheets, and each storage member has a first position for receiving the stimulable phosphor sheet for which imaging has been completed, and a position facing the image reading unit 20. A second sheet storage section 50 is movable to a second position where the stimulable phosphor sheet can be taken out, and a plurality of stimulable phosphor sheets that have been erased in the erasing section are stored therein. After the stimulable phosphor sheet taken out from the possible third sheet storage section 60 and the first sheet storage section 40 is conveyed to the image recording section 10, the first sheet is carried into the storage member at the first position. The sheet transport section 70 transports the stimulable phosphor sheet 1 taken out from the storage member at the second position to the image reading section 20. After being conveyed to the erasing section 30, the third
The second sheet transport section 80 transports the stimulable phosphor sheet taken out from the third sheet storage section to the first sheet storage section. The two sets of storage members, the first sheet storage section, the second sheet storage section, and the third sheet storage section are each capable of storing, for example, 15 stimulable phosphor sheets 1. . Further, in this device, the first
The second sheet storage sections 40, 50, the first sheet conveyance section 70, and a part of the sheet conveyance section 90 of m3 are placed on a support stand 3 that is moved within the apparatus by rollers 2, and a moving unit section The moving unit section 4 is movable between the right end position shown in FIG. 1(a) and the left end position shown in FIG. 1(b). Furthermore, this device is provided with a see-through means 101 consisting of a combination of an image intensifier (I■) tube and a TV left camera, etc., and this see-through means 101 is also movable together with the moving unit section 4. There is.

In the image recording section 10, high-speed photography is performed for the same subject twice, in which image information is recorded continuously in a short period of time on 15 stimulable phosphor sheets. First, fluoroscopy is performed using the fluoroscopy means 101 in order to accurately determine the timing to start the high-speed imaging. That is, the image recording section 1o of the present apparatus includes a radiation source 11 and an imaging table 12 on which a subject 5 is placed facing the radiation source 11. is shown in Figure 1(a)
As shown in FIG.
1. Note that before photographing is started, 15 stimulable phosphor sheets 1 each in a photographable state are collected in the first sheet storage section 4o and the third sheet storage section 60.

When the apparatus is set as shown in FIG. 1(a), the radiation source 11 irradiates the subject 5 with radiation.

The radiation that has passed through the subject 5 passes through the imaging table 12 and enters the fluoroscopic means 101, so that the fluoroscopic means 101 converts the radiation image information of the subject 5 into a visible image signal. This signal is transmitted to an image receiving device 102 such as a CRT via a line 103, and the radiation image information is reproduced as a visible image on this image receiving device 102. While viewing the monitor image reproduced on the image receiving device, the operator of this device takes a picture at a desired time. When photographing, the irradiation of radiation from the radiation source 11 is temporarily stopped, and the moving unit section 4 is moved to the left end position as shown in FIG. 1(b). At this left end position, the guide plate 71 of the first sheet conveying section 70 in the unit section faces the radiation source 11, and the stimulable phosphor sheet in the first sheet storage section 40 can be photographed. Become.

The first seat storage section 40 is a housing 4 having an open top surface.
The stimulable phosphor sheets 1 are stacked and held diagonally upward in the stimulable phosphor sheets 1.
It has a sheet take-out means 42 that takes out the sheets one by one and transfers them to a first sheet conveying section 70 arranged nearby. This sheet take-out means 42 moves up and down a protrusion 42a that supports the lower end of the stimulable phosphor sheet at the right end position among the accumulated stimulable phosphor sheets by rotating an endless belt member 42b. , housing 41
The lower ends of the inner stimulable phosphor sheets 1 are pushed up by the protrusions 42b in order from the right, and the upper ends are gripped by the first sheet conveying section 70. The stimulable phosphor sheet 1 passed to the first sheet conveying section 70 is conveyed in the direction of arrow A, and is held at the photographing position on the guide plate 71. In this state, the subject 5 on the photographing stand 12 is held. By activating the radiation source 11 through the stimulable phosphor sheet 1, radiation image information of the subject is recorded on the stimulable phosphor sheet 1. The stimulable phosphor sheet 1 that has been photographed is transferred to the first sheet transport section 70
The sheets are transported in the direction of arrow A2 and carried into the second sheet storage section 50. As mentioned above, the image recording section 10 continuously photographs 15 stimulable phosphor sheets at high speed, and the first sheet storage section 40
The stimulable phosphor sheets inside the box 2 are sequentially fed into the sheet storage section 50 of the box 2 within a short period of time.

The second sheet storage section 50 consists of a pair of support frames 51A and 51B that can support both ends of the stimulable phosphor sheet and hold the stimulable phosphor sheet inside, as shown in FIG. 2(a). A first storage member 51 and similar support frames 52A, 5
In the state shown in FIG. 1(b), the support frames 52A, 52B of the second storage member 52 are provided with a second storage member 52 made of 2B, as shown in FIG. 2(a). 1
The first storage member 51 is disposed at a first position outside the support frames 51A and 51B of the storage member 51 to receive the stimulable phosphor sheet 1 that has been photographed. Note that, for convenience, only the first storage member 51 is shown in FIG. 1(b). The stimulable phosphor sheets 1 that have been photographed are sequentially carried into the first storage member 51, and when the photographing of the 15 stimulable phosphor sheets is completed, the first storage member 5
As shown in FIG. 2(b), 15 stimulable phosphor sheets on which image information is recorded are stacked in 1. When the first high-speed photographing is completed in this way, the moving unit section 4
is moved to the above-mentioned right end position as shown in FIG. 1(C), and the above-mentioned fluoroscopy is performed again in order to determine the timing for performing the second high-speed photographing by the fluoroscopy means 101. Furthermore, while this fluoroscopy is being performed, preparations for the second continuous photographing are being made within the moving unit section 4, as will be explained below.

In the second seat storage section 50, each storage member 51.52 can be freely moved in the left and right direction in FIG. 1(c) by means of two endless belts 6.7.
A first storage member 5 that stores stimulable phosphor sheets 1
1 is moved rightward and placed on the endless belt 7 outside the moving unit section 4, as shown in FIG. 2(e). The endless belt 6.7 is constructed of a plurality of belt parts, as shown in FIG. 3, so that the first storage member 51 and the second storage member 52 can be separated and moved. There is. That is, the endless belt 6 includes a belt portion 6a that conveys a storage member placed on the inside (the first storage member 51 as an example in FIG. 3), and a belt portion 6a that conveys a storage member placed on the outside (in FIG. 3, the first storage member 51 is an example). As an example, the endless belt 7 is composed of a pair of belt parts 6b that transport the second storage member 52), and a belt part 7b that transports the storage member arranged on the inside, and a belt part 7b that transports the storage member arranged on the outside. It consists of a pair of belt parts 7c, each of which is driven independently.

As shown in FIG. 1(c), the first storage member 51 placed on the endless belt 7 as described above has its lower left end pushed up diagonally by the protrusion member 7a that protrudes upward from inside the endless belt 7. tilted in the direction As shown in FIG. 3, the endless belt 7b is provided with a slit 7d for vertically moving the projecting member 7a. Moreover, the endless belt 7 shown in FIG. 1(C)
This upper position allows the storage member 5 to send out the stimulable phosphor sheet inside toward the image reading section 20.
1 (52). On the other hand, as described above, when the first storage member 51 is moved onto the endless belt 7 (belt portion 7c) and tilted by the projection member 7a, the support frame 52A of the second storage member 52.

52B is moved inward so that the stimulable phosphor sheet can be held inside (see FIG. 2(d)).

At the same time, the stimulable phosphor sheets 1 in a photographable state are sequentially carried into the empty casing 41 of the first sheet storage section 40 from the third sheet storage section 60 .

The third seat storage section 60 has a housing 6 whose top surface is open.
The stimulable phosphor sheet 1 in a photographable state is stored in the stimulable phosphor sheet 1, and the stored stimulable phosphor sheet 1 is fed one by one and taken out from the third sheet conveyance section. A suction cup 62 is provided as a means for taking out the sheet to be delivered to the sheet 90. The third sheet conveying means 90 transports the stimulable phosphor sheet passed along the arrows B1 to B as shown in FIG. 1(c).
The housing 4 of the first sheet storage section 40 is transported in four directions.
I will carry it in sequentially. The above-mentioned second seat storage section 50
The separation of the two storage members 51 and 52 and the loading of the stimulable phosphor sheet into the first sheet storage section are completed while the fluoroscopy means 101 is performing fluoroscopy.

When it is determined by the above-mentioned fluoroscopy that the second high-speed imaging is to be performed, the moving unit section 4 moves again as shown in FIG. 1(d).
The camera is moved to the left end position shown in , and the second high-speed photographing is performed. At the same time, the stimulable phosphor sheets 1 are sequentially taken out from the storage member 51 disposed at the second position as described above.

That is, the suction cup 53 enters into the storage member 51 arranged at the second position, and this suction cup 53 takes out the stimulable phosphor sheets 1 one by one from the storage member 51 and places them in the vicinity. The sheet is transferred to the second sheet conveying section 80 located at. Second
The sheet conveyance unit 80 is a stimulable phosphor sheet with arrows 01 to 0C
It is conveyed in three directions and sent into the image reading section 20.

The image reading unit 20 scans the stimulable phosphor sheet 1 on which image information has been accumulated and recorded with an excitation light 21 such as a laser beam,
The stimulated luminescent light emitted from the sheet 1, which is excited by the scanning, is photoelectrically read by a photoelectric reading means 22 such as a photomultiplier to generate an electrical image signal for outputting a visible image. be. In the figure, 23 is an excitation light source;
24 is a light deflector such as a galvanometer mirror, and 25 is a light guide 22a of a photoelectric reading means that directs the stimulated luminescent light emitted from the stimulable phosphor sheet 1 (the light guide 22a totally reflects the stimulated luminescent light and converts it into a photo). This is a reflecting mirror that reflects the light toward a photodetector 22b such as a multiplier.

The stimulable phosphor sheet 1 carried into the image reading section 20 is
After being transported in the direction of arrow C4 by the second sheet transporting section 80, it is transported in the direction of arrow C5 by switchback,
The entire surface of the stimulable phosphor sheet is two-dimensionally scanned by the excitation light 21 that is deflected approximately perpendicularly to the conveyance direction to generate stimulated luminescence light, which is then transmitted to the light guide 2.
2a and is detected by a photodetector 22b. In the photodetector 22b, the stimulated luminescence light is converted into an electrical signal,
The obtained electric signal is sent to an image information processing circuit (not shown) to perform image processing.

In addition, when reading radiation image information, reading to obtain image signals for visible image output as explained above (main reading)
Prior to this, pre-reading is performed to read the outline of the radiation image information stored and recorded on the stimulable phosphor sheet, and based on the image information obtained by this pre-reading, the reading conditions etc. for performing the main reading are determined. However, a method of performing the main reading according to the reading conditions is known.

As a method for performing such pre-reading, for example, the stimulable phosphor sheet 1 is scanned using excitation light with an energy lower than that of the excitation light used for the above-mentioned main reading, and the stimulated luminescence light emitted by this scanning is Similarly, a method of reading by photoelectric reading means (for example, Japanese Patent Application Laid-Open No. 58-672
(see Publication No. 40), etc.

The image reading section according to the present invention may be a section that performs only main reading, as well as a section that performs both main reading and pre-reading. For example, the pre-reading may be performed while the stimulable phosphor sheet 1 is being transported in the direction of the arrow C4, and then the main reading may be performed while the stimulable phosphor sheet 1 is being transported backward in the direction of the arrow C5 using a switch. Note that this pre-reading may be performed only for the first one of the 15 stimulable phosphor sheets to be read continuously, and may be omitted for the other stimulable phosphor sheets.

Further, the optical members disposed in the image reading section are not limited to those described above; for example, a long photomultiplier is disposed along the main scanning line as a photoelectric reading means,
Detection of stimulated luminescence light may also be carried out (JP-A-62-1.
6666 etc.). In addition, instead of deflecting the excitation light and performing main scanning as described above, the excitation light is linearly irradiated in a direction perpendicular to the conveying direction of the stimulable phosphor sheet, and the stimulable light is emitted from the linear excitation light irradiation position. The emitted light may be read by a line sensor.

The stimulable phosphor sheet 1 whose image information has been read in the image reading section 20 as described above is transported toward the erasing section 30 by the second sheet transport section 80 .

The erasing unit 30 erases the stimulable phosphor sheet 1 after the reading is completed.
This is for erasing the radiation image information remaining in the stimulable phosphor (releasing the radiation energy remaining in the stimulable phosphor). That is, some of the radiation image information stored and recorded on the stimulable phosphor sheet 1 still remains on the stimulable phosphor sheet after being read, and in order to reuse the stimulable phosphor sheet 1, this information is removed. The remaining image information is erased in the erasing section 30. Erasing unit 30 in this embodiment
is provided with a light source 31 for erasing, such as a fluorescent lamp, tungsten lamp, sodium lamp, xenon lamp, iodine lamp, etc., and the stimulable phosphor sheet 1 is connected to the arrow C.
While being transported in six directions, the remaining radiation energy on the stimulable phosphor sheet is emitted by being irradiated with the erasing light m31. Note that the erasing method in the erasing section 30 may be any known method, and erasing may be performed using heating or a combination of light irradiation and heating.

The stimulable phosphor sheet 1, which has been erased in the erasing section 30, is transferred to the second sheet conveying section 80 by the arrow c7+.
The sheets are conveyed in the 08 direction and sent to the third sheet storage section 60. As described above, the casing 61 of the third sheet storage section 60, which is empty after the stimulable phosphor sheet 1 is sent to the first sheet storage section 40, is used to store the stimulable phosphor sheet sent from the erasing section 30. As shown in FIG. 1(d), the stimulable phosphor sheet is rotated around a support shaft 62 and tilted to the right in the figure, and the stimulable phosphor sheet that has been erased is stored inside this housing 61. will be carried in sequentially.

Since reading the image information in the image reading section 20 is relatively time-consuming, the image recording section 10 must be read before the reading of the 15 stimulable phosphor sheets in the first storage member 51 is completed. Then, the second high-speed shooting ends. When the photographing is completed, all of the photographed stimulable phosphor sheets 1 are stored in the second storage member 52, and in this state, the moving unit section 4 moves to the above-mentioned right end and stands by. When a predetermined period of time has passed and all of the stimulable phosphor sheets 1 in the first storage member 51 are sent to the image reading section 20 and the storage member 51 is empty, the support frame 5 of the first storage member 51 is removed.
1A and 51B are opened outward as shown in FIG. 2(e), then moved to the left by the endless belt 7 (see FIG. 1) and placed on the endless belt 6. At the same time, the second storage member 52 storing the photographed stimulable phosphor sheet is moved to the right and placed at the second position on the endless belt 7, and the stimulable phosphor sheet 1 inside is moved to the right. It becomes possible to sequentially send the images to the image reading section 20. The first storage member 51, which has been moved to the left as described above, is then moved to its support frame 51A,
51B is moved inward to become ready to receive the stimulable phosphor sheet. Additionally, all of the stimulable phosphor sheets provided for the first photo shoot were read.

When the erasing is completed and the sheets are carried into the third sheet storage section, the stimulable phosphor sheets in the erasing section are transferred to the first sheet from the third sheet storage section in preparation for photographing the next subject. They are sequentially sent to the storage section 40.

Further, the stimulable phosphor sheet is taken out from the second storage member 52 disposed at a second position on the endless belt 7 as soon as the image reading section 20 is empty and sent to the image reading section 20. Furthermore, when the reading and erasing of these stimulable phosphor sheets 1, which have been photographed for the second time after a predetermined period of time has passed, and these stimulable phosphor sheets 1 are sent to the third sheet storage section 60, the device is again shown in Figure 1(a)
It becomes possible to photograph the next subject as shown in FIG.

As described above, according to the apparatus of this embodiment, the image recording section, the image reading section, and the erasing section are integrally provided, and high-speed photography is performed in an apparatus in which a stimulable phosphor sheet is circulated within the apparatus. This eliminates the need to take a plurality of stimulable phosphor sheets into and out of the apparatus each time an image is taken, and it is possible to improve work efficiency. Furthermore, since this device is equipped with the first to third sheet storage sections described above, it has two supply zones and two storage zones for stimulable phosphor sheets for high-speed imaging. High-speed photography can be performed almost continuously.

Note that the guide plate 71 of the first sheet conveying section 70 and the endless belt above the guide plate 71 are made of a material that can be seen from below, and the see-through means 101 is disposed below the guide plate 71. If fluoroscopy is performed before the stimulable phosphor sheet is fed onto the guide plate 71, there is no need to move the fluoroscopy means, the first sheet storage section, the first sheet transport section, etc. Furthermore, it is not always necessary to perform fluoroscopy before each of the two high-speed radiographs, and it may be omitted before the second high-speed radiograph. In that case 2
The stimulable phosphor sheet used for the second high-speed shooting
When transporting sheets from the sheet storage section = 27 - to the first sheet storage section = 27 -, it is not necessary to return the moving unit section to the right end position as shown in Fig. 1(e). , a portion between the third sheet storage section and the first sheet storage section is formed to be expandable and retractable, and the stimulable phosphor sheet used for the second photographing is conveyed from the third sheet storage section. Sometimes, the transport path of the second sheet transport section may be extended, and the stimulable phosphor sheet may be carried into the first sheet storage section located at the left end position. Furthermore, the main purpose of the present invention is to provide an apparatus that can continuously perform high-speed imaging with good workability. The means need not necessarily be provided.

Further, the two storage members in the second seat storage section do not necessarily have to be composed of two support frames separated from each other, but are composed of an integrated housing, etc. It may be movable so as to take alternate positions.

(Effects of the Invention) As explained in detail above, according to the radiation image information recording/reading device of the present invention, two consecutive high-speed imaging operations can be performed without the need to insert and remove multiple stimulable phosphor sheets from the device. It can be done.

Therefore, by using this apparatus, it is possible to reduce the work of the photographer, shorten the time required for imaging, and perform angiography and the like in a satisfactory manner.

[Brief explanation of the drawing]

Figure 1 (a), (b), (c), (d) is
A schematic side view showing a radiation image recording and reading apparatus according to an embodiment of the present invention, FIGS. 2(a), (b), (c), (
d) and (e) are perspective views illustrating the movement of the second seat storage section, and FIG. 3 is a perspective view showing the structure of the endless belt in the second seat storage section. 1... Stimulable phosphor sheet 4... Moving unit section 5... Subject 10... Image recording section 2
0... Image reading section 30... Erasing section 40.
...First sheet storage section 50...Second sheet storage section 51...First storage member 52...Second storage member 60...Third sheet storage section 70... First sheet conveyance section 80...Second sheet conveyance section 90...Third sheet conveyance section 101...See-through means δO Fig. 2

Claims (2)

[Claims] (1) An image recording section that accumulates and records radiation image information on the stimulable phosphor sheet by irradiating the stimulable phosphor sheet with radiation having image information; the image recording section accumulates and records the radiation image information; an image reading unit that irradiates the stimulable phosphor sheet with excitation light to generate stimulated luminescence light and photoelectrically reads the stimulated luminescence light to obtain an image signal; an image reading unit that reads image information; an erasing unit that releases radiation energy remaining in the stimulable phosphor sheet after the stimulable phosphor sheet is removed; a plurality of stimulable phosphor sheets that can store and record the radiation image information; a first sheet storage section having a sheet take-out means for taking out sheets one by one; two sets of storage members each capable of storing a plurality of the stimulable phosphor sheets; a second sheet storage disposed at a first position for receiving the phosphor sheets and movable to a second position for carrying out the storage member receiving the stimulable phosphor sheets one by one toward the image reading section; a third sheet storage section that stores a plurality of stimulable phosphor sheets that have been erased in the erasing section and has a sheet take-out means for taking out the stored stimulable phosphor sheets one by one; the first sheet; a first sheet conveyance unit that transports the stimulable phosphor sheet taken out from the storage unit to the image recording unit and then carries it into the storage member located at the first position; After sending the stimulable phosphor sheet taken out from the storage member to the image reading section and the erasing section, a second sheet is transported into the third sheet storage section.
A radiation image information recording/reading device comprising: a sheet conveyance section; and a third sheet conveyance section that carries a stimulable phosphor sheet taken out from the third sheet storage section into the first sheet storage section. (2) The image recording unit includes a fluoroscopic means that receives radiation having image information and converts it into a visible image signal when the stimulable phosphor sheet is not placed at the imaging position. A radiation image information recording/reading device according to claim 1, characterized in that: