JP5588635B2 - Radiation irradiation equipment - Google Patents

Description

  The present invention relates to a radiation irradiating apparatus that irradiates radiation including X-rays or γ rays to a blood bag or the like that encloses blood for transfusion, and more particularly to a technique for correcting a radiation dose depending on the thickness of a blood bag.

  There is a side effect due to blood transfusion called GVHD (Graft Versus Host Disease) after blood transfusion. In order to prevent this, a technique for inactivating lymphocytes in a blood product for blood transfusion by irradiating with radiation is known, and γ rays using radioisotope 137Cs (cesium) are used as the used radiation. And X-rays.

  There exists a radiation irradiation apparatus of patent document 1 as a radiation irradiation apparatus which performs the radiation irradiation of the blood product for blood transfusion. The radiation irradiation apparatus described in Patent Document 1 includes a sensor that detects the thickness of a tray in which blood is stored, and is configured to irradiate a predetermined dose of radiation based on the detected thickness of the tray. .

JP 2007-132723 A

  However, when multiple radiation irradiation devices are installed in the same facility, the blood bag that has been irradiated with radiation is reset to another radiation irradiation device by mistake. The inconvenience of being exposed to radiation has been pointed out.

  The present invention has been made in view of these disadvantages, and an object of the present invention is to provide an operator even when a plurality of radiation irradiation apparatuses are installed in a radiation irradiation apparatus installation room in the same facility. Is to provide a radiation irradiation apparatus capable of preventing the double irradiation by resetting the tray to another radiation irradiation apparatus by mistake.

  Other objects of the present invention will become apparent from the description of the entire specification.

In order to solve the above-described problems, a radiation irradiation apparatus according to the present invention includes a tray in which an object to be irradiated is mounted, a radiation irradiation unit that irradiates the irradiation object in the tray, and radiation irradiation of the radiation irradiation unit. A tray mounting unit that is installed in a direction and on which the tray is mounted, a reading unit that reads an identification mark that identifies the tray attached to the tray, a detection unit that detects the thickness of the tray, and a radiation irradiation unit A control unit for controlling the irradiation of the information, and the information corresponding to the identification mark includes information on the number of times of irradiation of the internal irradiation object and thickness information of the tray, and the control unit , if the irradiation times of the radiation obtained from the radiation count information read by said reading means is 1 or more, and, the tray read by the reading means And viewed information, if there is a mismatch value of said detected tray thickness by the detection unit, configured to control so as not irradiated from the irradiation unit.

  According to the present invention, even when a plurality of radiation irradiation devices are installed in the radiation irradiation device installation room in the same facility, the operator erroneously resets the tray to another radiation irradiation device, Double irradiation can be prevented.

It is a figure for demonstrating schematic structure of the radiation irradiation apparatus of embodiment of this invention. It is a figure for demonstrating schematic structure of the tray with a barcode in the radiation irradiation apparatus of embodiment of this invention. It is a figure for demonstrating the magnitude | size of the tray with a barcode in the radiation irradiation apparatus of embodiment of this invention. It is a figure for demonstrating the block structure of the tray identification function part in the radiation irradiation apparatus of embodiment of this invention. It is a figure for demonstrating the operation | movement flow of the tray identification function part in the radiation irradiation apparatus of embodiment of this invention. It is a figure for demonstrating the block configuration of the tray identification function part in the radiation irradiation apparatus of other embodiment of this invention.

  Hereinafter, an example of an embodiment to which the present invention is applied will be described with reference to the drawings. However, in the following description, the same components are denoted by the same reference numerals, and repeated description is omitted.

  FIG. 1 is a diagram for explaining a schematic configuration of a radiation irradiation apparatus according to an embodiment of the present invention, and in particular, a radiation irradiation apparatus in which the present invention is applied to a two-way irradiation apparatus. However, the configuration of the main body of the bi-directional irradiation apparatus of the present embodiment is the same as that of the known bi-directional irradiation apparatus except for the bar code reader 14 and the control device 6 and the operation panel 8 related to the control of the bar code reader 14. It is the same composition. Therefore, in the following description, the barcode reader 14, the control device 6, the operation panel 8, and the barcode-attached tray 13 to which the barcode is attached will be described in detail.

  As is clear from FIG. 1, the bidirectional irradiation apparatus 100 of this embodiment stores a tray 13 with a barcode in which a transfusion blood product or the like (an irradiated object) that is an object to be irradiated with X-rays is housed (stored). In order to prevent X-rays from leaking out from the irradiation chamber 1b, the region irradiated with the X-ray beam is covered with a shielding body (shown by a thick line) 1a formed of lead or the like. The tray portion (tray placement portion) 10 for carrying in and out the tray 13 with the barcode is also covered with the shielding body 1a, and the protective box 1 is formed so as to cover the outside of the shielding body 1a. Yes.

  In the region covered with the shielding body 1a, the upper X-ray tube device 2 and the lower X-ray for irradiating X-rays from above and below the tray 13 with barcodes in which transfusion blood products and the like are housed (stored). The pipe device 3 is arranged.

  An X-ray filter 11 is disposed between the irradiation chamber 1b in which the bar-coded tray 13 is stored and the upper X-ray tube apparatus 2, and an upper X-ray beam indicated by a one-dot chain line irradiated from the upper X-ray tube apparatus 2 2a is irradiated from the upper surface side of the tray 13 with a barcode through the X-ray filter 11. Similarly, an X-ray filter 12 is disposed between the irradiation chamber 1 b and the lower X-ray tube device 3, and the lower X-ray beam bundle 3 a indicated by a one-dot chain line irradiated from the lower X-ray tube device 3 is the X-ray filter 12. It is the structure which irradiates to tray 13 with a barcode via.

  The upper X-ray tube device 2 is connected to an upper high-voltage generator 4a for supplying a high voltage necessary for generating X-rays, and the lower X-ray tube device 3 is connected to a lower high-voltage generator 4b. The upper high voltage generator 4a and the lower high voltage generator 4b form the high voltage generator 4.

  The upper X-ray tube device 2 and the lower X-ray tube device 3 have a cooling device 5 for supplying (circulating) cooling oil for cooling the anode (not shown), and it was warmed by cooling of the anode. The cooling oil is cooled by cooling water supplied from a circulating cooling device (or tap water) 9.

  On the other hand, in the irradiation chamber 1b, a dosimeter probe 7a for measuring the X-ray dose irradiated on the tray 13 with a barcode is arranged. Based on the detection output from the dosimeter probe 7a, the dosimeter 7 is configured to measure the X-ray dose irradiated to the barcode-added tray 13 and output it to the control device 6. A probe filter 20 for adjusting the X-ray dose incident on the dosimeter probe 7a is disposed in the irradiation chamber 1b. The probe filter 20 corresponding to the bar code tray 13 is selected under the control of the control device 6, and the selected probe filter 20 is arranged on the measurement surface of the dosimeter probe 7a by a filter driving unit (not shown). It becomes the composition which is done.

  Furthermore, it is configured to include a barcode reader (reading means) 14 for reading barcode information from the barcode-added tray 13 which is a characteristic configuration of the present invention, and the barcode reader 14 reads the barcode information. Information is output to the control device 6. The control device 6 of the bi-directional radiation apparatus according to the present embodiment controls the X-ray dose from the upper and lower X-ray tube devices 2 and 3 by the control of the high-voltage generator 4 based on the X-ray dose information from the dosimeter 7 and the cooling device. In addition to the control of 5 and the control of the circulating cooling device 9, the barcode reader 14 is also controlled. In addition, the control device 6 is configured to have, as a database, barcode information such as thickness information of the tray 13 with barcode, machine table information of the two-way irradiation device, and facility name information.

  Furthermore, the control device 6 is configured to perform setting and message display for correcting the dose to be irradiated and the thickness of the barcode-added tray 13 on the operation panel (touch panel) 8.

  FIG. 2 is a diagram for explaining a schematic configuration of a tray with a barcode in the radiation irradiation apparatus according to the embodiment of the present invention. In particular, FIG. 2 (a) is a plan view (top view) of the tray with a barcode. 2 (b) is a front view of the tray with a barcode, and FIG. 2 (c) is a side view of the tray with the barcode. However, the tray 13 with a barcode according to the present embodiment has a configuration having a known barcode, and the size corresponds to the size of the blood bag 17 which is a container for a transfusion blood product or the like that is an irradiated object. The configuration other than the depth formed is the same as that of the conventional tray. Therefore, in the following description, the size of the barcode and the tray will be described in detail.

  As shown in FIGS. 2A to 2C, the barcode-equipped tray 13 in the radiation irradiation apparatus of the present embodiment includes a container portion (first housing) 13b and an upper lid portion (second housing) 13a. Consists of The container part 13b is a main body of the tray 13 with a barcode, and has a configuration in which the upper surface side is opened. The upper lid portion 13a is fitted to the upper surface side, which is the opening portion of the container portion 13b, and is configured to be locked to the container portion 13b by two locking mechanisms 16a and 16b formed on the peripheral edge portion of the opening portion. .

  As shown in FIG. 2B, the tray 13 with barcode according to the present embodiment is configured such that the second barcode 25a is attached to the side wall surface of the container portion 13b. Moreover, as shown to Fig.2 (a), it becomes the structure by which the 1st barcode 25 is affixed also on the upper surface of the upper cover part 13a. However, in the present embodiment, the first and second barcodes 25 and 25a are configured to have the same barcode attached thereto.

  As described above, in the tray 13 with barcode according to the present embodiment, the barcodes 25 and 25a are configured to be attached to the upper lid portion 13a and the container portion 13b of the tray 13 with barcode, In consideration of the case where the upper lid portion 13a and the container portion 13b are replaced with the upper lid portion or the container portion of another two-way irradiation device, the upper lid portion 13a and the container portion 13b are attached to each other.

  However, in this embodiment, the barcodes 25 and 25a are affixed to the upper lid 13a and the container portion 13b, which are components of the tray 13 with barcode, but may be directly printed on the upper lid portion 13a and the container portion 13b. In this case, the barcodes 25 and 25a use a label material or ink that has very little X-ray absorption, or is attached to a portion that is directly irradiated with radiation so that radiation irradiation to the blood bag 17 is not hindered. It is necessary to avoid printing.

  Next, FIG. 3 shows a view for explaining the size (depth) of the bar code tray in the radiation irradiation apparatus according to the embodiment of the present invention. Hereinafter, the size of the bar code tray is shown in FIG. The relationship between (depth) and the thickness of the blood bag will be described.

  As shown in FIGS. 3A and 3B, the tray 13 with a barcode according to this embodiment includes two types of trays having different depths. In the present embodiment, the two types of trays with barcodes 13 are different only in the shape of the container portion 13b in the depth direction, and the shapes of the other portions and the shape of the upper lid portion 13a are the same. However, the barcode 25 affixed to the upper lid part 13a and the barcode 25a affixed to the container part 13b correspond to the size of the container part 13b.

  The tray 13 with a barcode shown in FIG. 3A is a tray 13 with a barcode including a container portion 13b having a depth L1 in which the capacity of the blood bag 17 corresponds to 400 cc, for example. In the tray 13 with the barcode, when the 400 cc blood bag 17 is placed in the container portion 13b, the corresponding upper lid portion 13a is fitted and the upper lid portion 13a is locked by the locking mechanisms 16a and 16b. A depth L1 is in contact with a part of the portion and the back side of the upper lid portion 13a. For this reason, when the operator (examiner) tries to put the blood bag 17 with a capacity of 200 cc into the tray 13 with a barcode corresponding to the blood bag 17 with a capacity of 400 cc, the depth relative to the depth L1 of the container portion 13b. The thickness of the blood bag 17 will be greatly different. For this reason, an operator (inspector) can be alerted. Alternatively, a blood bag 17 having a small capacity of 200 cc can be placed in the tray 13 with a barcode for a capacity of 400 cc, and irradiation with the same radiation dose as that of the blood bag 17 having a capacity of 400 cc can be performed. In this case, the radiation dose is larger than that for the blood bag 17 having a capacity of 200 cc, but this does not cause a problem. In addition, when the blood bag 17 having a capacity of 400 cc is irradiated with radiation at a filling amount that does not reach a specified amount such as 300 cc, the operator (examiner) is provided with a barcode corresponding to the blood bag 17 having a capacity of 400 cc. It is possible to perform radiation irradiation using the tray 13.

  On the other hand, the barcode-equipped tray 13 shown in FIG. 3B is a barcode-equipped tray 13 including a container portion 13b having a depth L2 in which the capacity of the blood bag 17 corresponds to 200 cc, for example. In the tray 13 with the barcode, when the 200 cc blood bag 17 is placed in the container portion 13b, the corresponding upper lid portion 13a is fitted and the upper lid portion 13a is locked by the locking mechanisms 16a and 16b. The depth L2 is such that a part of the portion comes into contact with the back side of the upper lid portion 13a. For this reason, when the operator (examiner) tries to put the blood bag 17 with a capacity of 400 cc into the tray 13 with barcode corresponding to the blood bag 17 with a capacity of 200 cc, the blood bag 17 protrudes greatly from the container portion 13 b. In addition, it becomes impossible to operate the lock mechanisms 16a and 16b. Accordingly, it is possible to prevent the blood bag 17 having a large capacity of 400 cc from being erroneously put into the tray 13 with the barcode for the capacity of 200 cc.

  As described above, the barcode-equipped tray 13 of the present embodiment is configured to have a depth corresponding to the thickness of the blood bag 17 whose size can be grasped in advance. When storing in the barcode-added tray 13, it becomes possible to easily select the barcode-attached tray 13 corresponding to the blood bag capacity. As a result, the thickness of the blood bag 17 can be grasped by referring to the thickness information corresponding to the barcodes 25 and 25a attached to the tray 13 with barcode.

  In the general blood bag 17, the size of the blood bag 17 shown in FIG. 2A is the same in the vertical direction (up and down direction in the drawing) and in the horizontal direction (left and right direction in the drawing) regardless of the capacity. The case of size is common. Accordingly, two blood bags 17 having a capacity of 200 cc can be stacked and placed in the tray 13 with the bar code having the depth L1. In this case, since the radiation dose is the same as when one blood bag 17 having a capacity of 400 cc is placed, the present invention can be applied.

  Next, FIG. 4 is a diagram for explaining a block configuration of the tray identification function unit in the radiation irradiation apparatus according to the embodiment of the present invention. FIG. 5 is an operation of the tray identification function unit in the radiation irradiation apparatus according to the embodiment of the present invention. The figure for demonstrating a flow is shown, and the identification operation | movement of the tray in the radiation irradiation apparatus of this embodiment is demonstrated below based on FIG.4 and FIG.5.

  As shown in FIG. 4, the barcode reader 14 reads the barcodes 25 and 25 a attached to the upper lid portion 13 a and the container portion 13 b of the tray 13 with barcode. Information on the upper lid portion 13a and information on the container portion 13b are transmitted into the CPU module 6a via the input module 6b of the control device 6 (sequencer portion). As shown in FIG. 5, when the information of the upper lid portion 13a and the information of the container portion 13b are transmitted as tray information (step 30), the tray information is bidirectionally registered in the database 23 by the CPU module 6a. The machine table information, tray thickness information, facility information, and the like are collated (step 31).

  As a result of the collation, if it is recognized that the tray 13 with the barcode corresponds to the bidirectional irradiation apparatus 100 of the present embodiment, the CPU module 6a irradiates from the operation panel 8 via the operation panel control module 6d. An operation screen related to radiation irradiation of the two-way irradiation apparatus including setting of conditions is displayed and can be operated (step 32). At this time, based on the thickness information of the tray 13 with barcode, that is, the thickness information of the blood bag, the CPU module 6a controls the filter driving unit via the output module 6c and automatically corrects the thickness of the dosimeter probe 7. Do. Thereby, an operator's misconfiguration can be prevented.

  Subsequently, the tray is set (step 33). In order to set the tray 13 with the barcode at this time, the tray unit 10 is first carried out to the carry-out position 10a in FIG. Next, after setting the tray 13 with the barcode on the tray unit 10, the tray unit 10 is carried into the irradiation chamber 10 b by the carry-in switch of the operation panel 8.

  After carrying in, a radiation irradiation switch (not shown) on the operation panel 8 becomes effective, and when the operator operates the radiation irradiation switch, irradiation irradiation starts (step 34), and the irradiation dose is the thickness information of the tray 13 with the barcode. When a predetermined dose corresponding to is reached, radiation irradiation is stopped and irradiation is completed (step 35).

  In the comparison with the database 23 in step 31 described above, when it is identified that the tray 13 is not the barcode-added tray 13 of the bi-directional irradiation apparatus 100 of the present embodiment, the barcode is sent from the CPU module 6a via the operation panel control module 6d. It is displayed on the operation panel 8 that the attached tray 13 is not the one of the two-way irradiation device 100, and the operator is informed that the irradiation condition cannot be set (step 36).

  By the operation described above, it is possible to prevent the blood bag irradiated with another two-way irradiation apparatus from being irradiated twice. Further, the barcode-added tray 13 of the bi-directional irradiation apparatus 100 of the present embodiment is operated as a confirmation when the same barcode information is continuously input for the possibility of erroneous double irradiation. This can be avoided by displaying a message on the panel 8 as to whether it is double irradiation or notifying the operator.

  As described above, in the radiation irradiation apparatus according to the embodiment of the present invention, the depth corresponding to the thickness of the blood bag (200 cc type and 400 cc type) that is an object to be irradiated has two types of sizes having L1 and L2. In this configuration, a plurality of barcode-attached trays are provided. At this time, in order to distinguish the plurality of trays with barcodes and to distinguish the sizes of blood bags that can be stored, that is, the sizes of trays with barcodes having different radiation doses, the upper lids of the respective trays with barcodes A bar code, which is an identification mark provided with a different number for each tray, is attached to the container and the container.

  On the other hand, a bar code reader for reading a bar code is arranged in the main body of the radiation irradiation apparatus of the present embodiment. Furthermore, it has a configuration in which a database for storing information on radiation irradiation devices that can be used for a tray with a barcode corresponding to the barcode information, thickness information on a tray with a barcode (blood bag), and facility information is stored. Yes. With this configuration, the radiation dose to be irradiated is selected based on the read barcode information, and the blood stored in the tray with the barcode set is not set or the tray of another radiation irradiation device is not set. Since it is configured to check whether radiation has been irradiated to the back once, even if multiple radiation irradiation devices are installed in the radiation irradiation device installation room in the same facility, the operator This prevents accidental resetting of the tray to another radiation irradiation device and double irradiation.

  In the radiation irradiation apparatus according to the present embodiment, when the barcode reader 14 is disposed outside the apparatus main body and the tray 13 with barcode is set on the tray unit 10, the operator uses the bird reader 14 to The barcodes 25 and 25a of the corded tray 13 are configured to be read. However, the present invention is not limited to this. For example, a barcode reader 14 is disposed inside the radiation irradiating apparatus 100 and the bar from the operation panel 8 is used. The barcodes 25 and 25a may be read based on an instruction to store the tray with code. With this configuration, it is possible to obtain a special effect that the burden on the operator can be further reduced.

  In the radiation apparatus according to the present embodiment, the barcode is used as the identification mark of the tray 13 with the barcode. However, the identification mark is not limited to the barcode. A two-dimensional code such as a stack type in which a plurality of one-dimensional barcodes such as a code are vertically stacked may be used as an identification mark.

  Furthermore, in the radiation irradiation apparatus of the present embodiment, two types of trays with barcodes having different sizes (depths) differ only in the shape of the container in the depth direction, and the shapes of other parts and the upper lid However, the shape is not limited to this, and it is possible to change the depth by changing the mounting position of the lock mechanism or changing the shape in the vertical or horizontal direction for each container portion having a different depth. Thus, it is possible to easily determine the upper lid portion corresponding to the container.

  Furthermore, in the radiation irradiation apparatus of the present embodiment, the size (depth) of the barcoded tray is specified only based on the barcode information attached to the barcoded tray. For example, a means to confirm the size information of the tray with the barcode obtained from the barcode information is provided, and irradiation can be performed only when the confirmation result and the barcode information are compared and matched. By doing so, it is possible to obtain a special effect that the burden on the operator can be further reduced, and to obtain an effect that the reliability of radiation irradiation can be further improved.

  FIG. 6 is a diagram for explaining a block configuration of a tray identification function unit in a radiation irradiating apparatus according to another embodiment of the present invention. The radiation irradiating apparatus shown in FIG. 6 is a means for confirming the size of a tray with a barcode. The thickness sensor 15 is provided. However, the structure other than the structure that compares the thickness information obtained from the thickness sensor 15 and the thickness sensor 15 with the thickness information obtained from the barcode information is the same as the radiation irradiation apparatus shown in FIG. Therefore, in the following description, only the thickness sensor 15 and its comparison control will be described in detail.

  In the radiation irradiation apparatus of another embodiment shown in FIG. 6, the thickness sensor 15 is arranged in the tray portion, and the thickness information obtained by the thickness sensor 15 is input to the CPU module via the input module 6b. Is done. As the thickness sensor 15 shown in FIG. 6, for example, two known sensors each composed of a pair of light-emitting elements and light-receiving elements are used, and one sensor pair is disposed at a height of L2 or less from the bottom surface of the tray portion. Are arranged at a height of L2 or more and L1 or less from the bottom surface of the tray portion. By arranging the sensor pair at such a position, when a tray with a barcode having a depth of L2 is set in the tray portion, only the output of one sensor pair arranged at the height L2 changes. . In addition, when a tray with a bar code having a depth of L1 is set, the outputs of both sensor pairs arranged at the height L1 and the height L2 change. Can be determined.

  Therefore, in the radiation irradiation apparatus of another embodiment shown in FIG. 6, first, the thickness information of the tray with the barcode obtained based on the barcode information input from the barcode reader 14 and the thickness obtained from the thickness sensor 15. The CPU module 6a compares the information with each other to determine the size of the bar code tray set in the tray section. Next, when the determination result is the same result, it becomes step 34 mentioned above, and irradiation of a radiation is performed. On the other hand, if the determination results are different, an operation is performed in which the thickness information of the tray with the barcode obtained based on the barcode information and the thickness information obtained from the thickness sensor 15 do not match in the same manner as in step 36 described above. Display on the panel 8 to inform the operator that the irradiation conditions cannot be set. As a result, it is possible to obtain a special effect that the burden on the operator can be further reduced, and to obtain an effect that the reliability of radiation irradiation can be further improved.

  As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment of the invention. However, the invention is not limited to the embodiment of the invention, and various modifications can be made without departing from the scope of the invention. Of course, it can be changed.

DESCRIPTION OF SYMBOLS 1 ... Protective box, 1a ... Shielding body, 1b ... Irradiation chamber 2 ... Upper X-ray tube device, 2a ... Upper X-ray bundle, 3 ... Lower X-ray tube device 3a ..Lower X-ray beam bundles, 4 ... high voltage generation units 4a, 4b ... high voltage generation devices, 5 ... cooling devices, 6 ... control devices 7 ... dosimeters, 7a ... Dosimeter probe, 8 ... Control panel (touch panel)
DESCRIPTION OF SYMBOLS 9 ... Circulation type cooling device or tap water, 10 ... Tray part 10a ... Tray part carrying-out state, 11, 12 ... X-ray filter 13 ... Tray with barcode, 13a ... Top cover Part 13b ... container part 14 ... bar code reader, 15 ... thickness sensors 16a and 16b ... lock mechanism, 17 ... blood bag 20 ... filter drive part, 25, 25a ... ·barcode

Claims (4)

A tray including a first casing having one surface opened to house the object to be irradiated, and a second casing mating with the first casing to block the opening; and the object to be irradiated mounted on the tray. A radiation irradiating unit for irradiating radiation, a tray mounting unit for mounting the tray installed in the radiation irradiating direction of the radiation irradiating unit, and a reading means for reading an identification mark for identifying the tray attached to the tray And a radiation irradiation apparatus comprising: a detecting unit that detects a thickness of the tray when the tray is mounted on the tray mounting unit; and a control unit that controls irradiation from the radiation irradiation unit,
The information corresponding to the identification mark has radiation number-of-times information of the interior irradiation object, and thickness information of the tray,
When the number of times of irradiation of the radiation acquired from the number of times of irradiation of radiation read by the reading unit is 1 or more, or the thickness information of the tray read by the reading unit, A radiation irradiation apparatus, wherein when there is a discrepancy in the value of the thickness of the tray detected by the detection means, control is performed so that irradiation from the radiation irradiation unit is not performed.   The radiation irradiation apparatus according to claim 1, wherein the control unit controls a radiation dose from the radiation irradiation unit based on thickness information of the tray.   The information corresponding to the identification mark includes radiation irradiation apparatus information and / or facility information, and the control unit controls irradiation from the radiation irradiation unit using the information of the radiation irradiation apparatus and / or facility information. The radiation irradiation apparatus according to claim 1, wherein:   4. The radiation irradiation apparatus according to claim 1, wherein the radiation irradiation unit is disposed at a position facing each other across the tray mounting unit. 5.

Images