JP5626975B2 - Radiation exposure protection device - Google Patents

Description

  The present invention relates to a radiation exposure protection device that prevents or reduces exposure of a medical worker to radiation when a radioactive drug such as a positron-labeled drug is administered to a subject.

  Today, positron emission tomography called PET (Positron Emission Tomography) diagnosis is often used for cancer diagnosis. This diagnostic method utilizes the property that cancer cells are likely to consume glucose. A radiopharmaceutical that releases positrons similar to glucose, such as 18F-FDG, is administered to the subject, and the positrons and electrons are combined. Sometimes gamma rays emitted are detected to diagnose the location and size of cancer cells. At present, many devices for automatically administering a radiopharmaceutical are used for administration of a radiopharmaceutical used in PET diagnosis, and device development is actively carried out (for example, see Patent Document 1, Patent Document 2, Non-patent Document). 1).

  In general, an automatic radiopharmaceutical administration device stores a container in which a radiopharmaceutical is hermetically stored in a housing, sucks out a predetermined amount of the radiopharmaceutical using a dispensing nozzle, holds it in a predetermined container, and then injects it. Administer to subject via needle. The housing is provided with a radiation shield made of lead or the like, and the radiopharmaceutical or the like is housed in the radiation shield so that radiation can be prevented from being released to the outside from the radiopharmaceutical automatic administration device. ing. However, since the injection needle used for administration and the tube connecting the injection needle and the automatic radiopharmaceutical administration device are replaced for each subject, no means for shielding radiation is usually taken.

  When such an automatic radiopharmaceutical administration device is used, a screen that can shield radiation is usually installed between the radiopharmaceutical automatic administration device and a subject so as not to expose the medical staff (for example, non-radioactive agents). Patent Document 1). Such a partition is conventionally used as a radiation protection device and an X-ray protection partition (see, for example, Patent Document 3).

JP 2008-212201 A JP 2008-302092 A Registered Utility Model No. 3033001

http://www.universalgiken.jp/seihin/seihin-bougo.html

  With respect to a screen installed between a radiopharmaceutical automatic administration device and a subject used conventionally, problems relating to exposure and workability have been pointed out. While medical personnel are required to confirm the state of the subject or the absence of leakage of radiopharmaceuticals during administration of radiopharmaceuticals, the conventional screens do not fully consider this point. In order to confirm the state of the subject, it is necessary to look into the subject on the opposite side of the screen, and as a result, the subject is exposed. While medical personnel are on the side of the automatic radiopharmaceutical administration device during administration of the radiopharmaceutical, a means for shielding radiation is provided on the tube and injection needle connecting the radiopharmaceutical automatic administration device main body and the subject. Therefore, there is a risk of exposure to radiation emitted from this part. In addition, when a screen is installed between the radiopharmaceutical automatic administration device and the subject, the medical staff moves the subject to the subject on the opposite side of the screen and inserts the needle when inserting the needle into the subject. After that, it is necessary to return to the radiopharmaceutical automatic administration device side again. Thus, the conventional screen is an obstacle to the movement or work of medical staff. For these reasons, there is a need for a radiation exposure protection device that is less likely to be exposed to medical personnel and that is excellent in workability. It goes without saying that it is preferable to be able to manufacture this radiation exposure protection device at low cost.

  An object of the present invention is to provide a radiation exposure protection device that can be used when administering a radiopharmaceutical, can reduce the radiation exposure of a medical worker, has excellent workability, and is easy to use.

  The present invention according to claim 1 is a movable screen-type radiation exposure protection device used when a radiopharmaceutical is administered to a subject via a radiopharmaceutical administration device, wherein the subject sitting on a chair has an arm. A front panel that shields radiation provided with an opening for inserting the radiation, a side panel that shields radiation having an opening capable of operating the radiopharmaceutical administration device provided in accordance with the height of the radiopharmaceutical administration device, and In accordance with the position of the lower end of the opening provided in the front panel, a table for placing the subject's arm attached to the front and back of the front panel, and casters provided at the lower part of the front panel and the side panel Both the front panel and the side panel are transparent at least from the lower end of the opening, and the front panel and the side panel are arranged and connected in an L shape. It is radiation exposure protection device according to claim.

  According to a second aspect of the present invention, in the radiation exposure protection apparatus according to the first aspect, the front panel includes a radiation shielding plate having a transparent upper half surface and a radiation shielding plate having an opaque lower half surface. The opening is provided in a lower part of a radiation shielding plate to be covered, and the side panel is composed of a transparent radiation shielding plate in the upper part and an opaque radiation shielding plate in the other part, and the opening is formed in the lower part of the upper radiation shielding plate. Is provided.

The radiation exposure protection apparatus according to claim 1 or 2, wherein the radiation exposure protection apparatus according to claim 1 or 2 is such that when the subject facing the front panel faces the front side and the opposite side is the back side, The front panel and the side panel are arranged and connected so that the joint of the side panel is on the back side of the front panel.

  A fourth aspect of the present invention is the radiation exposure protection apparatus according to any one of the first to third aspects, wherein the radiation exposure protection device is further used by covering the arm of the subject who is administering the radiopharmaceutical from above. And an arm cover formed by the method described above.

The radiation exposure protection device according to any one of claims 1 to 4, wherein the subject of the front panel facing the subject is the front side and the opposite side is the back side. A radiation dose detector that is installed at the front center of the front panel and measures the radiation dose emitted from the body of the subject, and a radiation dose that is installed on the back side of the front panel and measured by the radiation dose detector is displayed. And a display device.

  The radiation exposure protection device of the present invention is a screen-type radiation exposure protection device capable of shielding radiation in which a front panel and a side panel are arranged in an L shape, and is thus released from a tube connecting a radiopharmaceutical administration device and a subject. It is possible to shield the emitted radiation with the side panel, and the radiation exposure of the medical staff can be further reduced as compared with the conventional screen. Also, the front panel is provided with an opening for the subject to insert the arm and a table for placing the arm, and since the upper part is transparent from the opening, the medical staff can move from the inside of the front panel without moving to the subject side. A needle can be inserted into the arm of the subject. Furthermore, the side panel is also provided with an opening for operating the radiopharmaceutical administration device, and since the upper part is transparent from the opening, the medical staff can move from the inside of the side panel without moving to the radiopharmaceutical administration device side. The radiopharmaceutical administration device can be operated. Moreover, since the upper part of a front panel is transparent, the medical worker can visually recognize a test subject's state or the mode of administration from the inside of a front panel. As described above, the radiation exposure protection apparatus of the present invention can be operated, operated or monitored inside the front panel and the side panel, so that radiation exposure can be further reduced, and workability is excellent and easy to use.

  According to the invention, the front panel is composed of a radiation shielding plate whose upper half surface is transparent and a radiation shielding plate whose lower half surface is opaque, and the opening is provided below the radiation shielding plate covering the upper half surface. The side panel consists of a transparent radiation shielding plate in the upper part and an opaque radiation shielding plate in the other part, and the opening is provided in the lower part of the upper radiation shielding plate, so that the panel can be manufactured easily and inexpensively. In addition, the transparent region is wide and has excellent visibility.

  Further, according to the present invention, since the front panel and the side panel are arranged so that the joint between the front panel and the side panel is on the back side of the front panel, the radiation emitted from the subject enters the inside of the front panel through the joint. Can be prevented. By arranging the front panel and the side panel in this way, the radiation exposure of the medical staff can be more reliably reduced.

  Further, according to the present invention, the radiation exposure protection apparatus of the present invention includes the arm cover that is used by covering the arm of the subject who is administering the radiopharmaceutical from above, so that the radiation exposure of the medical staff can be more reliably reduced. Can do. When the arm cover is used, the arm cover is formed of a transparent radiation shielding plate, so that the medical staff can easily visually recognize the leakage of the radiopharmaceutical and the dropping of the injection needle.

  Further, according to the present invention, the radiation dose detector for measuring the radiation dose emitted from the body of the subject is installed on the front side of the front panel, and the indicator is installed on the back side of the front panel. For this reason, the medical staff can easily confirm from the inside of the front panel that the radiopharmaceutical is contained in the body of the subject.

1 is a perspective view of a radiation exposure protection device 1 as an embodiment of the present invention. It is the front view and side view of the front panel 3 of the radiation exposure protection apparatus 1 of FIG. It is a fragmentary sectional view which shows the connection point of the radiation shielding board 13 and the radiation shielding board 15 of the front panel 3 of the radiation exposure protection apparatus 1 of FIG. It is the front view and side view of the side panel 5 of the radiation exposure protection apparatus 1 of FIG. It is a top view which shows the usage example of the radiation exposure protection apparatus 1 of FIG. It is a perspective view of the arm cover 80 which can be used with the radiation exposure protection apparatus 1 of FIG.

  FIG. 1 is a perspective view of a radiation exposure protection device 1 as an embodiment of the present invention, and FIG. 2 is a front view (a), a side view (b), and FIG. 3 of a front panel 3 of the radiation exposure protection device 1. Fig. 4 is a partial cross-sectional view showing a connection procedure between the radiation shielding plate 13 and the radiation shielding plate 15 of the front panel 3, and Fig. 4 is a front view (a) and a side view (b) of the side panel 5 of the radiation exposure protection device 1. FIG. 5 is a plan view showing an example of use of the radiation exposure protection apparatus 1.

  The radiation exposure protection device 1 is a movement in which two panels capable of shielding radiation are arranged in an L shape, which is used when a radiopharmaceutical such as a positron-labeled drug is administered to a subject 100 via the radiopharmaceutical administration device 200. Possible screen-type radiation exposure protection device.

  The radiation exposure protection device 1 includes a front panel 3 that the subject 100 faces, a side panel 5 that shields the radiopharmaceutical administration device 200, tables 7 and 9 on which the subject 100 puts an arm to which the radiopharmaceutical is administered, and the radiation exposure protection device 1. A caster 11 for moving the vehicle is included. Hereinafter, the surface of the front panel 3 on which the subject 100 faces is referred to as the front surface 31, the opposite surface is referred to as the back surface 32, the side where the subject 100 is present is referred to as the front side or the outside, and the side where the medical worker 110 is located is referred to as the back side or the inside. Similarly, the side of the side panel 5 on which the radiopharmaceutical administration device 200 is installed is the front surface 33, the opposite surface is the back surface 34, the side on which the radiopharmaceutical administration device 200 is installed is the front side or the outside, The side that is present is referred to as the back side or the inside.

  The front panel 3 is a vertically long rectangular panel, and is a panel for protecting the medical worker 110 from radiation exposure when a radiopharmaceutical is administered to the subject 100. The front panel 3 is formed by connecting two radiation shielding plates 13 and 15 arranged on the upper and lower sides via a connecting member 17 without a gap. The radiation shielding plate 13 covering the upper half surface indicates the state of the subject 100 in which the medical worker 110 inside the front panel 3 is outside the front panel 3 and the state of administration of the radiopharmaceutical while the subject 100 is administering the radiopharmaceutical. It is made of a transparent radiation shielding plate 13 so that it can be visually recognized, and an opening 19 is provided at the lower part for the subject 100 to put out the arm 104 inside the front panel 3. A cushion material 12 is attached to the upper end of the front panel 3.

  The height of the front panel 3 is a height obtained by adding a little to the height of the head 102 of the subject 100 in a state of sitting on the chair 130, and the horizontal width is a width obtained by adding a little to the shoulder width of the subject 100. Since the subject 100 is seated on the chair 130 during the administration of the radiopharmaceutical, the size of the front panel 3 is set in this way to shield the radiation emitted from the subject 100 who is administering the radiopharmaceutical. be able to. The casters 11 are attached to the lower end portions 43 and 45 on both side surfaces of the front panel 3, and the lower end of the front panel 3 is lifted by about 5 to 20 mm from the floor surface 55. It is decided in consideration of this. In this regard, the height of the side panel 5 and the installation height of the openings 19 and 20 are the same. Naturally, it is preferable that the front panel 3 is large from the viewpoint of protecting the medical staff 110 from radiation exposure, but even if it is unnecessarily large, the radiation shielding performance is not sufficiently high, which is uneconomical. Inconvenient to move and install. The thickness of the front panel 3 is appropriately determined according to the radiation shielding performance of the radiation shielding plates 13 and 15 so that the exposure dose of the medical staff 110 is a predetermined value or less.

  The radiation shielding plate 13 is a member that forms the upper half of the front panel 3. Specifically, the radiation shielding plate 13 has a size that can cover the upper body of the subject 100 sitting on the chair 130, and can cover the upper body of the subject 100. Are arranged as follows. Of course, the radiation shielding plate 13 has a predetermined radiation shielding performance, and during the administration of the radiopharmaceutical to the subject 100, a medical worker 110 inside the front panel 3 passes through the radiation shielding plate 13 to the outside of the front panel 3. It is necessary to be able to visually recognize the state of the subject 100 and the administration state of the radiopharmaceutical. For this reason, the radiation shielding plate 13 is not preferably a radiation shielding plate with insufficient transparency even though the radiation shielding performance is sufficiently high. As the radiation shielding plate 13 excellent in radiation shielding performance and transparency, a known lead-containing acrylic plate, lead-containing plastic plate, lead glass for radiation shielding, or the like can be used.

  A dome-shaped opening 19 is provided in the lower center of the radiation shielding plate 13. The opening 19 is for the subject 100 to push out the arm 104 for piercing the injection needle 202 for administering the radiopharmaceutical to the inside of the front panel 3. The opening 19 should not be unnecessarily large because it has no radiation shielding capability. On the other hand, a size that allows the arm 104 to be taken in and out without difficulty is necessary. For example, the size of the opening 19 is about 200 mm in height and 250 mm in width.

  The radiation shielding plate 15 is a member that forms the lower half surface of the front panel 3. Specifically, the radiation shielding plate 15 has a size that can cover the lower body of the subject 100 while sitting on the chair 130, and can cover the lower body of the subject 100. Are arranged as follows. The radiation shielding plate 15 has a structure in which a lead plate (not shown) is arranged at the center, and the lead plate is covered with stainless steel plates 21a and 21b from both sides. Unlike the upper radiation shielding plate 13, the radiation shielding plate 15 located in the lower portion does not need to be formed of a transparent member, may be a member having excellent radiation shielding properties, and more preferably inexpensive. The width and thickness of the radiation shielding plate 15 are the same as those of the upper radiation shielding plate 13 so that there is no step between the radiation shielding plate 13 and the radiation shielding plate 15. As a result, the connection between the upper radiation shielding plate 13 and the lower radiation shielding plate 15 by the connecting member 17 is facilitated, and measures for preventing radiation leakage from the coupling portion are also facilitated. It is also preferable in terms of design. The thicknesses of the lead plate and the stainless steel plates 21a and 21b constituting the radiation shielding plate 15 may be determined from the radiation shielding ability, and need not be increased more than necessary. When the lead plate and the stainless steel plates 21a and 21b are thin and the total thickness is smaller than the thickness of the radiation shielding plate 13, a space is provided between the lead plate and the stainless steel plates 21a and 21b. You may do it.

  The connecting member 17 is a member for firmly fixing and connecting the radiation shielding plate 13 and the radiation shielding plate 15 arranged above and below, and is made of stainless steel and has a U-shaped cross section. The width of the U-shaped groove of the connecting member 17 is provided approximately the same as the thickness of the radiation shielding plate 13 and the radiation shielding plate 15. A connecting member 17 is fitted into the end portions of both sides of the radiation shielding plate 13 and the radiation shielding plate 15, and bolts 23 attached so as to penetrate the connecting member 17, the radiation shielding plate 13 and the radiation shielding plate 15. The radiation shielding plate 13 and the radiation shielding plate 15 are integrally connected. By making the cross-sectional shape of the connecting member 17 U-shaped, the connecting member 17 and the radiation shielding plate 13 and the radiation shielding plate 15 can be firmly fixed, and further radiation leaks to the back side of the front panel 3. Can be prevented. As shown in FIG. 3, a thin sealing member 24 having a cross section of about 1 to 2 mm made of lead having an H shape is attached to the joint portion between the radiation shielding plate 13 and the radiation shielding plate 15. The leakage of radiation from the joint portion with the plate 15 is prevented. The method for connecting the radiation shielding plate 13 and the radiation shielding plate 15 is not limited to the method using the connecting member 17 and the seal member 24, and the radiation shielding plate 13 and the radiation shielding plate 15 can be used without leaking radiation. Other methods may be used as long as they can be firmly fixed and connected.

  The cushion material 12 is made of a sponge-like member, and when the subject 100 sits on the chair 130 or stands up from the chair 130, the head 102 or the body may be bumped against the front panel 3 to cause injury. It is provided to ensure safety.

  The tables 7 and 9 are tables for the subject 100 sitting on the chair 130 to place the arm 104 to which the radiopharmaceutical is administered, so that the surface 27 of the tables 7 and 9 coincides with the lower end 35 of the radiation shielding plate 13. , Fixed to the front panel 3 via a fixture 29. The table 7 fixed to the front surface 31 of the front panel 3 and the table 9 fixed to the back surface 32 of the front panel 3 are mounted horizontally at the same height. In the table 7, the subject 100 is curved in an arc shape so that the subject 100 can easily push out the arm 104. The size of the tables 7 and 9 only needs to be large enough to place the arm 104 provided by the subject 100 without difficulty. The mounting height of the tables 7 and 9 is set to a height at which the subject 100 sitting on the chair 130 can easily put the arm 104 to which the radiopharmaceutical is administered. The opening 19 provided in the radiation shielding plate 13 is provided with the lower end 35 of the radiation shielding plate 13 as a starting point. Therefore, when the subject 100 inserts the arm 104 into the opening 19, the opening 19 is naturally on the table 7 or 9. Can be put in. Thus, the mounting height of the radiation shielding plates 13 and 15 is determined from the installation positions of the tables 7 and 9.

  The side panel 5 is a panel for protecting the medical worker 110 from radiation emitted from the radiopharmaceutical administration device 200, particularly the tube 204, and similarly to the front panel 3, the two radiation shielding plates 14 arranged up and down. , 16 are connected via a connecting member 18 without gaps. The radiation shielding plate 14 that covers the upper part is a transparent radiation shielding plate for the medical worker 110 inside the side panel 5 to operate the radiopharmaceutical administration device 200 installed outside the side panel 5. The medical staff 110 is provided with an opening 20 for operating the radiopharmaceutical administration device 200 installed outside the side panel 5.

  The side panel 5 is connected to the front panel 3 via a connector 38 so as to be orthogonal to one side 37 of the front panel 3. At this time, the side panel 5 is disposed so as to contact the back surface 32 of the front panel 3. Therefore, the side panel 5 cannot be seen from the front side of the front panel 3. A thin sealing member made of lead and having a thickness of about several millimeters is attached to the joint 39 between the side panel 5 and the front panel 3. By arranging the side panel 5 and the front panel 3 as described above, radiation emitted from the subject 100 can be prevented from entering the inside of the front panel 3 through the joint 39 between the front panel 3 and the side panel 5. Thereby, the radiation exposure of the medical worker 110 can be reduced more reliably.

  The side panel 5 has a rectangular shape like the front panel 3 and has the same height as the front panel 3. The lateral width is preferably about 1.2 to 2 times the width of the radiopharmaceutical administration device 200. From the viewpoint of protecting the medical staff 110 from radiation exposure, it is preferable to be large, but even if it is unnecessarily large, the radiation shielding performance is not sufficiently high and it is uneconomical, and movement and installation are inconvenient. The thickness of the side panel 5 is appropriately determined according to the radiation shielding ability of the radiation shielding plates 14 and 16 so that the exposure dose of the medical staff 110 is not more than a predetermined value.

  The transparent radiation shielding plate 14 disposed at the top has a predetermined radiation shielding performance, and the radiopharmaceutical administration device 200 in which the medical worker 110 is installed from the inside of the side panel 5 to the outside of the side panel 5. In order to operate the operation panel (not shown), it is necessary for the radiation shielding plate 14 to allow the medical worker 110 to easily see the operation panel of the radiopharmaceutical administration device 200 through the radiation shielding plate 14. For this reason, the radiation shielding plate 14 is not preferably a radiation shielding plate with insufficient transparency even though the radiation shielding performance is sufficiently high. As the radiation shielding plate 14 having excellent radiation shielding performance and transparency, a known lead-containing acrylic plate, lead-containing plastic plate, lead glass for radiation shielding, or the like can be used, which is the same as the radiation shielding plate 13 of the front panel 3. A radiation shielding plate can be used.

  A rectangular opening 20 is provided at the lower center of the radiation shielding plate 14 starting from the lower end of the radiation shielding plate 14. The opening 20 is for the medical staff 110 to operate the operation panel of the radiopharmaceutical administration device 200 from the inside of the side panel 5, and the radiation shielding plate 14 is the lower end 41 of the opening 20, that is, radiation. The lower end of the shielding plate 14 is attached so as to be the same height as the radiopharmaceutical administration device 200. The opening 20 may be of a size that allows the operation panel of the radiopharmaceutical administration device 200 to be easily operated. On the other hand, the opening 20 should not be unnecessarily large because it has no radiation shielding ability. For example, the width of the opening 20 may be approximately the same as the width of the radiopharmaceutical administration device 200, and the height may be 200 to 300 mm.

  The radiation shielding plate 16 is a member that forms a lower portion from the center of the side panel 5 and has the same function and configuration as the radiation shielding plate 15 of the front panel 3. The radiation shielding plate 16 has a structure in which a lead plate is arranged in the center as in the radiation shielding plate 15 and this lead plate is covered with stainless steel plates 22a and 22b from both sides. The thickness of the plate can be reduced. This is because the radiopharmaceutical administration device 200 includes a radiation shielding plate inside and shields radiation emission from the radiopharmaceutical administration device 200 to the outside. The radiation shielding plate 16 is attached so that the height of the upper end portion is the same as the height of the radiopharmaceutical administration device 200. As a result, the height of the lower end portion 41 of the opening 20 provided in the radiation shielding plate 14 is the same as the height of the radiopharmaceutical administration device 200, so that the operation panel of the radiopharmaceutical administration device 200 can be easily operated.

  The fixing and connecting points between the radiation shielding plate 14 and the radiation shielding plate 16 are the same as those of the front panel 3.

  The casters 11 are provided at both side lower ends 43 and 45 of the front panel 3 and both side lower ends 47 and 49 of the side panel 5. A caster mounting base 51 is attached to the lower side surface 43 of the front panel 3 so as to be orthogonal to the front panel 3, and the casters 11 are attached to both ends of the caster mounting base 51. Similarly, the caster mounting base 53 is attached to the side surface lower end portion 47 of the side panel 5 so as to be orthogonal to the side panel 5, and the casters 11 are attached to both ends of the caster mounting base 53. One caster 11 is attached to each of the side surface lower end 45 of the front panel 3 and the side lower end 49 of the side panel 5. The caster 11 is a known caster that can rotate in any direction of 360 degrees. Since the front panel 3 and the side panel 5 are arranged so as to be orthogonal to each other, the caster mounting bases 51 and 53 provided on the front panel 3 and the side panel 5 are orthogonal to each other. For this reason, a universal caster that can rotate 360 degrees and can move in any direction is used so that the casters 11 do not interfere with the movement. As the caster 11, a known caster corresponding to the weight of the front panel 3 and the side panel 5 can be used, and a caster with a stopper is particularly preferable. If the arm 104 moves when the radiopharmaceutical is administered to the subject 100, the injection needle 202 may come off or the radiopharmaceutical may leak, so the tables 7, 9 on which the arm 104 is placed, that is, the radiation exposure protection device 1 does not move. It is preferable. For this reason, after installing the radiation exposure protection apparatus 1, it is preferable to lock the caster 11 so as not to move. Further, in order to prevent the radiation exposure protection device 1 from moving, an adjuster capable of adjusting the height is attached, and after the radiation exposure protection device 1 is installed, the caster 11 may not be grounded to the floor surface 55. Good.

  The radiation exposure protection apparatus 1 further includes a radiation dose measuring device for measuring the radiation dose emitted from the subject 100 in order to confirm that the radiopharmaceutical has entered the body of the subject 100. The radiation dose measuring apparatus includes a detector 57 for measuring the radiation dose emitted from the subject 100 and a display 59 for displaying the radiation dose. The detector 57 is fixed to the back surface of the table 7. 9 is placed on top. By providing the detector 57 and the indicator 59 in this manner, the medical worker 110 can confirm that the radiopharmaceutical has entered the body of the subject 100 without being exposed. The positions of the detector 57 and the display 59 are not limited to the positions shown in this embodiment. The detector 57 is a position close to the body of the subject 100 on the front side of the front panel 3, and the display 59 is the front. Any position may be used as long as the medical worker 110 can easily see the back side of the panel 3. As the radiation dose measuring device, a known radiation dose measuring device capable of measuring the radiation dose emitted from the subject 100 and capable of separating the detector 57 and the display 59 can be used. Instead of a fixed radiation dose measuring device, a portable radiation dose measuring device can also be used.

  The usage example of the radiation exposure protection apparatus 1 is shown. The radiopharmaceutical administration device 200 is installed outside the side panel 5 at a position where it can be easily operated from the opening 20 of the side panel 5. The subject 100 sits on the chair 130 so as to face the surface 31 of the front panel 3 and inserts one of the arms 104 into the opening 19 of the front panel 3. The medical worker 110 is located on the back side of the front panel 3 and pierces the injection needle 202 for administering the radiopharmaceutical into the arm 104 of the subject 100 inserted through the opening 19. At this time, the tube 204 connecting the radiopharmaceutical administration device 200 and the injection needle 202 passes through the front side of the front panel 3, and inserts the injection needle 202 into the back side of the front panel 3 from the opening 19. The medical worker 110 operates the radiopharmaceutical administration device 200 after puncturing the injection needle 202 and administers the radiopharmaceutical. During the administration of the radiopharmaceutical, the medical worker 110 sits on the chair 132 behind the front panel 3, visually confirms the administration state of the radiopharmaceutical, and checks the display 59. After the administration, the medical staff 110 removes the injection needle 202, and the subject 100 rests in a separate room. After the administration, the medical staff 110 turns to the front side of the side panel 5 and replaces the used tube 204 and the injection needle 202 with a new tube and injection needle.

  As described above, the medical staff 110 can operate the radiopharmaceutical administration device 200 inside the front panel 3 and the side panel 5 to observe the subject 100, so that radiation exposure is reduced. After the administration is completed, the medical worker 110 goes out to the front side of the side panel 5 and replaces the used tube 204 and the injection needle 202 with a new tube 204 and the injection needle 202. At this time, radiation is emitted. It is not exposed because it is not. Further, as described above, the medical worker 110 can operate the radiopharmaceutical administration device 200, insert the injection needle 202, and observe the subject 100 inside the front panel 3 and the side panel 5, and therefore needs to move almost. There is no workability.

  The radiation exposure protection device 1 preferably includes an arm cover 80 that covers the arm of the subject 100 who is administering the radiopharmaceutical. FIG. 6 shows a perspective view of the arm cover 80. The arm cover 80 includes an elongated rectangular parallelepiped box-shaped main body 82 and a handle 84 attached to the upper surface (top surface) of the main body 82. The main body 80 is open at the bottom and front, and the four surfaces excluding the bottom and front are made of a transparent radiation shielding plate. The radiation shielding plate can visually recognize the arm 104, the tube 204, and the injection needle 202 of the subject 100 covered with the arm cover 80, and is released from the arm 104, the tube 204, and the injection needle 202 of the subject who is administering the radiopharmaceutical. It has radiation shielding performance that can shield radiation. As such a radiation shielding plate, a known lead-containing acrylic plate, a lead-containing plastic plate, lead glass for radiation shielding, and the like can be used similarly to the radiation shielding plate 13 on the upper half of the front panel 3. The size of the arm cover 80 is a size that can cover the arm 104 protruding on the back side of the front panel 3 when the subject 100 inserts his arm into the opening 19 of the front panel 3. It is a size that can be closed. Using such an arm cover 80, the medical worker 110 covers the arm 104 of the subject 100 who is administering the radiopharmaceutical and closes the opening 19, so that the medical staff 110 radioactively reduces the exposure to the subject 100. It can be visually confirmed that the drug is being administered.

  As described above, the radiation exposure protection apparatus 1 according to the present invention uses a part of the front panel 3 as the transparent radioactive shielding plate 13, and the medical worker 110 performs the state of the subject 100 or the administration of the radiopharmaceutical from the inside of the front panel 3. One of the features is that can be visually recognized. The method of using a part of the front panel 3 as the transparent radioactive shielding plate 13 is not limited to the method described in the above embodiment, and the entire front panel 3 is a single metal radioactive shielding plate, and a window is provided in a part thereof. A transparent radioactive shielding plate 13 may be attached here. When the medical worker 110 visually recognizes the state of the subject 100 or the state of administration of the radiopharmaceutical from the inside of the front panel 3, the method shown in the above embodiment is considered in view of the fact that the more transparent radioactive shielding plate is visible. Is a preferred method. Moreover, the front panel 3 shown in the said embodiment is preferable also from the point which can be manufactured easily and cheaply. This also applies to the side panel 5.

  In addition, the radiation exposure protection apparatus 1 of the present invention is characterized in that the front panel 3 is provided with an opening 19 through which the subject 100 pushes out the arm 104 and the tables 7 and 9 are provided in accordance with the opening 19. Yes. The drilling procedure of the opening 19 is not limited to the procedure described in the above embodiment as long as the subject 100 can easily put out the arm 104, and is not limited to the procedure shown in the above embodiment, for example, the upper part of the metal radiation shielding plate 15 or transparent You may provide so that the radiation shielding board 13 and the metal radiation shielding board 15 may be straddled. However, from the viewpoint of ease of processing and visibility of the arm 104 inserted into the opening 19, it is preferable to provide the opening 19 at the lower portion of the transparent radiation shielding plate 13 as shown in the above embodiment. This also applies to the procedure for drilling the opening 20 of the side panel 5.

  A radiation exposure protection device 1 having the same shape as that shown in FIGS. 1 to 5 and having the following size was manufactured and used when a radiopharmaceutical was administered. The upper half of the radioactive shielding plate 13 is a lead-containing acrylic plate having a thickness of 70 mm, a width of 800 mm and a height of 650 mm, and the lower half of the radioactive shielding plate 15 is a lead plate having a thickness of 10 mm in the center and stainless steel on both sides. A front panel 3 having a thickness of 70 mm, a width of 800 mm, and a height of 700 mm is used, and these are arranged up and down to a height (including casters) of 1400 mm, a width of 800 mm, and a thickness of 70 mm. did. Similarly, a lead-containing acrylic plate having a thickness of 70 mm, a width of 800 mm, and a height of 500 mm is disposed on the upper radioactive shielding plate 14, and a lead plate having a thickness of 5 mm is disposed in the center on the lower radioactive shielding plate 16, and stainless steel is provided on both sides. A radiation shielding plate having a thickness of 70 mm, a width of 800 mm, and a height of 850 mm was used, and a side panel 5 having a height (including casters) of 1400 mm, a width of 800 mm, and a thickness of 70 mm was used. The opening 19 provided in the front panel 3 has a height of 200 mm and a width of 250 mm, and the opening 20 provided in the side panel 5 has a height of 250 mm and a width of 500 mm, which is the same as that of the radiopharmaceutical administration device 200.

  A radiopharmaceutical administration device 200 was installed outside the side panel 5 of the radiation exposure protection apparatus 1 in accordance with the position of the opening 20, and the radiopharmaceutical was administered to the subject 100 via the radiopharmaceutical administration device 200. At a plurality of medical institutions at this time, the exposure dose of about 30 medical workers was measured over a half year. Each medical worker administers radiopharmaceutical administration to 7 to 8 subjects 100 per day. The monthly exposure dose for one health care worker is calculated from a film batch, and is about 0.4 millisievert at the maximum. It was the following.

DESCRIPTION OF SYMBOLS 1 Radiation exposure protection apparatus 3 Front panel 5 Side panel 7, 9 Table 11 Caster 13 Radiation shielding board 14 Radiation shielding board 15 Radiation shielding board 16 Radiation shielding board 19 Opening part 20 Opening part 21a, 21b Stainless steel board 22a, 22b Stainless steel board 31 Front panel surface 32 Front panel back surface 33 Side panel surface 34 Side panel back surface 35 Lower end of radiation shielding plate 39 Joint between front panel and side panel 57 Detector 59 Display 80 Arm cover 100 Subject 104 Subject's arm 110 Medical staff 130 Chair 200 Radiopharmaceutical administration device 202 Injection needle 204 Tube

Claims (5)

A movable screen-type radiation exposure protection device for use in administering a radiopharmaceutical to a subject via a radiopharmaceutical administration device,
A front panel that shields radiation provided with an opening through which a subject sitting on a chair inserts an arm;
A side panel that shields radiation having an opening capable of operating the radiopharmaceutical administration device provided according to the height of the radiopharmaceutical administration device;
In accordance with the position of the lower end of the opening provided in the front panel, a table for placing the subject's arms attached to the front and back of the front panel;
A caster provided at a lower portion of the front panel and the side panel,
Both the front panel and the side panel are transparent at least from the lower end of the opening, and the front panel and the side panel are arranged and connected in an L shape. The front panel is composed of a radiation shielding plate whose upper half surface is transparent and a radiation shielding plate whose lower half surface is opaque, and the opening is provided below the radiation shielding plate covering the upper half surface,
2. The side panel according to claim 1, wherein the side panel includes a transparent radiation shielding plate in an upper portion and an opaque radiation shielding plate in the other portion, and the opening is provided in a lower portion of the upper radiation shielding plate. The radiation exposure protection device described. When the front side faces the subject in the front panel, the opposite side is the back side,
The radiation exposure protection according to claim 1 or 2, wherein the front panel and the side panel are arranged and connected so that a joint between the front panel and the side panel is located on the back side of the front panel. apparatus.   The radiation exposure protection according to any one of claims 1 to 3, further comprising an arm cover formed of a transparent radiation shielding plate, which is used by covering the arm of a subject who is administering a radiopharmaceutical from above. apparatus. When the front side faces the subject in the front panel, the opposite side is the back side,
Furthermore, a radiation dose detector that is installed in the front center part of the front panel and measures the radiation dose emitted from the body of the subject,
A display installed on the back side of the front panel and displaying the radiation dose measured by the radiation dose detector;
The radiation exposure protection apparatus according to claim 1, wherein the radiation exposure protection apparatus comprises:

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