CN117651365A - Cyclotron system for technetium drug production - Google Patents
Cyclotron system for technetium drug production Download PDFInfo
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- CN117651365A CN117651365A CN202311737065.XA CN202311737065A CN117651365A CN 117651365 A CN117651365 A CN 117651365A CN 202311737065 A CN202311737065 A CN 202311737065A CN 117651365 A CN117651365 A CN 117651365A
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- technetium
- cyclotron
- drug production
- base
- water pump
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 239000003814 drug Substances 0.000 title claims abstract description 29
- 229940079593 drug Drugs 0.000 title claims abstract description 28
- 229910052713 technetium Inorganic materials 0.000 title claims abstract description 28
- GKLVYJBZJHMRIY-UHFFFAOYSA-N technetium atom Chemical compound [Tc] GKLVYJBZJHMRIY-UHFFFAOYSA-N 0.000 title claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000001816 cooling Methods 0.000 claims abstract description 23
- 230000006698 induction Effects 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005192 partition Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 12
- 229910052742 iron Inorganic materials 0.000 claims 6
- 238000007905 drug manufacturing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract 1
- 150000002500 ions Chemical class 0.000 description 19
- 230000003028 elevating effect Effects 0.000 description 7
- 239000002245 particle Substances 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002603 single-photon emission computed tomography Methods 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- GKLVYJBZJHMRIY-OUBTZVSYSA-N Technetium-99 Chemical compound [99Tc] GKLVYJBZJHMRIY-OUBTZVSYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002725 brachytherapy Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000003759 clinical diagnosis Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000002216 heart Anatomy 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229940044173 iodine-125 Drugs 0.000 description 1
- ZCYVEMRRCGMTRW-YPZZEJLDSA-N iodine-125 Chemical compound [125I] ZCYVEMRRCGMTRW-YPZZEJLDSA-N 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000002600 positron emission tomography Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229940056501 technetium 99m Drugs 0.000 description 1
Abstract
The invention discloses a cyclotron system for technetium drug production, which relates to the field of nuclide drug production equipment. The invention relates to a cyclotron system for technetium drug production, which is convenient for the separation of the top part of a device and a base and the maintenance by arranging a suspended ceiling; the water inside the cooling pipe can be quickly cooled by the condensing device, so that the cooling effect is improved.
Description
Technical Field
The invention relates to the field of nuclide drug production equipment, in particular to a cyclotron system for technetium drug production.
Background
With the development of nuclear medicine technology, medical isotopes play an increasingly important role in clinical diagnosis and treatment. On the one hand, nuclear molecular imaging techniques, typified by Positron Emission Tomography (PET) and Single Photon Emission Computed Tomography (SPECT), incorporate nuclear molecular imaging probes, which are widely used in fields of biology, medicine, etc. due to their high sensitivity, high specificity and high resolution. Such as technetium-99 m, is used for Single Photon Emission Computed Tomography (SPECT) imaging of heart, brain, kidney, etc. human organs. On the other hand, certain medical isotopes are used to treat certain specific diseases by radiation emitted by decay, such as iodine-125 for cancer brachytherapy and the like. According to the medium-long term development planning of medical isotopes, the medical isotopes in China will show explosive growth. The isotope cyclotron in the related art has larger volume and higher production cost.
In the prior art, the cyclotron system for technetium drug production cannot effectively dissipate internal heat during operation, equipment faults can be caused by overheat during long-time operation, and meanwhile, the equipment is heavier and inconvenient for a user to open for maintenance, so that the cyclotron system for technetium drug production is provided.
Disclosure of Invention
The invention mainly aims to provide a cyclotron system for technetium drug production, which can effectively solve the problems that the cyclotron system for technetium drug production in the background art cannot effectively dissipate internal heat during working, equipment failure is possibly caused by overheat during long-time working, and meanwhile, the equipment is heavy and inconvenient for a user to open for maintenance.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a technetium pharmaceutical production is with circular acceleration system, includes base, circular acceleration chamber, ion emitter, furred ceiling, water pump, radio frequency device, beam measuring device, the base includes base body and top cap, the top cap is installed in base body upper surface, circular acceleration chamber includes accelerating chamber body, lower yoke apron and last yoke apron, lower yoke apron sets up in base body inside, accelerating chamber body installs in lower yoke apron upper surface, a plurality of go up yoke apron and install in the top cap inside, ion emitter includes emitter body and support neck pipe, support neck pipe one end is connected in accelerating chamber body inside, surface mounting is in the support neck pipe other end under the emitter body, the furred ceiling includes furred ceiling body and elevating gear, a plurality of elevating gear installs in furred ceiling body lower surface, elevating gear lower surface is equipped with a plurality of telescopic column, telescopic column one end is connected in the top cap inside, the water pump body includes water pump body and condensing equipment, the water pump body installs in top cap upper surface, condensing equipment installs in water pump body surface, a water pump body surface mounting is including the body and a resonance cavity body, a measuring device and a measuring device are located in the surface mounting bracket, a measuring device is located in the surface measuring device, a measuring device is located to the surface measuring device.
Preferably, the base further comprises a support column and a reinforcing plate, one end of the support column is connected to the lower surface of the base body, the reinforcing plate is arranged at the other end of the support column, and the stability of the device is improved by arranging the support column to be matched with the reinforcing plate to strengthen the connection with the ground.
Preferably, the base further comprises a vacuum partition plate, a plurality of mounting grooves are formed in the upper surface of the base body, one surface of the vacuum partition plate is matched with the inside of each mounting groove, and the purpose that the closing device prevents air leakage during vacuumizing is achieved by the aid of the vacuum partition plate.
Preferably, the cyclotron cavity further comprises a lower magnetic induction coil and an upper magnetic induction coil, wherein the lower magnetic induction coil is arranged on the upper surface of the lower yoke cover plate, a plurality of upper magnetic induction coils are arranged on the lower surface of the upper yoke cover plate, and the purpose of providing cyclotron power by matching with the upper magnetic induction coil is achieved by arranging the lower magnetic induction coils.
Preferably, the ion emitter further comprises an ion source, the ion source is mounted on the upper surface of the emitter body, and the purpose of providing ions to be accelerated is achieved by arranging the ion source.
Preferably, the suspended ceiling further comprises a vacuum pump and a vacuum tube, the vacuum pump is mounted on the peripheral side face of the base body, one end of the vacuum tube is connected inside the vacuum pump, the other end of the vacuum tube is connected inside the base body, and the purpose that the vacuum pumping treatment inside the device meets working conditions is achieved by the aid of the vacuum pump.
Preferably, the water pump further comprises a cooling pipe, a plurality of cooling pipe periphery sides are arranged on the lower surface of the resonant cavity, one end of the cooling pipe is connected to the inside of the condensing device, and the purpose of cooling the radio frequency device is achieved by arranging the cooling pipe.
Preferably, the radio frequency device further comprises a tuning structure, wherein the tuning structure is arranged on the other surface of the radio frequency device body, and the purpose of tuning the resonant cavity is achieved through the device tuning structure.
Preferably, the radio frequency device further comprises a coupling component, the coupling component is arranged on the other surface of the radio frequency device body, and the purpose of feeding power into the resonant cavity is achieved through the device coupling component.
Preferably, the beam measuring device further comprises a stripping and leading-out device and a leading-out structure, wherein a plurality of stripping and leading-out devices are arranged on the peripheral side surface of the base body, one end of the leading-out structure is connected with the peripheral side surface of the accelerating cavity body, the other end of the leading-out structure is arranged inside the mounting groove, and the purpose of extracting and collecting target ions generated after bombardment is achieved through the stripping and leading-out device of the device.
The invention has the following beneficial effects:
1. the suspended ceiling is arranged, so that the top of the device is convenient to separate from the base and overhaul, and particularly, the lifting device is arranged below the suspended ceiling and is connected with the top cover, and the top cover is automatically lifted without manual operation when the device needs to be opened;
2. the condensing device is arranged to rapidly cool water in the cooling pipe, so that the cooling effect is improved, and particularly, the cooling pipe is further cooled by the condensing device before entering the device, so that a better cooling effect is achieved in the device.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a cyclotron system for technetium drug production of the present invention;
FIG. 2 is a front view of a cyclotron system for technetium drug production of the present invention;
FIG. 3 is a left side view of a cyclotron system for technetium drug production of the present invention;
FIG. 4 is a bottom view of a cyclotron system for technetium drug production in accordance with the present invention;
FIG. 5 is a cross-sectional view of a cyclotron system for technetium drug production of the present invention;
FIG. 6 is a cross-sectional view of a cyclotron system for technetium drug production of the present invention;
fig. 7 is a cross-sectional view of a cyclotron system for technetium drug production of the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
100. a base; 101. a support column; 102. a reinforcing plate; 103. a top cover; 104. a vacuum partition panel; 200. a cyclotron cavity; 201. a lower yoke cover plate; 202. an upper yoke cover plate; 203. a lower magnetic induction coil; 204. a magnetic induction coil is arranged; 300. an ion emitter; 301. supporting the neck; 302. an ion source; 400. suspended ceiling; 401. a lifting device; 402. a vacuum pump; 403. a vacuum tube; 500. a water pump; 501. a cooling tube; 502. a condensing device; 600. a radio frequency device; 601. a resonant cavity; 602. a tuning structure; 603. a coupling assembly; 700. a beam measuring device; 701. a mounting frame; 702. a target head; 703. stripping the extraction device; 704. and exporting the structure.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1-7, the present invention is a cyclotron system for technetium drug production, comprising a base 100, a cyclotron cavity 200, an ion emitter 300, a ceiling 400, a water pump 500, a radio frequency device 600, and a beam measuring device 700, wherein the base 100 comprises a base body and a top cover 103, the top cover 103 is mounted on the upper surface of the base body, the cyclotron cavity 200 comprises an accelerating cavity body, a lower yoke cover 201 and an upper yoke cover 202, the lower yoke cover 201 is disposed in the base body, the accelerating cavity body is mounted on the upper surface of the lower yoke cover 201, a plurality of upper yoke covers 202 are mounted in the top cover 103, the ion emitter 300 comprises an emitter body and a support neck 301, one end of the support neck 301 is connected in the accelerating cavity body, the lower surface of the emitter body is mounted on the other end of the support neck 301, the ceiling 400 comprises a ceiling body and a lifting device 401, A plurality of elevating gear 401 are installed in furred ceiling body lower surface, elevating gear 401 lower surface is equipped with a plurality of telescopic columns, telescopic column one end is connected in top cap 103 inside, water pump 500 includes water pump body and condensing equipment 502, the water pump body is installed in top cap 103 upper surface, condensing equipment 502 installs in a water pump body surface, radiofrequency device 600 includes radiofrequency device body and resonant cavity 601, a plurality of radiofrequency device body are installed in base body week side, a resonant cavity 601 surface is connected in a radiofrequency device body surface, beam survey device 700 includes beam survey device body, mounting bracket 701 and target 702, beam survey device body sets up and mounting bracket 701 upper surface, beam survey device body surface sets up in accelerating cavity body inside, target 702 installs in beam survey device body surface, beam survey device 700 has the convenient flexible target 702 of electric telescopic link to change specifically.
Referring to fig. 1, the base 100 further includes a supporting column 101 and a reinforcing plate 102, one end of the supporting column 101 is connected to the lower surface of the base body, the reinforcing plate 102 is disposed at the other end of the supporting column 101, and the stability of the device is improved by providing the supporting column 101 and matching with the reinforcing plate 102 to strengthen the connection with the ground.
Referring to fig. 6, the base 100 further includes a vacuum partition board 104, the upper surface of the base body is provided with a plurality of mounting grooves, a surface of the vacuum partition board 104 is adapted to the inside of the mounting grooves, and the purpose of preventing air leakage of the closing device during vacuumizing is achieved by arranging the vacuum partition board 104.
Referring to fig. 7, the cyclotron cavity 200 further includes a lower magnetic induction coil 203 and an upper magnetic induction coil 204, the lower magnetic induction coil 203 is disposed on the upper surface of the lower yoke cover 201, and the plurality of upper magnetic induction coils 204 are disposed on the lower surface of the upper yoke cover 202, so that the purpose of providing cyclotron power in cooperation with the upper magnetic induction coil 204 is achieved by disposing the lower magnetic induction coil 203.
Referring to fig. 2, the ion emitter 300 further includes an ion source 302, where the ion source 302 is mounted on the upper surface of the emitter body, and the purpose of providing ions to be accelerated is achieved by providing the ion source 302.
Referring to fig. 1 and 7, the suspended ceiling 400 further includes a vacuum pump 402 and a vacuum tube 403, the vacuum pump 402 is mounted on the peripheral side of the base body, one end of the vacuum tube 403 is connected inside the vacuum pump 402, and the other end of the vacuum tube 403 is connected inside the base body, so that the purpose of evacuating the inside of the device to meet the working condition is achieved by arranging the vacuum pump 402.
Referring to fig. 5 and 7, the water pump 500 further includes a cooling tube 501, the peripheral sides of the cooling tubes 501 are disposed on the lower surface of the resonant cavity 601, one end of the cooling tube 501 is connected to the inside of the condensing device 502, specifically, the cooling tube 501 is provided with a plurality of branch pipes on the lower surface of the resonant cavity 601 to achieve the effect of uniform heat dissipation, and the purpose of cooling the radio frequency device 600 is achieved by disposing the cooling tube 501.
Referring to fig. 2, the rf device 600 further includes a tuning structure 602, where the tuning structure 602 is mounted on another surface of the rf device body, and the purpose of tuning the resonant cavity 601 is achieved by the device tuning structure 602.
Referring to fig. 2, the rf device 600 further includes a coupling element 603, where the coupling element 603 is disposed on another surface of the rf device body, and the purpose of feeding power into the resonant cavity 601 is achieved by the coupling element 603.
Referring to fig. 1 and 6, the beam measuring device 700 further includes a stripping and extracting device 703 and a guiding structure 704, wherein the stripping and extracting devices 703 are mounted on the peripheral side of the base body, one end of the guiding structure 704 is connected to the peripheral side of the accelerating cavity body, the other end of the guiding structure 704 is disposed inside the mounting groove, specifically, the other surface of the vacuum partition plate 104 is adapted to the other end of the guiding structure 704 to ensure complete closure, and the purpose of extracting and collecting target ions generated after bombardment is achieved by stripping and extracting the extracting devices 703 by the device.
When personnel use, be fixed in ground with base 100 through support column 101 cooperation gusset plate 102, be fixed in ground with restraint survey device 700 through mounting bracket 701, install furred ceiling 400 in indoor top, lift and decline so that erection equipment through elevating gear 400 control top cap 103, need start vacuum pump 402 and carry out the evacuation to the device inside before equipment starts and handle, need pass through water pump 500 simultaneously and let in cooling water for cooling tube 501, can make the cooling water reduce temperature through condensing equipment 502 and improve the cooling effect, only need control elevating gear 400 lifting top cap 103 when equipment needs to be overhauld and maintain internal arrangement.
In operation of the apparatus, the ion emitter 300 ionizes the respective gas under the influence of a magnetic field and generates a particle beam, which is directed out by the central region to the accelerator region. The magnet system provides an isochronous magnetic field for the operation of the particle beam. The rf device 600 controls rf frequency, accelerating voltage, etc., so as to ensure that the particle beam accelerates according to a designed spiral orbit in a high-frequency magnetic field region, and the particle beam is led out of the cyclotron cavity 200 through the stripping and leading-out device 703, so as to bombard the target 702, thereby producing medical isotopes. During the beam movement, the beam measuring device 700 is responsible for measuring information such as its position, energy and intensity, so as to ensure that the quality of the extracted beam meets the requirements.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The utility model provides a technetium is cyclotron system for drug manufacturing, includes base (100), cyclotron chamber (200), ion emitter (300), furred ceiling (400), water pump (500), radiofrequency device (600) and beam measuring device (700), its characterized in that: the base (100) comprises a base body and a top cover (103), the top cover (103) is arranged on the upper surface of the base body, the cyclotron cavity (200) comprises an accelerating cavity body, a lower iron yoke cover plate (201) and an upper iron yoke cover plate (202), the lower iron yoke cover plate (201) is arranged inside the base body, the accelerating cavity body is arranged on the upper surface of the lower iron yoke cover plate (201), a plurality of upper iron yoke cover plates (202) are arranged inside the top cover (103), the ion emitter (300) comprises an emitter body and a supporting neck tube (301), one end of the supporting neck tube (301) is connected inside the accelerating cavity body, the lower surface of the emitter body is arranged at the other end of the supporting neck tube (301), the suspended ceiling (400) comprises a suspended ceiling body and a lifting device (401), a plurality of lifting devices (401) are arranged on the lower surface of the suspended ceiling body, one end of each lifting device is connected inside the upper iron yoke cover plate (201), the water pump (500) comprises a water pump body and a condensing device (103), one end of each water pump body is arranged on the upper surface of the water pump body (502) and the water pump body (502) is arranged on the surface of the base (601), the beam measuring device (700) comprises a beam measuring device body, a mounting frame (701) and a target head (702), wherein the beam measuring device body is arranged on the upper surface of the mounting frame (701), the beam measuring device body is arranged inside the accelerating cavity body, and the target head (702) is arranged on the surface of the beam measuring device body.
2. The cyclotron system for technetium drug production of claim 1, wherein: the base (100) further comprises a supporting column (101) and a reinforcing plate (102), one end of each supporting column (101) is connected to the lower surface of the base body, and the reinforcing plate (102) is arranged at the other end of each supporting column (101).
3. The cyclotron system for technetium drug production of claim 1, wherein: the base (100) further comprises a vacuum partition plate (104), a plurality of mounting grooves are formed in the upper surface of the base body, and one surface of the vacuum partition plate (104) is matched with the inside of each mounting groove.
4. The cyclotron system for technetium drug production of claim 1, wherein: the cyclotron cavity (200) further comprises a lower magnetic induction coil (203) and an upper magnetic induction coil (204), wherein the lower magnetic induction coil (203) is arranged on the upper surface of the lower yoke cover plate (201), and a plurality of upper magnetic induction coils (204) are arranged on the lower surface of the upper yoke cover plate (202).
5. The cyclotron system for technetium drug production of claim 1, wherein: the ion emitter (300) further includes an ion source (302), the ion source (302) being mounted to the emitter body upper surface.
6. The cyclotron system for technetium drug production of claim 1, wherein: the suspended ceiling (400) further comprises a vacuum pump (402) and a vacuum tube (403), wherein the vacuum pump (402) is arranged on the peripheral side face of the base body, one end of the vacuum tube (403) is connected inside the vacuum pump (402), and the other end of the vacuum tube (403) is connected inside the base body.
7. The cyclotron system for technetium drug production of claim 1, wherein: the water pump (500) further comprises a cooling pipe (501), a plurality of cooling pipes (501) are arranged on the lower surface of the resonant cavity (601) on the peripheral side face, and one end of each cooling pipe (501) is connected to the inside of the condensing device (502).
8. The cyclotron system for technetium drug production of claim 1, wherein: the radio frequency device (600) further comprises a tuning structure (602), wherein the tuning structure (602) is mounted on the other surface of the radio frequency device body.
9. The cyclotron system for technetium drug production of claim 1, wherein: the radio frequency device (600) further comprises a coupling component (603), and the coupling component (603) is arranged on the other surface of the radio frequency device body.
10. The cyclotron system for technetium drug production of claim 1, wherein: the beam measuring device (700) further comprises a stripping and leading-out device (703) and a leading-out structure (704), wherein a plurality of stripping and leading-out devices (703) are arranged on the peripheral side face of the base body, one end of each leading-out structure (704) is connected to the peripheral side face of the accelerating cavity body, and the other end of each leading-out structure (704) is arranged inside the corresponding mounting groove.
Priority Applications (1)
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CN202311737065.XA CN117651365A (en) | 2023-12-18 | 2023-12-18 | Cyclotron system for technetium drug production |
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CN202311737065.XA CN117651365A (en) | 2023-12-18 | 2023-12-18 | Cyclotron system for technetium drug production |
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CN117651365A true CN117651365A (en) | 2024-03-05 |
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CN202311737065.XA Pending CN117651365A (en) | 2023-12-18 | 2023-12-18 | Cyclotron system for technetium drug production |
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