| Cheng Jinsheng,Li Mingsheng,Shi Bin,Zhang Shufeng,Liu Yuntao,Song Mingzhe,Zhang Zizhu,Chen Jun.Analysis of neutron beam quality control test items in boron neutron capture therapy (BNCT) equipment[J].Chinese Journal of Radiological Medicine and Protection,2023,43(8):614-619 |
| Analysis of neutron beam quality control test items in boron neutron capture therapy (BNCT) equipment |
| Received:November 08, 2022 |
| DOI：10.3760/cma.j.cn112271-20221108-00438 |
| KeyWords:Boron neutron capture therapy In-hospital neutron irradiator Quality control test |
| FundProject: |
| Author Name | Affiliation | E-mail | | Cheng Jinsheng | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Li Mingsheng | Key Laboratory of Radiological Protection and Nuclear Emergency, China CDC, National Institute for Radiological Protection, Chinese Center for Disease Control and Prevention, Beijing 100088, China | | | Shi Bin | Department of Nuclear Technology and Application, China Institute of Atomic Energy, Beijing 102413, China
National Key Laboratory for Metrology and Calibration Techniques, China Institute of Atomic Energy, Beijing 102413, China | shibin@ciae.ac.cn | | Zhang Shufeng | Department of Nuclear Technology and Application, China Institute of Atomic Energy, Beijing 102413, China
National Key Laboratory for Metrology and Calibration Techniques, China Institute of Atomic Energy, Beijing 102413, China | | | Liu Yuntao | Department of Nuclear Technology and Application, China Institute of Atomic Energy, Beijing 102413, China | | | Song Mingzhe | Department of Nuclear Technology and Application, China Institute of Atomic Energy, Beijing 102413, China | | | Zhang Zizhu | Beijing Capture Technology Co., Ltd, Beijing 102413, China | | | Chen Jun | Department of Nuclear Technology and Application, China Institute of Atomic Energy, Beijing 102413, China
National Key Laboratory for Metrology and Calibration Techniques, China Institute of Atomic Energy, Beijing 102413, China | |
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| Abstract:: |
| Objective To provide reference for establishing the testing method for quality control of neutron beam in boron neutron capture therapy (BNCT) equipment in China by testing the radiation characteristic parameters and dosimetry characteristic parameters of epithermal neutron beam in hospital neutron irradiator (IHNI).Methods By comparing the uncertainties in the result of various test items with the deviation values recommended by the European Joint Research Center (EC-JRC), the feasibility of the relevant of testing method was analyzed and evaluated.Results The uncertainty in epithermal neutron fluence rate was 2.7%. The uncertainty in ratio of thermal to epithermal neutron fluence rate was 3.1%. The uncertainty in ratio of fast neutron air kerma to epithermal neutron fluence rate was 9.3%. The uncertainty in ratio of gamma air kerma to epithermal neutron fluence rate was 8.7%. The uncertainty in spatial distribution of neutron fluence rate was 2.7%. The uncertainty in thermal neutron fluence rate in phantom was 1.8%. The uncertainty in neutron and gamma-ray dose rate in phantom was 17.1% and 4.0%, respectively.Conclusions The uncertainty in neutron dose rate measurement result in phantom is higher, and further research is needed to improve the accuracy of the testing method. The uncertainty in the measurement result of other test items is lower, and the accuracy of the test result is expected to meet the allowable deviation value recommended by the European Joint Research Center, and the test method is feasible. |
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