Bonnett D E
Br J Radiol. 1983 Sep;56(669):665-72. doi: 10.1259/0007-1285-56-669-665.
The major hazards encountered by staff using neutrons for radiotherapy are discussed. Specific reference is made to the experience gained at the MRC Cyclotron Unit at the Western General Hospital, Edinburgh, using neutrons generated by the d(15 MeV) + Be reaction. The neutron therapy facility consists of a cyclotron and both a fixed horizontal and an isocentric therapy beam, and staff protection during five years' operation is reviewed. Levels of induced activity in the cyclotron and therapy equipment are reported and problems of radioactive contamination discussed. Summaries of whole-body and finger dose equivalents received by engineering staff, and of whole-body dose equivalents received by physics and radiography staff, are presented and analysed. It is shown that, although doses received by staff are higher than for staff in an X-ray facility, they are all well below the maximum permissible levels, and it is also concluded that radioactive contamination of staff is minimal.
讨论了放疗工作人员使用中子时遇到的主要危害。特别提及了爱丁堡西部总医院医学研究委员会回旋加速器装置利用d（15兆电子伏）+铍反应产生中子所获得的经验。中子治疗设施包括一台回旋加速器以及一个固定水平治疗束和一个等中心治疗束，并回顾了五年运行期间的工作人员防护情况。报告了回旋加速器和治疗设备中的感生放射性水平，并讨论了放射性污染问题。给出并分析了工程人员全身和手指剂量当量的汇总情况，以及物理和放射摄影人员全身剂量当量的汇总情况。结果表明，虽然工作人员所接受的剂量高于X射线设施中的工作人员，但均远低于最大允许水平，并且还得出结论，工作人员的放射性污染极小。
