Yudelev M, Maughan R L, Dunlap K
Gershenson Radiation Oncology Center, Harper Hospital, Detroit, MI 48201, USA.
Health Phys. 1995 Jul;69(1):130-6. doi: 10.1097/00004032-199507000-00015.
Prior to routine operation of the neutron therapy unit a radiation survey was performed in order to confirm the shielding design and to assure the safety of the personnel involved in the operation of the unit. The shielding requirements were calculated in accordance with NCRP Report No. 51. The contributions of the neutron and gamma dose equivalents have been measured separately outside the treatment room. The exposure outside the shield is negligible. In general, the measured values were lower than those derived from the shielding calculations. The highest total dose equivalents were registered at locations corresponding to the highest calculated values.
在中子治疗装置常规运行之前，进行了一次辐射测量，以确认屏蔽设计并确保参与该装置运行的人员的安全。屏蔽要求是根据美国国家辐射防护与测量委员会第51号报告计算的。已分别在治疗室外测量了中子和γ剂量当量的贡献。屏蔽外的照射可以忽略不计。一般来说，测量值低于屏蔽计算得出的值。在与计算出的最高值相对应的位置记录到了最高的总剂量当量。
