与临床全身活体中子活化分析相关的中子均匀性研究。

Neutron uniformity studies related to clinical total body in vivo neutron activation analysis.

作者信息

Elliott A, Holloway I, Boddy K, Haywood J K, Williams D

出版信息

Phys Med Biol. 1978 Mar;23(2):269-81. doi: 10.1088/0031-9155/23/2/005.

Abstract

Methods of assessing the uniformity of thermal and fast neutron fluence in relation to total body in vivo neutron activation analysis are described. Results are presented for 14 MeV neutrons emitted by sealed tube generators housed in a massive concrete shield, representing a substantial source of neutrons degraded in energy. Optimisation of conditions for patient irradiations is discussed and it is shown that acceptable uniformity of fluence can be achieved with little or no premoderation of the incident neutrons.

摘要

描述了在体内中子活化分析中评估热中子和快中子通量相对于全身均匀性的方法。给出了由置于厚重混凝土屏蔽中的密封管发生器发射的14 MeV中子的结果，该发生器是能量退化的大量中子的一个重要来源。讨论了患者辐照条件的优化，结果表明，在几乎不进行或不进行入射中子预慢化的情况下，就可以实现可接受的通量均匀性。