Kramer Gary H, Hauck Barry M
Human Monitoring Laboratory, Radiation Protection Bureau, 775 Brookfield Road PL6302D1, Ottawa, Ontario, K1A 1C1, Canada.
Health Phys. 2006 Feb;90(2):161-6. doi: 10.1097/01.hp.0000176672.86806.89.
Previously, this laboratory conceptualized a new phantom for calibration or performance testing of whole body counters using Monte Carlo simulations. This paper describes the physical reality that was created from the Monte Carlo design project and compares its counting efficiency to that of a conventional BOMAB phantom using two whole body counters. In one counter (NaI based) the agreement between the two phantoms was +/-8% and in the second counter (Ge based) the agreement was +/-5% at all the energies measured (126 keV, 661 keV, 1172 keV, 1330 keV). The advantage of the sliced phantom is that the sources are solid, sealed, and cannot leak activity thereby simplifying packing for shipment if the phantom is classified as a Dangerous Good. The new phantom is, therefore, ideal for uses that involve shipment, such as an intercomparison exercise. The phantom is also re-usable as the sources can be changed.
此前，本实验室利用蒙特卡罗模拟为全身计数器的校准或性能测试构思了一种新的体模。本文描述了由蒙特卡罗设计项目所构建的物理实体，并使用两台全身计数器将其计数效率与传统BOMAB体模的计数效率进行了比较。在一台计数器（基于碘化钠）中，两种体模之间的一致性在所有测量能量（126 keV、661 keV、1172 keV、1330 keV）下为±8%，在第二台计数器（基于锗）中，一致性为±5%。切片体模的优点在于源是固态、密封的，不会泄漏放射性，因此如果体模被归类为危险物品，可简化运输包装。因此，这种新体模非常适合涉及运输的用途，比如比对试验。由于源可以更换，该体模还可重复使用。
