Liu Lizhong, Prasad Satish C, Bassano Daniel A
Department of Radiation Oncology, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, New York 13210, USA.
Med Phys. 2004 Mar;31(3):477-83. doi: 10.1118/1.1644519.
Traditional treatment planning systems calculate dose distributions around 137Cs intracavitary sources by interpolating stored dose rate tables or by Sievert-type integrals. Some of the recently introduced planning systems, such as the Varian BrachyVision and Eclipse (Varian Medical Systems, Palo Alto, CA), have discontinued the use of tables and have implemented instead the AAPM TG-43 formalism as a brachytherapy dosimetry calculation algorithm. In this work we present the dosimetry parameters for 137Cs intracavitary sources as determined according to the TG-43 formalism. With the availability of the TG-43 parameters, the commissioning of a 137Cs source in any current brachytherapy planning system is a straightforward task for a clinical physicist.
传统的治疗计划系统通过对存储的剂量率表进行插值或通过西弗特型积分来计算137铯腔内放射源周围的剂量分布。一些最近推出的计划系统，如瓦里安近距离放疗可视化系统和Eclipse（瓦里安医疗系统公司，加利福尼亚州帕洛阿尔托），已不再使用表格，而是采用美国医学物理师协会（AAPM）TG-43形式主义作为近距离放疗剂量学计算算法。在这项工作中，我们展示了根据TG-43形式主义确定的137铯腔内放射源的剂量学参数。有了TG-43参数，对于临床物理师来说，在任何当前的近距离放疗计划系统中调试137铯源都是一项简单的任务。
