Plus和12i型伽马美PDR 192铱源的剂量学特性。

Dosimetry characteristics of the Plus and 12i Gammamed PDR 192Ir sources.

作者信息

Pérez-Calatayud J, Ballester F, Serrano-Andrés M A, Puchades V, Lluch J L, Limami Y, Casal F

机构信息

Physics Section, Radiation Oncology Department, La Fe University Hospital, Valencia, Spain.

出版信息

Med Phys. 2001 Dec;28(12):2576-85. doi: 10.1118/1.1418725.

DOI:10.1118/1.1418725

PMID:11797963

Abstract

In this study a complete set of dosimetric data for the Plus and 12i Gammamed PDR (pulsed dose rate) 192Ir sources is presented. These data have been calculated using the Monte Carlo simulation code GEANT3. Absolute dose rate distributions in water around these sources were calculated and are presented in form of conventional two dimensional (2D) Cartesian look-up tables. All dosimetric quantities recommended by the AAPM Task Group 43 report have been also calculated. These quantities are dose rate constant, radial dose function, anisotropy function and anisotropy factor. The dose rate distribution of the 12i source was compared with the corresponding data for the microselectron PDR source showing large differences between both sources.

摘要

在本研究中，给出了Plus和12i型伽马德脉冲剂量率（PDR）192Ir源的全套剂量学数据。这些数据是使用蒙特卡罗模拟代码GEANT3计算得出的。计算了这些源周围水中的绝对剂量率分布，并以传统二维（2D）笛卡尔查找表的形式呈现。美国医学物理学家协会（AAPM）任务组43报告推荐的所有剂量学量也已计算出来。这些量包括剂量率常数、径向剂量函数、各向异性函数和各向异性因子。将12i源的剂量率分布与微选择电子PDR源的相应数据进行了比较，结果表明两个源之间存在很大差异。