M-19高剂量率铱-192近距离放射治疗源的蒙特卡罗特性描述

Monte Carlo characterization of the M-19 high dose rate Iridium-192 brachytherapy source.

作者信息

Medich David C, Munro John J

机构信息

Radiation Laboratory, University of Massachusetts Lowell, 1 University Avenue, Lowell, Massachusetts 01854, USA.

出版信息

Med Phys. 2007 Jun;34(6):1999-2006. doi: 10.1118/1.2733809.

DOI:10.1118/1.2733809

PMID:17654903

Abstract

The MCNP5 Monte Carlo code was used to simulate the dosimetry of an M-19 iridium-192 high dose rate brachytherapy source in both air/vacuum and water environments with the in-air photon spectrum filtered to remove low-energy photons below delta=10 keV. Dosimetric data was organized into an away-along table and was used to derive the updated AAPM Task Group Report No. 43 (TG-43U1) parameters including S(K), D(r, theta), lamda, gL(r), F(r, theta), phi an(r), and phi an, and their respective statistical uncertainties.

摘要

使用MCNP5蒙特卡罗代码，在空气/真空中以及水环境中模拟M-19铱-192高剂量率近距离放射治疗源的剂量测定，其中空气中的光子能谱经过滤波以去除低于δ=10 keV的低能光子。剂量测定数据被整理成一个距离-角度表，并用于推导更新后的美国医学物理学家协会第43任务组报告（TG-43U1）参数，包括S(K)、D(r, θ)、λ、gL(r)、F(r, θ)、φan(r)和φan，以及它们各自的统计不确定度。