Dosimetric characteristics of the CDC-type miniature cylindrical 137Cs brachytherapy sources

被引：14
作者：
Pérez-Calatayud, J
Ballester, F
Serrano-Andrés, MA
Lluch, JL
Puchades, V
Limami, Y
Casal, E
机构：
[1] La Fe Univ Hosp, Dept Radiat Oncol, Physiol Sect, E-46009 Valencia, Spain
[2] Univ Valencia, Dept Atom Mol & Nucl Phys, E-46100 Burjassot, Spain
[3] Inst Fis Corpuscular, IFIC, E-46100 Burjassot, Spain
[4] Ctr Nacl Dosimetria, E-46009 Valencia, Spain
来源：
MEDICAL PHYSICS | 2002年 / 29卷 / 04期
关键词：
Cs-137; dosimetry; brachytherapy; Monte Carlo simulations; treatment planning systems; intracavitary sources;
D O I：
10.1118/1.1461844
中图分类号：
R8 [特种医学]; R445 [影像诊断学];
学科分类号：
1002 ; 100207 ; 1009 ;
摘要：
The low dose rate CDC-type miniature cylindrical (CS)-C-137 sources are available, with one or three active beads. for use in source trains in automatic and manual afterloading systems for gynecological brachytherapy. Absolute dose rate distributions in water have been calculated around these sources using the Monte Carlo GEANT3 code and they are presented as conventional two-dimensional Cartesian lookup tables. The AAPM Task Group 43 Formalism for dose calculation has been also applied. The dose rate constant obtained for the one bead source is Lambda = 1.113+/-0.003cGyh(-1) U-1, and the value for the three bead source is Lambda = 1.103+/-0.003cGyh(-1) U-1. Finally, for the treatment planning systems based on Sievert-type algorithms, the attenuation coefficients that best reproduce Monte Carlo dose rate distribution are given. (C) 2002 American Association of Physicists in Medicine.
引用
收藏
页码：538 / 543
页数：6
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