Electron dosimetry based on the absorbed dose to water concept:: A comparison of the AAPM TG-51 and DIN 6800-2 protocols

被引：10
|
作者：
Dohm, OS
Christ, G
Nüsslin, F
Schüle, E
Bruggmoser, G
机构：
[1] Univ Tubingen, Klin Radioonkol, Abt Med Phys, D-72076 Tubingen, Germany
[2] PTW Freiburg, D-79115 Freiburg, Germany
[3] Univ Freiburg Klinikum, Abt Strahlentherapie, D-79106 Freiburg, Germany
来源：
MEDICAL PHYSICS | 2001年 / 28卷 / 11期
关键词：
electron dosimetry; absorbed dose to water; Roos chamber; perturbation correction;
D O I：
10.1118/1.1414008
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 dosimetry protocols DIN 6800-2 and AAPM TG-51, both based on the absorbed dose to water concept, are compared in their theoretical background and in their application to electron dosimetry. The agreement and disagreement in correction factors and energy parameters used in both protocols will be shown and discussed. Measurements with three different types of ionization chambers were performed and evaluated according to both protocols. As a result the perturbation correction factor P-wall(60Co) for the Roos chamber was determined to 1.024 +/- 0.5%. (C) 2001 American Association of Physicists in Medicine.
引用
收藏
页码：2258 / 2264
页数：7
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