Dosimetric accuracy of the ITP™ inverse treatment planning system

被引：8
|
作者：
Olch, AJ [1 ]
机构：
[1] Childrens Hosp Los Angeles, Radiat Oncol Program, Los Angeles, CA 90027 USA
来源：
MEDICAL PHYSICS | 2002年 / 29卷 / 11期
关键词：
Intensity Modulated Radiation Therapy; inverse treatment planning; dosimetry;
D O I：
10.1118/1.1513162
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 dosimetric accuracy of the ITP(TM) system for intensity modulated radiation therapy was determined for 19 patient plans. Treatments were given with a Varian 2100C and a 120-leaf multileaf collimator using step and shoot delivery. Both absolute dose, determined by an ionization chamber, and relative dose, determined by film, were assessed. It was found that absolute dose agreement was within 0.1% +/- 1.5%, isodoses in the high dose-low gradient region were within 1.7% +/- 2%, and the distance to agreement for isodoses between 20% and 90% was 1.4 mm +/- 1mm. This agreement is at least as good as that found for standard wedged fields in most treatment planning systems. (C) 2002 American Association of Physicists in Medicine.
引用
收藏
页码：2484 / 2488
页数：5
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