Impact of different Ir-192 source models on dose calculations in high-dose-rate brachytherapy

被引：3

作者：

Otani, Yuki ^{[1
,2
]}

Shimamoto, Shigetoshi ^{[3
]}

Sumida, Iori ^{[2
]}

Takahashi, Yutaka ^{[2
]}

Tani, Shoji ^{[3
]}

Oshima, Tetsuya ^{[3
]}

Onosaka, Satoshi ^{[3
]}

Isohashi, Fumiaki ^{[2
]}

Tamari, Keisuke ^{[2
]}

Ogawa, Kazuhiko ^{[2
]}

机构：

[1] Kaizuka City Hosp, Dept Radiol, Osaka, Japan

[2] Osaka Univ, Grad Sch Med, Dept Radiat Oncol, Suita, Osaka, Japan

[3] Osaka Gen Med Ctr, Dept Radiat Oncol, Osaka, Japan

来源：

PHYSICS & IMAGING IN RADIATION ONCOLOGY | 2018年 / 7卷

关键词：

High-dose-rate brachytherapy; Source model; Dose calculation;

D O I：

10.1016/j.phro.2018.08.004

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

In high-dose-rate brachytherapy, the geometry of the radioactive source is sometimes updated. Some institutions use a different source model for the dose calculation in treatment planning and treatment. The effects of this discrepancy were examined for four types of treatment plans, and ten patients were selected for each treatment plan. The impact of different source models depended on the types of treatment plan, patients, and dose index. To reduce the uncertainty and improve the reliability of the data, it would be better to use more robust metrics (D-90 and D-2cc) for treatment planning evaluation in facilities with this problem.

引用

页码：23 / 26

页数：4

共 18 条

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