咨询客服 咨询客服

Fraction-specific post-treatment quality assurance for active breath-hold radiation therapy

Abstract:
Purpose The purpose of this study is to evaluate variation in the treatment hold pattern and quantify its dosimetric impact in breath-hold radiotherapy, using fraction-specific post-treatment quality assurance. Material and Methods A patient with lung mets treated using intensity-modulated radiation therapy (IMRT) with active breath coordinator (ABC) was recruited for the study. Treatment beam hold conditions were recorded for all the 25 fractions. The linearity and reproducibility of the dosimetric system were measured. Variation in the dose output of unmodulated open beam with beam hold was studied. Patient-specific quality assurance (PSQA) was performed with and without beam hold, and the results were compared to quantify the dosimetric impact of beam hold. Results There was a considerable amount of variation observed in the number of beam hold for the given field and the monitor unit at which the beam held. Linearity and reproducibility of the dosimetric system were found within the acceptable limits. The average difference over the 25 measurements was 0·044% (0·557 to −0·318%) with standard deviation of 0·248. Conclusion Patient comfort with the ABC system and responsiveness to the therapist communication help to maintain consistent breathing pattern, in turn consistent treatment delivery pattern. However, the magnitude of dosimetric error is much less than the acceptable limits recommended by IROC. The dosimetric error induced by the beam hold is over and above the dose difference observed in conventional PSQA.
Author Listing: Rajesh Thiyagarajan;Arunai Nambiraj;Durai Manigandan;Tamilseivan Singaravelu;Rajesh Selvaraj;Tejinder Kataria
Volume: 18
Pages: 262-270
DOI: 10.1017/S1460396919000049
Language: English
Journal: Journal of Radiotherapy in Practice

Journal of Radiotherapy in Practice

J RADIOTHER PRACT

影响因子:0.5
是否综述期刊:否
是否OA:否
是否预警:不在预警名单内
发行时间:-
ISSN:1460-3969
发刊频率:-
收录数据库:ESCI/Scopus收录
出版国家/地区:-
出版社:Cambridge University Press

期刊介绍

年发文量 28
国人发稿量 -
国人发文占比 0%
自引率 0.0%
平均录取率 -
平均审稿周期 -
版面费 US$3255
偏重研究方向 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
期刊官网 -
投稿链接 -

质量指标占比

研究类文章占比 OA被引用占比 撤稿占比 出版后修正文章占比
100.00% 20.38% - -

相关指数

影响因子
影响因子
年发文量
自引率
Cite Score

预警情况

时间 预警情况
2025年03月发布的2025版 不在预警名单中
2024年02月发布的2024版 不在预警名单中
2023年01月发布的2023版 不在预警名单中
2021年12月发布的2021版 不在预警名单中
2020年12月发布的2020版 不在预警名单中

JCR分区 WOS分区等级:Q4区

版本 按学科 分区
WOS期刊SCI分区
(2021-2022年最新版)
RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING Q4

中科院分区

版本 大类学科 小类学科 Top期刊 综述期刊
暂无数据