近距离放射治疗治疗计划系统的审核测试设计
The Design of an Audit Test for Co Brachytherapy Treatment Planning System.
作者信息
Birgani Mohammad Javad Tahmasebi, Khorshidsavar Hadis, Bagheri Ali, Danyaei Amir, Abdalvand Neda
机构信息
Department of Medical Physics, Medicine School, Ahvaz, Iran.
Department of Radiation Oncology, Golestan Hospital, Ahvaz Jundishapur University of Medical Science, Ahvaz, Iran.
出版信息
J Med Signals Sens. 2022 May 12;12(2):133-137. doi: 10.4103/jmss.JMSS_47_19. eCollection 2022 Apr-Jun.
BACKGROUND
Auditing the treatment planning system (TPS) software for a radiotherapy unit is of paramount importance in any radiation therapy department. A Plexiglas phantom was proposed to measure the ionization of Co high dose rate (HDR) source and compare dose points in the planning system for auditing and verifying TPS.
METHODS
Auditing was performed using a Plexiglas phantom in an end-to-end test, and relative dose points were detected by a farmer-type ionization chamber and compared with the relative dose of similar points in TPS. The audit results were determined as pass optimal level (<3.3%), pass action level (between 3.3% and 5%), and out of tolerance (>5%).
RESULTS
The comparison of the collected data revealed that 80% of the measured values were ≤5% in the pass level, and 20% of the points were out of tolerance (between 5% and 6.99%).
CONCLUSION
This study documented the appropriateness of the dosimetry audit test and this phantom design for the HDR brachytherapy TPS.
背景
对放疗科室的治疗计划系统（TPS）软件进行审核在任何放射治疗部门都至关重要。有人提出使用有机玻璃模体来测量钴高剂量率（HDR）源的电离情况，并比较计划系统中的剂量点，以审核和验证TPS。
方法
在端到端测试中使用有机玻璃模体进行审核，通过 Farmer 型电离室检测相对剂量点，并与TPS中类似点的相对剂量进行比较。审核结果分为通过最佳水平（<3.3%）、通过行动水平（3.3%至5%之间）和超出公差（>5%）。
结果
收集数据的比较显示，在通过水平中，80%的测量值≤5%，20%的点超出公差（5%至6.99%之间）。
结论
本研究记录了剂量学审核测试以及该模体设计用于 HDR 近距离治疗TPS的适用性。
Zotero 插件