AAPM task group 224: Comprehensive proton therapy machine quality assurance
AAPM task group 224: Comprehensive proton therapy machine quality assurance
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DOI：
10.1002/mp.13622
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发表时间：
2019-08-01
期刊：
影响因子：
3.8
通讯作者：
Kase, Yuki
中科院分区：
文献类型：
--
作者：
Arjomandy, Bijan;Taylor, Paige;Kase, Yuki
目的：任务组（TG） 224是由放射治疗委员会和粒子束工作组下属的美国医学物理学家协会科学理事会建立的。该小组负责为三种常用的质子治疗技术（散射、均匀扫描和铅笔束扫描）制定全面的质量保证（QA）指南和建议。本报告补充了其他广泛使用的治疗机器性能的既定QA指南，如光子和电子（TG 142、TG 40、TG 24、TG 22、TG 179和医学物理实践指南2a），并分享了它们的目标，即确保安全、准确和一致地向患者提供放射治疗剂量分布。方法：为了提供一个可以开发特定于机器的QA程序的基础，该报告首先描述了不同的交付技术，并强调了相关机器硬件的重要组成部分。根据特定的机器硬件，某些程序可能或多或少重要，每个机构应调查自己的情况。结果：代替此类调查，本报告确定了通常检查的常见光束参数，以及这些检查的典型频率（每日，每周，每月或每年）。简要描述了选择这些检查及其频率的基本原理。还提供了完成一些定期QA检查的建议工具和过程的简短描述。结论：每个推荐的QA检查的推荐耐受限度被制成表格，并基于文献和来自任务小组成员临床质子经验的共识数据。我们希望这篇报告和其他报告将作为临床物理学家希望建立质子治疗质量保证项目或评估现有项目的参考。
Purpose: Task Group (TG) 224 was established by the American Association of Physicists in Medicine's Science Council under the Radiation Therapy Committee and Work Group on Particle Beams. The group was charged with developing comprehensive quality assurance (QA) guidelines and recommendations for the three commonly employed proton therapy techniques for beam delivery: scattering, uniform scanning, and pencil beam scanning. This report supplements established QA guidelines for therapy machine performance for other widely used modalities, such as photons and electrons (TG 142, TG 40, TG 24, TG 22, TG 179, and Medical Physics Practice Guideline 2a) and shares their aims of ensuring the safe, accurate, and consistent delivery of radiation therapy dose distributions to patients. Methods: To provide a basis from which machine-specific QA procedures can be developed, the report first describes the different delivery techniques and highlights the salient components of the related machine hardware. Depending on the particular machine hardware, certain procedures may be more or less important, and each institution should investigate its own situation. Results: In lieu of such investigations, this report identifies common beam parameters that are typically checked, along with the typical frequencies of those checks (daily, weekly, monthly, or annually). The rationale for choosing these checks and their frequencies is briefly described. Short descriptions of suggested tools and procedures for completing some of the periodic QA checks are also presented. Conclusion: Recommended tolerance limits for each of the recommended QA checks are tabulated, and are based on the literature and on consensus data from the clinical proton experience of the task group members. We hope that this and other reports will serve as a reference for clinical physicists wishing either to establish a proton therapy QA program or to evaluate an existing one.