Department of Radiation Physics, University of Toronto, Toronto, Ontario, Canada.
Med Phys. 2012 Apr;39(4):1946-63. doi: 10.1118/1.3690466.
Commercial CT-based image-guided radiotherapy (IGRT) systems allow widespread management of geometric variations in patient setup and internal organ motion. This document provides consensus recommendations for quality assurance protocols that ensure patient safety and patient treatment fidelity for such systems.
The AAPM TG-179 reviews clinical implementation and quality assurance aspects for commercially available CT-based IGRT, each with their unique capabilities and underlying physics. The systems described are kilovolt and megavolt cone-beam CT, fan-beam MVCT, and CT-on-rails. A summary of the literature describing current clinical usage is also provided.
This report proposes a generic quality assurance program for CT-based IGRT systems in an effort to provide a vendor-independent program for clinical users. Published data from long-term, repeated quality control tests form the basis of the proposed test frequencies and tolerances.
A program for quality control of CT-based image-guidance systems has been produced, with focus on geometry, image quality, image dose, system operation, and safety. Agreement and clarification with respect to reports from the AAPM TG-101, TG-104, TG-142, and TG-148 has been addressed.
商业 CT 基图像引导放射治疗（IGRT）系统允许广泛管理患者设置和内部器官运动中的几何变化。本文为确保此类系统的患者安全和患者治疗一致性提供了质量保证协议的共识建议。
AAPM TG-179 审查了商用 CT 基 IGRT 的临床实施和质量保证方面，每个系统都具有独特的功能和基础物理学。所描述的系统包括千伏和兆伏锥形束 CT、扇形束 MVCT 和轨道 CT。还提供了描述当前临床使用情况的文献综述。
本报告提出了一种通用的 CT 基 IGRT 系统质量保证计划，旨在为临床用户提供一种与供应商无关的计划。长期、重复的质量控制测试的已发表数据为建议的测试频率和公差提供了基础。
已经制定了用于 CT 基图像引导系统的质量控制计划，重点是几何形状、图像质量、图像剂量、系统操作和安全性。已经解决了与 AAPM TG-101、TG-104、TG-142 和 TG-148 的报告的一致性和澄清问题。
