Commissioning and quality assurance of RapidArc radiotherapy delivery system
Commissioning and quality assurance of RapidArc radiotherapy delivery system
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DOI：
10.1016/j.ijrobp.2008.05.060
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发表时间：
2008-10-01
影响因子：
7
通讯作者：
LoSasso, Thomas
中科院分区：
文献类型：
--
作者：
Ling, C. Clifton;Zhang, Pengpeng;LoSasso, Thomas
目的：瓦里安RapidArc是一个用于调强放射治疗(IMRT)治疗计划和实施的系统。RapidArc结合了可变剂量率、可变机架速度和准确快速的动态多叶准直器(DMLC)等功能，以优化剂量一致性、输送效率、准确性和可靠性。我们制定了RapidArc系统调试和质量保证(QA)程序。方法和材料：设计了逐步评估RapidArc性能的测试。首先，对龙门转动过程中的位置精度进行了检测。其次，对改变和控制剂量率和台架速度的能力进行了评估。结果：将栅栏试验应用于RapidArc，比较了固定式龙门和RapidArc模式下得到的图形，结果表明，龙门旋转对叶片精度的影响很小(
Purpose: The Varian RapidArc is a system for intensity-modulated radiotherapy (IMRT) treatment planning and delivery. RapidArc incorporates capabilities such as variable dose-rate, variable gantry speed, and accurate and fast dynamic multileaf collimators (DMLC), to optimize dose conformality, delivery efficiency, accuracy and reliability. We developed RapidArc system commissioning and quality assurance (QA) procedures.Methods and Materials: Tests have been designed that evaluate RapidArc performance in a stepwise manner. First, the accuracy position during gantry rotation is examined. Second, the ability to vary and control the dose-rate and gantry speed is evaluated. Third, the combined use of variable DMLC speed and dose-rate is studied.Results: Adapting the picket fence test for RapidArc, we compared the patterns obtained with stationary gantry and in RapidArc mode, and showed that the effect of gantry rotation on leaf accuracy was minimal (