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对于Ethos在线自适应性放射治疗的端到端质量保证程序

S A Yoganathan^1,2, Amine Khemissi¹, Satheesh Paloor¹

¹Department of Radiation Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.

Journal of medical physics

|April 21, 2025

概括

本研究为在线自适应性辐射疗法 (OART) 系统提供了一个端到端 (E2E) 质量保证 (QA) 测试. 埃索斯OART系统在轮,合成CT生成和剂量测量方面表现出高精度,超过96%的马通道率.

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
质量保证质量保证质量保证

背景情况:

在线适应性放射治疗 (OART) 提出了独特的质量保证 (QA) 挑战.
对于OART系统,传统的质量保证方法可能不足.
对于OART系统,需要创新的质量保证方法.

研究的目的:

为Ethos OART系统引入和验证一个端到端 (E2E) 质量保证测试.
在OART中评估轮,合成CT (sCT) 和剂量计的准确性.
建立一个简单的E2E测试,用于OART系统的临床前验证和每月质量保证.

主要方法:

开发了初始治疗计划,使用标准幻影的变形CT图像.
创建和交付适应性计划使用物理质量保证幻象与探测器.
使用了OCTAVIUS-4D,ArcCHECK和RUBY幻象进行评估.

主要成果:

达到了超过96% (2%局部/2毫米) 的马传导率.
证明的点剂量偏差低于0.5%.
获得的子系数>0.9对于身体轮和平均绝对误差<27 HU对于sCT准确度.

结论:

埃索斯OART系统以高精度显示出卓越的性能.
开发的E2E QA测试对于评估OART工作流程的准确性是有效的.
这种方法适用于ORT系统的临床前验证和例行月度质量保证.

关键词:

适应性的适应性的爱索斯 (Ethos) 是一种文化.终端到终端的终端.在线在线在线在线在线在线在线质量保证质量保证质量保证辐射疗法辐射疗法

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