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在O环线性加速器上对切伦科夫成像参数和位置约束的描述

Daniel A Alexander¹, Srikanth Majji², Michael Jermyn^2,3

¹Department of Radiation Oncology, University of Pennsylvania, Philadelphia PA, United States of America.

Physics in medicine and biology

|September 27, 2023

概括

切伦科夫成像在Halcyon线性加速器上是可行的,提供了改进的信号噪声比率. 这种成像技术的最佳摄像头位置取决于治疗地点,并提供特定的可见度数据.

科学领域:

医学物理医学物理
辐射瘤学辐射瘤学
图像技术技术的成像技术

背景情况:

在Halcyon O环线性加速器平台上引入切伦科夫成像技术.
需要证明成像的可行性,并优化相机放置这个新的应用程序.

研究的目的:

为了证明切伦科夫成像在Halcyon平台上的可行性.
为了优化摄像头的位置,为切伦科夫在Halcyon上的成像.
为了将成像指标与TrueBeam平台进行比较.

主要方法:

通过使用Halcyon上的简单光束触发数据获得了切伦科夫图像框架.
将分析的指标与来自TrueBeam平台的指标进行比较.
执行患者治疗计划的3D染,以评估不同摄像头位置的可见性.

主要成果:

切伦科夫成像系统与Halcyon的脉冲定时兼容,增强了信号对噪声的效果.
最佳的摄像头放置取决于治疗地点,在异中中心周围的双圆形可见性区域内.
右胸部图形的中位可见度最高 (80.33%前方,68.49%后方);头部和部的中位可见度最低 (26.44%前方,38.18%后方).

结论:

介绍了在任何平台上为切伦科夫成像提供第一个正式的摄像头位置分析,作为其他平台的模板.
证实切伦科夫的成像参数不需要改变,以获得最佳的Halcyon成像.
为扩展依赖视线可见性的光学成像系统提供了一个框架.

关键词:

切伦科夫 (Cherenkov) 是一个摄像机的位置摄像机的位置塞伦科夫科夫 (Cerenkov) 是一个哈尔西安的情况.这是光学成像.

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