Li Winnie, Bootsma Gregory, Shultz David, Laperriere Normand, Millar Barbara-Ann, Cho Young Bin, Jaffray David A, Chung Caroline, Coolens Catherine
Radiation Medicine Program, Princess Margaret Cancer Centre, Toronto, ON, Canada.
Department of Radiation Oncology, University of Toronto, Toronto, ON, Canada.
Phys Imaging Radiat Oncol. 2023 Jan 21;25:100415. doi: 10.1016/j.phro.2023.100415. eCollection 2023 Jan.
As frameless stereotactic radiosurgery increase in use, the aim of this study was to evaluate intra-fraction motion through cone-beam CT (CBCT) and high-definition motion management (HDMM) systems. Intra-fraction motion measured between localization, repeat localization and post-treatment CBCTs were correlated to intra-faction motion indicated by the HDMM files using the Pearson coefficient (r). A total of 302 plans were reviewed from 263 patients (114 male, 149 female); 216 pairs of localization-repeat localization, and 260 localization-post-treatment CBCTs were analyzed against HDMM logs. We found the magnitude of intra-fraction motion detected by the HDMM system were larger than the corresponding CBCT results.
随着无框架立体定向放射外科手术的使用增加，本研究的目的是通过锥形束CT（CBCT）和高清运动管理（HDMM）系统评估分次内运动。使用Pearson系数（r），将定位、重复定位和治疗后CBCT之间测量的分次内运动与HDMM文件显示的分次内运动进行关联。共回顾了263例患者（114例男性，149例女性）的302个计划；针对HDMM日志分析了216对定位-重复定位以及260个定位-治疗后CBCT。我们发现，HDMM系统检测到的分次内运动幅度大于相应的CBCT结果。
