Methodology of thermal drift measurements for surface guided radiation therapy systems and clinical impact assessment illustrated on the C-Rad Catalyst+ HD system

Technical Innovations & Patient Support in Radiation Oncology

Joshua Wolf¹  Therese S. Standen²  Guneet Kaur³  Joerg Lehmann⁴  Alex Wilfert⁴  John Simpson⁴ 

[1] Corresponding author.;University of Newcastle, Newcastle, Australia;University of Sydney, Sydney, Australia;Calvary Mater Newcastle, Newcastle, Australia;

关键词: SGRT;    Drift;    Quality assurance;    Clinical impact;    Thermal drift;   

DOI  :  

来源: DOAJ

【 摘 要 】

Thermal drift of optical systems employed for surface guided radiation therapy (SGRT) adds uncertainty to patient setup and monitoring. This work describes methods to measure the drift of individual camera pods as well as the drift of the combined clinical signal. It presents results for four clinical C-Rad Catalyst+ HD systems. Based on the measured clinical drift, recipes are provided on how to calculate relevant uncertainties in patient setup and patient position monitoring with SGRT. Strategies to reduce the impact of drift are explained. While the results are specific to the systems investigated, the methodology is transferable and the clinical recipes are universally applicable.

【 授权许可】

Unknown