光学体表监测技术引导的放射治疗应用现状与前景  

Current Status and Prospects of Radiation Therapy Guided by Optical Surface Monitoring Technology

作　　者：沈晶 陈琬琦 侯晓荣 邱杰 SHEN Jing;CHEN Wanqi;HOU Xiaorong;QIU Jie(Department of Radiation Oncology,Peking Union Medical College Hospital,Chinese Academy of Medical Sciences&Peking Union Medical College,Beijing 100730,China;Department of Nuclear Medicine,Sun Yat-sen University Cancer Center,Zhongshan,Guangdong 510060,China)

机构地区：[1]中国医学科学院北京协和医院放射治疗科,北京100730 [2]中山大学肿瘤防治中心核医学科,广东中山510060

出　　处：《协和医学杂志》2024年第1期135-140,共6页Medical Journal of Peking Union Medical College Hospital

基　　金：中央高水平医院临床科研专项(2022-PUMCH-A-99,2022-PUMCH-B-116)。

摘　　要：光学体表监测技术(surface guided radiation therapy,SGRT)是一种在放射治疗过程中对患者进行连续体位监测的无辐射、无创性技术,通过先进的3D光学表面定位及追踪技术,快速获取患者的体表轮廓信息,生成高精度的3D体表轮廓,可在放射治疗期间对患者进行实时监测,保证放射治疗的精准性。SGRT已广泛应用于乳腺、颅内、头颈和四肢等不同部位肿瘤的放射治疗中,其优势在于减少初始摆位误差、实时监测治疗过程,并与呼吸门控和深吸气屏气治疗技术相结合。SGRT还可通过减少锥形束CT的使用进而降低辐射剂量,提高患者应用固定装置的舒适性,提升临床工作效率和安全性等。本文阐述SGRT常用系统及其临床应用,并探讨其局限性和未来发展前景。Surface guided radiation therapy(SGRT) is a non-radiation,non-invasive technology that provides continuous postural monitoring of patients during radiotherapy.Using advanced 3D optical surface localization and tracking technology,SGRT quickly captures the surface contour information of patients through optical means to generate high-precision 3D surface contours,enabling real-time monitoring of patients during radiotherapy to ensure its accuracy.This image-guided technology has been widely applied in radiotherapy for tumors in different parts of the body,such as breast,intracranial,head and neck,and limbs.SGRT can reduce initial setup errors and provide real-time monitoring during treatment,or be combined with respiratory gating and deep inspiration breath-hold techniques.SGRT can also reduce radiation dose by reducing the use of CBCT,improve patient comfort with the use of immobilization devices,and enhance clinical speed,efficiency,and safety.This review aims to provide an overview of the commonly used technology and clinical applications of SGRT,and discuss its current limitations and future prospects.

关 键 词：光学体表监测技术 表面成像 放射治疗 表面引导放射治疗 

分 类 号：R81[医药卫生—放射医学] R815[医药卫生—临床医学]