开始使用和IDENTIFYY的临床评估
Elizabeth L Covington1,2, Dennis N Stanley1, Rodney J Sullivan1
1Department of Radiation Oncology, University of Alabama at Birmingham, Birmingham, Alabama, USA.
Journal of applied clinical medical physics
|June 8, 2023
概括
新的IDENTIFY表面成像系统有效地跟踪患者在无框架立体影像放射手术 (fSRS) 期间的运动. 性能与现有系统可比,尽管偏移随着门阻塞和非零沙发角度的增加而增加.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
背景情况:
- 无框架立体影射手术 (fSRS) 需要精确的患者定位.
- 表面成像 (SI) 系统可以监测碎片内运动以提高准确性.
- 评估新的SI系统对于推进放射治疗技术至关重要.
研究的目的:
- 委托并评估IDENTIFY表面成像系统的临床性能.
- 使用IDENTIFY系统在fSRS过程中分析分数内运动.
- 评估系统的准确性,并确定影响其性能的因素.
主要方法:
- 在边缘线性加速器上启用IDENTIFY SI系统.
- 用HyperArc.进行内放射治疗的患者的内断片运动监测.
- IDENTIFY日志文件与轨迹数据的相关性,以及基于台/沙发角度和患者种族的偏移分析.
主要成果:
- 开始使用的数据符合所有推的公差值.
- 通过IDENTIFY系统监测了386名患者的1164个分数.
- 转移偏差的中位数为0.27毫米;偏差随着门廊阻塞 (0.50毫米为白人,0.80毫米为黑人患者) 和非零的沙发角度而增加.
结论:
- 鉴定SI系统的临床性能与现有的商业SI系统相美.
- 系统性能受到门障碍和沙发角度的影响.
- 需要进一步评估,以了解不同患者人口统计学中的表现变化.
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