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前列腺SBRT实时运动管理的临床实施:放射治疗师的观点
Joanne Mitchell1,2,3, Duncan B McLaren1,2, Donna Burns Pollock1
1Department of Clinical Oncology, Edinburgh Cancer Centre, Western General Hospital, Crewe Road South, Edinburgh EH4 2XU, UK.
Technical innovations & patient support in radiation oncology
|September 2, 2024
概括
与RayPilot (RP) 系统相比,Micropos HypoCath (HC) 系统在立体射线疗法 (SBRT) 期间监测前列腺运动时表现出更好的一致性. 这种改进的监测可能有助于减少前列腺癌患者的治疗毒性.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 针对前列腺癌的低分离立体动态体辐射疗法 (SBRT) 需要精确的运动监测.
- 放射治疗师主导的 (RTT) 过程正在出现,用于管理这些专业技术.
- 实时前列腺运动监测系统对于SBRT的准确性至关重要.
研究的目的:
- 通过使用两个运动监控系统,审查一个RTT主导的处理过程.
- 介绍SBRT前列腺临床试验中使用Micropos RayPilot (RP) 和HypoCath (HC) 系统的初步发现.
- 为了比较RP和HC系统在前列腺SBRT中的疗效和结果.
主要方法:
- 研究了18名接受前列腺癌SBRT治疗的患者.
- 9名患者使用了Micropos RayPilot (RP) 系统,另外9人使用了Micropos HypoCath (HC) 系统.
- 每天进行圆束CT (CBCT) 成像,毒性评估 (RTOG分级) 和位移测量 (Vrt,Lng,Lat).
主要成果:
- 该HC系统的横向 (Lat) 位移明显小于RP系统 (P=0.003).
- 而HC组表现出更一致的膀体积.
- 在6周的排位和2级生殖尿道 (GU) 毒性 (P=0.029) 和12周的胃肠道 (GI) 毒性 (P=0.013) 之间发现了显著的相关性.
结论:
- 无论是RP还是HC系统,都能在SBRT期间实时监测前列腺运动.
- 通过尿导管集成的HC系统在SBRT前列腺工作流程中被证明是有利的.
- 这些发现支持HC系统对改善前列腺SBRT精度和潜在毒性降低的实用性.
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