对肝细胞癌的同时综合增强和保护质子束疗法方法
Kanokphorn Thonglert1,2, Matthew D Greer3, Stephanie K Schaub1,4
1Department of Radiation Oncology, University of Washington School of Medicine, Seattle, WA, United States.
Clinical and translational radiation oncology
|August 8, 2025
概括
与质子束疗法 (SIB-PBT) 同时整合增强和保护是肝细胞癌 (HCC) 的安全有效治疗方法,可使剂量升级,同时保护有风险的器官 (OAR). 这种方法证明了HCC患者有希望的局部控制和生存率.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
背景情况:
- 与质子束疗法 (SIB-PBT) 同时的综合增强和保护提供了在瘤中剂量升级的潜力,同时节省了有风险的器官 (OAR).
- 肝细胞癌 (HCC) 中SIB-PBT的临床结果需要进一步评估.
研究的目的:
- 评估SIB-PBT在被诊断为HCC的患者的安全性和有效性.
- 评估SIB-PBT在遵守OAR剂量限制的同时升级瘤剂量的能力.
主要方法:
- 在2014年至2021年期间,对47名接受SIB-PBT治疗的HCC患者进行了回顾性审查.
- 辐射剂量从36-67.5 Gy (RBE) 分为15个分量,SIB-PBT用于最大限度地减少OAR暴露,在不同的剂量水平治疗目标,或两者兼而有之.
- 使用卡普兰-梅尔,细灰累积发病率和描述性统计数据分析了生存率,局部控制和毒性.
主要成果:
- 大多数瘤 (87%) 位于胃肠道 (GI) 光线OARs的2厘米范围内.
- 瘤中位直径为9.2厘米. 大多数患者 (91%) 接受了<45 Gy (RBE) 到0.5 毫升的GI OARs.
- 在22个月的随访中位数,两年局部衰竭为12%,两年无进展生存率为12%,整体生存率为49%. 一名患者出现3级急性恶心/吐;没有观察到严重的胃肠道毒性.
结论:
- SIB-PBT促进了OAR保护和异质瘤剂量升级.
- 该技术被证明是HCC的安全有效治疗方式.
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