闪光:物理,化学,生物学和癌症医学的新交叉点
Marie-Catherine Vozenin1, Billy W Loo2, Sami Tantawi3
1Radiotherapy and Radiobiology Sector, Radiation Therapy Service, University Hospital of Geneva and Laboratory of Innovation in Radiobiology Applied to Radiotherapy (LiRR), University of Geneva, Geneva, Switzerland.
Reviews of modern physics
|March 11, 2026
概括
超高剂量率,FLASH辐射疗法提供辐射比传统方法快1000倍以上. 这种方法显示出消除瘤的潜力,同时显著减少正常组织的毒性,定义了FLASH效应.
科学领域:
- 辐射瘤学 辐射瘤学
- 医学物理 医学物理
- 癌症生物学 癌症生物学
背景情况:
- 超高剂量率 (UHDR) 闪光照射疗法是辐射瘤学的新方法.
- 它以超过40 Gy/s的速度传递辐射剂量,比传统 (CONV) 方法快得多.
- 闪光疗法旨在通过潜在地根除耐药瘤来改善癌症治疗结果.
研究的目的:
- 审查对剂量速率对瘤和正常组织的影响差异的实验证据.
- 定义和探索在临床前研究中观察到的"FLASH效应".
- 概述FLASH放射治疗的现状,未来的技术发展以及临床翻译先决条件.
主要方法:
- 从多种动物模型 (小鼠,老鼠,斑马鱼,猪,猫) 和器官 (肺,皮肤,肠道,大脑) 的临床前数据的审查.
- 分析使用电子,光子,质子和重离子束的研究.
- 在物理化学和生物层面检查机械学研究.
主要成果:
- 临床前数据表明,抗瘤疗效与剂量速率无关.
- 与CONV辐射相比,UHDR辐射显著降低了正常组织的毒性.
- FLASH效应的特点是减少正常组织的毒性,同时保持抗瘤功效,一直被观察到.
结论:
- 闪光辐射疗法通过节省正常组织,同时保持抗瘤作用,证明了显著的治疗优势.
- 进一步的技术开发,剂量测量,辐射保护和治疗规划对于安全的临床转换至关重要.
- 本综述为跨学科的科学家们提供了一份路线图,以了解FLASH放射治疗的复杂性.
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