导航海峡:通过物理学的进步和进一步的临床前表征来实现质子FLASH的潜力
John D Fenwick1, Christopher Mayhew1, Simon Jolly2
1Department of Medical Physics and Biomedical Engineering, University College London, London, United Kingdom.
Frontiers in oncology
|July 18, 2024
概括
超高剂量率FLASH辐射疗法通过节省正常组织显示出癌症治疗的前景. 然而,在提供FLASH质子束疗法的挑战必须克服,以实现其充分的临床潜力.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 癌症治疗 癌症治疗
背景情况:
- 与传统放射疗法相比,超高剂量率 (FLASH) 放射疗法提供了更广泛的治疗窗口,因为它与传统放射疗法相比,省略了正常组织.
- 临床前研究表明,在FLASH时,正常组织的节省率为5-20%,在较高剂量时增加.
研究的目的:
- 审查在提供FLASH质子束疗法的挑战.
- 如果不符合FLASH条件,讨论妥协和剂量计损失.
- 调查克服这些挑战的物理和临床前策略.
主要方法:
- 对FLASH放射治疗和质子束输送现有文献的综述.
- 对剂量测量挑战和潜在妥协的分析.
- 对物理和临床前方法的调查,以优化FLASH交付.
主要成果:
- 提供FLASH质子束疗法面临着重大挑战,即使使用循环子加速器.
- 为满足FLASH条件而做出的妥协可能会导致与临床前收益相当的剂量损失.
- 目前的临床系统正在努力一致满足FLASH剂量率,剂量每小部分和辐射持续时间要求.
结论:
- 系统地克服分娩挑战对于FLASH放射治疗的临床成功至关重要.
- 适应妥协可能会否定FLASH的治疗益处.
- 需要对物理和临床前解决方案进行进一步的研究,才能充分实现FLASH在癌症治疗中的潜力.
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