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首次在人体上使用修改后的常规C臂线性加速器进行e-Flash放射治疗.

Jens von der Grün1, Riccardo Dal Bello1, Serena Psoroulas1

  • 1Department of Radiation Oncology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.

Clinical and translational radiation oncology
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概括

这项研究介绍了第一个使用改性常规线性加速器进行e-Flash (超高剂量率) 放射治疗的患者. 治疗显示出良好的瘤反应,没有严重的毒性,证明了这种新方法的安全性.

关键词:
临床翻译 临床翻译剂量测量方法 剂量测量方法电子 电子 是一个电子.闪光RT - 闪光RT可以使用.恶性黑色素瘤是一种恶性黑色素瘤.在UHDR中,UHDR是UHDR.

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科学领域:

  • 辐射瘤学 辐射瘤学
  • 医学物理 医学物理

背景情况:

  • FLASH效应旨在通过在超高剂量速率下节省正常组织,同时保持瘤控制,从而改善癌症治疗.
  • 传统的线性加速器正在改造为用于研究目的的超高剂量率 (UHDR) 电子束传输.

研究的目的:

  • 报告通过改进的常规线性加速器传递的e-Flash放射治疗的首次在人体上的安全性和可行性数据.
  • 为了评估使用e-Flash电子束治疗的患者的初始瘤反应和毒性.

主要方法:

  • 一个传统的Varian TrueBeam线性加速器被修改为提供9 MeV UHDR电子束.
  • 一名患有黑色素瘤病变的患者在经批准的第一阶段试验协议 (NCT06549439) 下接受治疗.
  • 患者接受了9 Gy的3个分数,前两个通过e-Flash传递,第三个通过常规电子传递,通过体内剂量测量监测.

主要成果:

  • 根据治疗方案,e-Flash 分数已成功输送.
  • 活体剂量测量证实了准确的剂量递送.
  • 患者表现出良好的瘤反应,在治疗后六周内没有观察到严重或意想不到的毒性.

结论:

  • 这项研究证明了e-Flash辐射疗法的第一个成功的临床应用,使用了经过修改的常规线性加速器.
  • 适应传统的线性加速器以提供e-Flash可以加快Flash放射治疗的临床试验.