High dose rate conditions, coupled with problems related to small field dosimetry, make dose characterization for FLASH-RT challenging. Most conventional dosimeters show significant dependence on dose rate at ultra-high dose rate conditions or fail to provide sufficiently fast temporal data for pulse to pulse dosimetry. Here fast 2D imaging of radioluminescence from a water and quinine phantom was tested for dosimetry of individual 4 μs linac pulses.

中文翻译：

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技术说明：在水箱中使用光学成像对 FLASH-RT 进行单脉冲光束表征

高剂量率条件，加上与小视场剂量测定相关的问题，使得 FLASH-RT 的剂量表征具有挑战性。大多数传统剂量计在超高剂量率条件下表现出对剂量率的显着依赖性，或者无法为脉冲间剂量测定提供足够快的时间数据。这里测试了来自水和奎宁体模的放射发光的快速二维成像，以用于单个 4 μs 直线加速器脉冲的剂量测定。