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Calibration method for radiation detector, and particle therapy system

机译:放射线检测器的校准方法以及粒子治疗系统

摘要

A stacked type of radiation detector and a calibration method that enables the radiation detector to correct variations in sensor-specific output easily and within a short time, without using a water-phantom dose detector. The radiation detector is equipped with a sensor section including a plurality of sensors arranged in layers in a traveling direction of a particle beam. A dummy absorber has water-equivalent thickness equal to an average water-equivalent thickness of the sensors. A signal-processing unit calculates sensor-specific calibration coefficients using a measurement result obtained during irradiation of the radiation detector with the radiation when electrical signals developed in each sensor are measured, and a measurement result obtained during irradiation of the radiation detector with the radiation when the sensor section is moved in the traveling direction of the radiation, then the dummy absorber is set in place, and electrical signals developed in each sensor are measured.
机译:堆叠式辐射探测器和校准方法,使辐射探测器无需使用水幻像剂量探测器即可轻松且在短时间内校正传感器特定输出的变化。放射线检测器配备有传感器部,该传感器部包括在粒子束的行进方向上分层布置的多个传感器。虚拟吸收体的水当量厚度等于传感器的平均水当量厚度。当测量在每个传感器中产生的电信号时,信号处理单元使用在放射线检测器辐照放射线期间获得的测量结果以及在放射线检测器辐照放射线检测器期间获得的测量结果来计算传感器特定的校准系数。传感器部分沿辐射的传播方向移动,然后将虚拟吸收器安装到位,并测量每个传感器中产生的电信号。

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