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为保障我国目前使用的X射线诊断光机曝光电流量值的准确性,开展医用诊断X射线非介入电流测量仪计量校准的研究,分析国内电流仪的校准方法和诊断辐射源检定规程,结合非介入电流仪测量的物理环境条件,提出非介入电流仪的计量指标要求、校准测试设备的技术要求。详细介绍开展校准工作的测试原理和数据处理方法,将诊断辐射源首次引入到电流仪的校准工作中作为触发信号,利用标准电流源,采用多台非介入电流测量仪进行实验研究和分析,证明校准工作的科学性、可操作性、有效性。
In order to ensure the accuracy of the exposure current value of X-ray diagnosis machine currently used in our country, carry out the measurement calibration of medical diagnostic X-ray non-intrusive current meter, analyze the calibration method of domestic current meter and the verification procedure of radiation source, Interventional current measurement of the physical environment conditions, proposed non-interventional current meter measurement requirements, calibration test equipment technical requirements. Introducing the test principle and data processing method of calibration work in detail, the diagnostic radiation source was first introduced into the calibration work of current meter as the triggering signal, the standard current source was used, and several non-intrusive current meters were used to conduct experimental research and analysis. Calibration of the scientific, operational, effectiveness.