医用CT剂量仪的校准与评价的研究

摘要

In this paper,the author analyzed ionization chamber structure and circuits of medical CT dosimeter, introduced standard and calibration melhod of CT dosimeter of the Secondary Standard of Dosimetry Laboratory (Beijing SSDL), emphasized on importance of the calibration on quality control of the CT medical equipment.%在分析医用CT剂量仪结构和电路原理的基础上,结合国内外相关的法规标准,医用CT电离室剂量仪在标准剂量学实验室的检定校准的程序和方法.阐述了剂量仪的定期校准在CT设备应用质量控制、以及在保障诊断影像质量的前提下降低受检者剂量的重要性.