医用乳腺X线机管电压量传技术研究  

Research on Traceability Method of Tube Voltage and Measurement of Medical Breast Machine Study on Tube Voltage Value Transfer Technology of Medical Breast X-ray Machine

作　　者：任国月 郭思明[1] 秦峰 马伯轩 REN Guoyue;GUO Siming;QIN Feng;MA Boxuan(National Institute of Metrology,Beijing 100029,China)

机构地区：[1]中国计量科学研究院,北京100029

出　　处：《计量学报》2024年第12期1892-1899,共8页Acta Metrologica Sinica

基　　金：国家自然科学基金(12205289);中国计量科学研究院基本科研业务经费(AKYZD2412)。

摘　　要：随着诊断X射线质量评价体系的不断完善,管电压已经成为评价X射线辐射束质量的重要指标。主要研究了医用乳腺X线机管电压的测量方法和溯源方法。管电压的测量采用了分压箱分压法和能谱终点法2种方法。将测量结果对市场上常用的几种半导体探测器进行了量传。实验结果表明,2种方法测量管电压的最大误差在1.0%以内,验证了分压箱分压法以及能谱终点法测量得到的管电压的结果是可靠的。对国内市场上常用的4种半导体探测器管电压测量结果进行了校准,相对固有误差的偏差都在2.0%以内,满足医用乳腺X线机质控的需求。With the continuous improvement of the diagnostic X-ray quality evaluation system,tube voltage has become the important index for evaluating the quality of X-ray radiation beams.The measurement method and traceability method of medical breast tube voltage are mainly studied.Two methods are used to measure the tube voltage,namely the voltage divider box voltage division method and the energy spectrum endpoint method.The measurement results are quantitatively transmitted to several semiconductor detectors commonly used in the market.The experimental results show that the maximum difference between the two methods of tube voltage measurement is within 1.0%,the results of measuring the tube voltage using the above two methods have been verified to be reliable.The voltage measurement results of four semiconductor detector tubes commonly used in the domestic market are calibrated,and the deviation of the relative inherent error is within 2.0%,which can be used for on-site quality control of medical breast machines.

关 键 词：电离辐射计量 乳腺X线机 管电压 介入式分压箱 能谱 半导体探测器 

分 类 号：TB98[一般工业技术—计量学]