Establishment of a Test Device for Non-Invasive X-Ray Tube Current Measurement Instruments
LU Jian-rong1, LI Hou-qi2, SI Hai-chen1, LIU Xiao-jun1
1.Institute for Drug and Instrument Control of Health Department of General Logistics Department, Beijing 100071, China; 2.Shengli Oilfield Central Hospital, Dongying Shandong 257034, China
Abstract：Objective To establish the test device for non-invasive X-ray tube current measurement instruments to meet the need of metrological traceability. Methods The DC current generator, digital multi-meter and environmental monitoring instruments were used to establish the test device of non-invasive X-ray tube current measurement instruments. The output current at different output level was measured. The repeatability and the stability of the test device was calculated. The items contributed to the uncertainty were analyzed. With calculation of the uncertainty for each item, the combined uncertainty of the test device was also obtained. Results Through measurement, analysis and calculation, the repeatability and the stability of the test device were verified. Conclusion The parameters of this device met the requirements of the related standard, which could be used for the detection of non-invasive X-ray tube current measurement instruments.
陆建荣，李后奇，斯海臣，刘晓军. 非接入式X射线机管电流测量仪检测装置的建立[J]. 中国医疗设备, 2015, 30(9): 123-125.
LU Jian-rong, LI Hou-qi, SI Hai-chen, LIU Xiao-jun. Establishment of a Test Device for Non-Invasive X-Ray Tube Current Measurement Instruments. China Medical Devices, 2015, 30(9): 123-125.
