使用Daily QA3晨检仪测量气压值的应用分析  

Application Analysis on Measurement of Atmospheric Pressure Using Daily QA3

作　　者：柏正璐 时飞跃[2] 秦伟[2] 蒋红兵[1] BAI Zheng-lu;SHI Fei–yue;QIN Wei;JIANG Hong-bing

机构地区：[1]南京医科大学附属南京医院医疗设备处,江苏南京210006 [2]南京医科大学附属南京医院肿瘤放疗中心,江苏南京210006

出　　处：《中国医疗设备》2017年第5期73-75,共3页China Medical Devices

基　　金：南京市医学科技发展资金"青年工程"人才培养专项经费资助项目(QRX11033)

摘　　要：目的比较SNC Daily QA3晨检仪与气压表测得的气压值差别,评估Daily QA3记录的气压值的准确性。方法选取2014年6月~2015年12月时间内,周检时使用气压表测量得到的加速器所处环境气压值,以及当天Daily QA3晨检仪记录的加速器所处环境气压值,将两数据进行对比分析。结果 Daily QA3晨检仪记录的气压值与气压表测量的气压值符合较好,两种气压的差值均在±0.5 k Pa以内。结论 Daily QA3晨检仪检测得的加速器所处环境气压值精度较高,可为放疗工作的气压测量提供参考。Objective To compare the atmospheric pressure acquired by SNC Daily QA3with that by barometer and assess the accuracy of pressure value recording by Daily QA3.Methods We selected the measured value of atmospheric pressure around the accelerator acquired by barometer and Daily QA3at weekly inspection between June2014and December2015,then compared and analyzed the data.Results The value acquired by Daily QA3is corresponding to that measured by barometer.The difference between the two values is within±0.5kPa.Conclusion The precision of atmospheric pressure value given by Daily QA3is high and it can provide reference for the pressure measurement of radiotherapy.

关 键 词：大气压 DailyQA3晨检仪 医用加速器 剂量仪 电离室 

分 类 号：TL53[核科学技术—核技术及应用]