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作 者:张峰[1] 陈宇导 谢良骏[1] 彭小林[1] 陈谊[1] 范日升[1]
机构地区:[1]中山大学附属第三医院核医学科,广东广州510630
出 处:《中国医疗设备》2016年第9期116-118,共3页China Medical Devices
摘 要:目的总结Hawkeye SPECT/CT固有均匀性在日常质量控制中的校准方法,并分析其产生性能漂移的常见原因。方法选择我院2013年1月-6月Hawkeye仪器日常质控的部分数据,分析仪器的均匀性等基本情况;针对我院Hawkeye探头出现的中心视野"亮点",而且中心视野均匀性(Center Field of View,CFOV)均匀性值偏离很大(23.17%)的现象,使用仪器提供的迭代校准程序(Iterative Calibration,ITER)进行校正。结果仪器固有均匀性通过校正后均可达到正常值(CFOV〈3.5%)。结论 Hawkeye仪器均匀性值的漂移可以通过有效的日常质量控制得到校准,通过校准可以使相机均匀性保持在较理想状态、仪器整体性能得以保证。Objective To summarize the uniformity calibration method of daily quality control(QC) of Hawkeye device and to analyze the common causes of property drift. Methods Part of the QC data of Hawkeye device collected in our hospital from January 2013 to June 2013 was selected to make an analysis of its uniformity. The bright spot was found in the center field of Hawkeye probe in the hospital, and its CFOV(Center Field of View) uniformity values deviated greatly(23.17%). In view of this, the ITER(Iterative Calibration) procedure of Hawkeye device was initiated for correction of the CFOV uniformity values. Results The intrinsic uniformity of the device went back to normal value(CFOV〈3.5%) after correction. Conclusion Effective daily QC could correct the uniformity value drift of Hawkeye device, which enables the maintenance of its uniformity in perfect status and assures its complete performance.
关 键 词:SPECT 质量控制 均匀性 能峰位置 能量分辨率
分 类 号:TH774[机械工程—仪器科学与技术]
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