IEC 62220-1-1:2015 医疗电气设备 - 数字X射线成像设备的特性 - 第1-1部分:探测量子效率的确定 - 用于放射成像的探测器

标准编号：IEC 62220-1-1:2015

中文名称：医疗电气设备 - 数字X射线成像设备的特性 - 第1-1部分:探测量子效率的确定 - 用于放射成像的探测器

英文名称：Medical electrical equipment - Characteristics of digital X-ray imaging devices - Part 1-1: Determination of the detective quantum efficiency - Detectors used in radiographic imaging

发布日期：2015-03-12

标准范围

IEC 62220-1-1:20 15规定了在制造商规定的医疗应用范围内的工作条件下，作为空气比释动能和空间频率的函数的数字X射线成像设备的探测量子效率(DQE)的确定方法。IEC 62220这一部分的预期用户是制造商和设备齐全的测试实验室。IEC 62220-1-1的第一版取消并取代了IEC 62220-1:20 03。它构成了IEC 62220-1:20 03的技术修订版，并确保与IEC 62220系列的其他部分更好地保持一致。主要变化如下:-考虑到IEC 61267:2005，进行了必要的修改。这影响HVL值和SNRin2；-用于确定滞后效应的方法现在考虑滞后和重影补偿；-作为MTF确定的一部分，获得最终平均MTF的方法受到限制(仅允许ESF的平均)；-添加了(可选地)获得对角线(45°)MTF和NPS的描述。

IEC 62220-1-1:2015 specifies the method for the determination of the DETECTIVE QUANTUM EFFICIENCY (DQE) of DIGITAL X-RAY IMAGING DEVICES as a function of AIR KERMA and of SPATIAL FREQUENCY for the working conditions in the range of the medical application as specified by the MANUFACTURER. The intended users of this part of IEC 62220 are manufacturers and well equipped test laboratories. This first edition of IEC 62220-1-1 cancels and replaces IEC 62220-1:2003. It constitutes a technical revision of IEC 62220-1:2003 and assures a better alignment with the other parts of the IEC 62220 series. The main changes are as follows:
- necessary modifications have been applied as a consequence of taking into account IEC 61267:2005. This influences HVL values and SNRin2;
- the method for the determination of LAG EFFECTS now considers lag and ghosting compensation;
- as part of the MTF determination, the method of obtaining the final averaged MTF has been restricted (only averaging of the ESF is allowed);
- a description of (optionally) obtaining the diagonal (45°) MTF and NPS has been added.

标准预览图