BS EN 62220-1-3-2008 医疗电气设备.数字X射线成像装置的特性.探测量子效率的测定.动态成像用探测器

标准号：BS EN 62220-1-3-2008
中文标准名称：医疗电气设备.数字X射线成像装置的特性.探测量子效率的测定.动态成像用探测器
英文标准名称：Medical electrical equipment — Characteristics of digital X-ray imaging devices — Part 1-3: Determination of the detective quantum efficiency — Detectors used in dynamic imaging
标准类型：C43
发布日期：2009/4/30 12:00:00
实施日期：2009/4/30 12:00:00
中国标准分类号：C43
国际标准分类号：11.040.50
引用标准：IEC 60336;IEC TR 60788-2004;IEC 61267-1994;ISO 12232-1998
适用范围：This part of IEC 62220 specifies the method for the determination of the DETECTIVE QUANTUMEFFICIENCY (DQE) of DIGITAL X-RAY IMAGING DEVICES as a function of AIR KERMA and of SPATIALFREQUENCY for the working conditions in the range of the medical application as specified bythe MANUFACTURER. The intended users of this part of IEC 62220 are manufacturers and wellequipped test laboratories.This Part 1-3 is restricted to DIGITAL X-RAY IMAGING DEVICES that are used for dynamic imagingsuch as, but not exclusively, direct and indirect flat panel-detector based systems.It is not recommended to use this part of IEC 62220 for digital X-RAY IMAGE INTENSIFIER-basedsystems.NOTE 1 This negative recommendation is based on the low frequency drop, vignetting and geometrical distortionpresent in these devices which may put severe limitations on the applicability of the measurement methodsdescribed in this standard.This part of IEC 62220 is not applicable to:– DIGITAL X-RAY IMAGING DEVICES intended to be used in mammography or in dentalradiography;– COMPUTED TOMOGRAPHY; and– systems in which the X-ray field is scanned across the patient.NOTE 2 The devices noted above are excluded because they contain many parameters (for instance, beamqualities, geometry, time dependence, etc.) which differ from those important for dynamic imaging. Some of thesetechniques are treated in separate standards (IEC 62220-1 and IEC 62220-1-2).