BS EN 62220-1-2:2007 Medical electrical equipment - Characteristics of digital X-ray imaging devices - Determination of the detective quantum efficiency - Detectors used in mammography
This part of IEC 62220 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 Part 1-2 is restricted to DIGITAL X-RAY IMAGING DEVICES that are used for mammographic
imaging such as but not exclusively, CR systems, direct and indirect flat panel detector based
systems, scanning systems (CCD based or photon-counting). This part of IEC 62220 is not
applicable to
– DIGITAL X-RAY IMAGING DEVICES intended to be used in general radiography or in dental
radiography;
– computed tomography;
and
– devices for dynamic imaging (where series of images are acquired, as in fluoroscopic or
cardiac imaging).
NOTE The devices noted above are excluded because they contain many parameters (for instance, beam
qualities, geometry, time dependence, etc.) which differ from those important for mammography. Some of these
techniques are treated in separate standards (IEC 62220-1 and IEC 62220-1-3) as has been done for other topics,
for instance for speed and contrast, in IEC and ISO standards.
BS EN 62220-1-2:2007 history
2007BS EN 62220-1-2:2007 Medical electrical equipment - Characteristics of digital X-ray imaging devices - Determination of the detective quantum efficiency - Detectors used in mammography