DIN EN 62220-1-3:2011-04

This part of IEC 62220 specifies the measurement procedure 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. The standard is restricted to digital X-ray imaging devices that are used for dynamic imaging such as, but not exclusively, direct and indirect flat panel-detector based systems. There is growing consensus in the scientific world that the DQE is the most suitable parameter for describing the imaging performance of an X-ray imaging device. The DQE describes the ability of the imaging device to preserve the signal-to-noise ratio from the radiation field to the resulting digital image data. Since in X-ray imaging, the noise in the radiation field is intimately coupled to the dose, DQE values can also be considered to describe the dose efficiency of a given digital X-ray imaging device. The DQE is already widely used by manufacturers to describe the performance of digital X-ray imaging devices. The specification of the DQE is also required by regulatory agencies (such as the Food and Drug Administration, FDA) for admission procedures. The International Standard has been prepared by IEC/SC 62B "Diagnostic imaging equipment", with the German collaboration of Joint Committee NA 080-00-16 GA "Bildgebende Systeme" ("Imaging systems") of NAR/DKE. The Committee responsible for this standard is Joint Committee NA 080-00-16 GA "Bildgebende Systeme" ("Imaging systems") of NAR/DKE.