This document specifies the performance and some related constructional requirements of diagnostic dosimeters intended for the measurement of air kerma, air kerma length product or air kerma rate, in photon radiation fields used in medical X-ray imaging, such as radiography, radioscopy and computed tomography (CT), for X-radiation with generating potentials in the range of 20 kV to 150 kV.

This document is applicable to the performance of dosimeters with vented ionization chambers and/or semiconductor detectors as used in X-ray diagnostic imaging.