DIN 6868-14
DIN 6868-14 Image quality assurance in diagnostic X-ray departments - Part 14: RöV constancy testing of X-ray installations for digital mammography
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2015
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2015