DIN 6855-1 E:2008-04 Constancy testing of nuclear medical measuring systems - Part 1: Radiation counting systems for measurements in vivo and in vitro (IEC/TR 61948-1:2001, modified)
2021DIN 6855-1:2021 Constancy testing of nuclear medical measuring systems - Part 1: Radiation counting systems for measurements in vivo and in vitro
2009DIN 6855-1:2009 Constancy testing of nuclear medical measuring systems - Part 1: Radiation counting systems for measurements in vivo and in vitro (IEC/TR 61948-1:2001, modified)
1992DIN 6855-1:1992 Quality control of nuclear medicine instruments; radiation counting systems for measurements in vivo and in vitro