Harmonisation of imaging dosimetry in clinical practice: practical approaches and guidance from the ESR EuroSafe Imaging initiative oleh Eliseo Vano, Guy Frija, Wolfram Stiller, Efstathios Efstathopoulos, Claudio Granata, Reinhard Loose, Graciano Paulo, Dean Pekarovic, Johan Sjöberg, Lluís Donoso-Bach, on behalf of the European Society of Radiology (ESR)