Metrological Issues in Molecular Radiotherapy Marco D’Arienzo, Marco Capogni, Vere Smyth, Maurice Cox, Lena Johansson, Jaroslav Solc, Christophe Bobin, Hans Rabus and Leila Joulaeizadeh EPJ Web of Conferences, 77 (2014) 00022 Published online: 19 August 2014 DOI: 10.1051/epjconf/20147700022