Radiolabeled J591 imaging. Left panels: Anterior (a) and posterior (b) images of pretreatment bony metastases on 99mTc-MDP bone scan. Right panels: Anterior (c) and posterior (d) total body images obtained via dual-head gamma camera of sites of uptake 7 days after 177Lu-J591 administration. (note, antibody is partly cleared via the liver resulting in nonspecific 177Lu localization).