[1] Hosp Univ Penn, Dept Radiol, 3400 Spruce St, Philadelphia, PA 19104 USA
[2] Rigshosp, Dept Clin Physiol Nucl Med & PET, KF-4012,Blegdamsvej 9, DK-2100 Copenhagen, Denmark
[3] Rigshosp, Cluster Mol Imaging, KF-4012,Blegdamsvej 9, DK-2100 Copenhagen, Denmark
[4] Univ Copenhagen, KF-4012,Blegdamsvej 9, DK-2100 Copenhagen, Denmark
[5] Univ Hosp Geneva, Div Nucl Med & Mol Imaging, CH-1211 Geneva, Switzerland