Figure 2: Equivocal three-phase FCH PET/CT display (patient no. 17) showing transverse sections of dynamic frames (0-3min), (4-6min) and (6- 9min post injection), followed by whole body PET (11-14 min p.i.) and delayed scanning (40 min p.i.), all fused to the initial CT. Sequential disappearance of vascular activity (0-3 min.) and appearance of urinary activity (6-9 min.) is observed (A). Note the differential uptake evolution in the equivocal right lesion (solid line arrow, ←) compared with the neg. lesion on the left side. SUVmax evolution over time (B).