TBR of PSMA tracers. (A) Sagittal section of PSMA image with SCG and background (Bg) volumes of interest. (B) Graph showing that TBR (SCG/Bg) 60–120 min after injection did not significantly differ among groups (F4,10 = 2.95, P = 0.0756). (C) TBR analyzed for four 30-min frames. *TBE significantly higher for 18F-JK-PSMA-7 than for 68Ga-PSMA-11 (F4,40 = 5.97, P = 0.0102, for factor “tracer,” post hoc P < 0.05). #TBR significantly higher for 18F-JK-PSMA-7 than for 18F-JK-PSMA-8 or 68Ga-PSMA-11 (P < 0.05). TBR of 18F-JK-PSMA-7 and 18F-PSMA-1007 increased significantly over time (F3,30 = 9.12, P = 0.0002, for factor “frame”). †For 18F-JK-PSMA-7, frame 4 was significantly different from frames 1 and 2 (P < 0.05). ‡For 18F-PSMA-1007, frame 4 was significantly different from frame 1 (P < 0.05).