FAP and neoplasm: Although the absolute 177Lu uptake at 24 and 72 h was increased in the tumor with FAP-2286, the tumor-to-kidney ratio was better for FAPI-46 at 3 h (21.0 vs. 9.6), identical at 24 h (12.7 vs. 13.1), and better for FAP-2286 at 72 h (27.3 vs. 8.18).