FGFR1 and neoplasm: Tumor uptake rates of [18F]F-FGFR1 in RT-112 tumor-bearing mice at 30 min, 60 min and 120 min post-injection were 3.84 ± 0.17%ID/g, 2.60 ± 0.10%ID/g and 0.98 ± 0.06%ID/g, respectively, which were significantly higher than those in A549, SNU-16, Calu-3 and RT-112-blocked xenograft mice (P < 0.001).