Table 3. Biodistribution as Percent of Injected Dose Per Gram (%ID/g) of Radioactivity in Tissues of 9L Tumor-Bearing Fischer Rats Following Intravenous Administration of [18F]5a.
| tissue | 4.5 min | 12.5 min | 52.5 min |
|---|---|---|---|
| liver | 1.36 ± 0.14 | 0.97 ± 0.09 | 0.62 ± 0.05 |
| heart | 1.42 ± 0.10 | 0.98 ± 0.12 | 0.67 ± 0.08 |
| lung | 0.84 ± 0.08 | 0.64 ± 0.06 | 0.59 ± 0.11 |
| muscle | 0.56 ± 0.15 | 0.61 ± 0.12 | 0.68 ± 0.12 |
| brain | 0.39 ± 0.03* | 0.43 ± 0.04* | 0.46 ± 0.05* |
| tumor | 1.00 ± 0.22* | 1.20 ± 0.43* | 1.11 ± 0.40* |
| bone | 0.68 ± 0.23 | 0.75 ± 0.16 | 0.80 ± 0.09 |
| spine | 0.80 ± 0.26 | 0.75 ± 0.11 | 0.75 ± 0.15 |
| T/N | 2.6 | 2.8 | 2.4 |
Data are reported as mean percent dose per gram ± standard deviation (n = 4) at each time point. p-Values represent comparisons of uptake in the 9L tumor and normal brain using two-tailed paired t-tests. p < 0.05 is considered statistically significant. *p < 0.05.
T/N denotes tumor to brain ratio.