Correlation of Blood to ID Blood Surrogates
| Blood surrogate | n | R2 | Slope | ρ | SEE/mean |
| Cerebellum | 170 | 0.84 | 0.89 | 0.92 | 0.06 |
| Heart | 46 | 0.84 | 0.92 | 0.92 | 0.07 |
| Aorta | 53 | 0.83 | 0.87 | 0.91 | 0.07 |
| Overall | 269 | 0.84 | 0.89 | 0.91 | 0.06 |
Correlation results of ID to sampled blood activity. Correlation parameters are R2 (coefficient of determination), slope from linear regression, Pearson ρ, and SEE/mean as a measure of coefficient of variation of regression.