TABLE 1
Correlation Between Approximation 
Deduced from Single Measurement After 24, 48, 72, 96, 120, and 144 Hours and Actual Time Integral 
| Pearson correlation coefficient r | ||||||
| Tissue | 24 h | 48 h | 72 h | 96 h | 120 h | 144 h |
| Kidneys | 0.73 | 0.84 | 0.93 | 0.98 | 0.99 | 0.98 |
| Liver | 0.67 | 0.84 | 0.93 | 0.98 | 0.99 | 0.99 |
| Spleen | 0.55 | 0.77 | 0.89 | 0.97 | 0.99 | 0.99 |
| NET | 0.63 | 0.80 | 0.92 | 0.97 | 0.99 | 0.99 |