131I Half-Lives Measured from Single-Head Acquisitions
| Anterior | Posterior | |||||
|---|---|---|---|---|---|---|
| Collimator(s) | Mean half-life (d) | SD | Difference* (%) | Mean half-life (d) | SD | Difference* (%) |
| All | 8.13 | 0.132 | 1.37 | 8.18 | 0.126 | 1.93 |
| MEGP | 8.20 | 0.123 | 2.27 | 8.15 | 0.060 | 1.58 |
| HEGP | 8.02 | 0.004 | 0.02 | 8.22 | 0.225 | 2.46 |
↵* Between calculated half-life and reference value.