Table 2.
Quantitative validation using the RSD anthropomorphic striatal brain phantom
| Region | True kBq ml−1 | Measured kBq ml−1 | Recovery coefficient | Calculated kBq ml−1 | Difference (%) |
|---|---|---|---|---|---|
| Background | 40.2 | 41.1 | – | 41.1 | +2.2 |
| Cold lesion | 0 | 26.5 | – | – | – |
| Lesion 1 | 109 | 52.6 | 0.5 | 105.2 | –3.5 |
| Lesion 2 | 164 | 79.2 | 0.5 | 158.4 | –3.4 |
| Lesion 3 | 218 | 110.1 | 0.5 | 220.0 | +0.9 |
The true activity concentrations are compared with calculated mean concentrations both with and without corrections for partial volume effects, for the background and lesions of varying activity ratios. The differences between the true and calculated concentrations, when all corrections are taken into account, are displayed as a percentage of the true values.