Table 1.
Results of partial volume effect correction for a Hoffman phantom
| GM | WM | PVC method | WM estimation | ||||
|---|---|---|---|---|---|---|---|
| Bq/ml | Recovery rate % | SD increase % | Bq/ml | Recovery rate % | SD increase % | ||
| PET-CT | |||||||
| 36378 | 65.3 | 19863 | 142.6 | Non-corrected | |||
| 55067 | 98.9 | 37.5 | 12871 | 92.4 | A-PVC | A-WME | |
| 52414 | 94.1 | 49.4 | 16600 | 119.2 | A-PVC | R-WME | |
| 51818 | 93.0 | 57.4 | 17438 | 125.2 | A-PVC | CS | |
| 50231 | 90.2 | 21.6 | 12871 | 92.4 | MG-PVC | A-WME | |
| 49628 | 89.1 | 21.5 | 16600 | 119.2 | MG-PVC | A-WME | |
| 49492 | 88.9 | 21.6 | 17438 | 125.2 | MG-PVC | CS | |
| 46177 | 82.9 | 20.4 | 21854 | 156.9 | 24.3 | M-PVC | |
| 52154 | 93.6 | 16603 | 119.2 | R-PVC | |||
| GE advance | |||||||
| 11266 | 60.6 | 6625 | 142.5 | Non-corrected | |||
| 17602 | 94.6 | 56.1 | 4345 | 93.4 | A-PVC | A-WME | |
| 16682 | 89.7 | 68.7 | 5629 | 121.0 | A-PVC | R-WME | |
| 17505 | 94.1 | 54.6 | 4481 | 96.4 | A-PVC | CS | |
| 15815 | 85.0 | 30.8 | 4345 | 93.4 | MG-PVC | A-WME | |
| 15595 | 83.8 | 29.8 | 5629 | 121.0 | MG-PVC | A-WME | |
| 15792 | 84.9 | 30.6 | 4481 | 96.4 | MG-PVC | CS | |
| 11492 | 77.9 | 29.3 | 7296 | 156.9 | 25.1 | M-PVC | |
| 16016 | 86.1 | 5907 | 121.0 | R-PVC | |||
| HRRT | |||||||
| 37205 | 80.0 | 16084 | 138.4 | Non-corrected | |||
| 49254 | 105.9 | 48.9 | 11302 | 97.2 | A-PVC | A-WME | |
| 47322 | 101.8 | 55.4 | 13633 | 117.3 | A-PVC | R-WME | |
| 48405 | 104.1 | 44.6 | 12326 | 106.0 | A-PVC | CS | |
| 44283 | 95.2 | 13.0 | 11302 | 97.2 | MG-PVC | A-WME | |
| 43989 | 94.6 | 12.7 | 13633 | 117.3 | MG-PVC | A-WME | |
| 44154 | 95.0 | 12.8 | 12326 | 106.0 | MG-PVC | CS | |
| 41506 | 89.3 | 16.6 | 16222 | 139.5 | 2.2 | M-PVC | |
| 45429 | 97.7 | 13633 | 117.3 | R-PVC | |||
The mean radioactivity values (Bq/ml) are shown for areas of GM and WM for three different PET tomographs: GE Advance (GE, Milwaukee, WI), PET-CT (DSTE, GE, Milwaukee, WI) and HRRT (CPS Inc., Knoxville, TN)). Recovery rate = Radioactivity in relation to the calculated true values of GM and WM; SD increase = Increase in standard deviation of the radioactivity values in the GM and WM regions when compared to noncorrected image when applicable.