Table III.
Percent difference in Ki due to single versus dual mode for each rat. Non-shaded values in the right most column reflect average effects of scan mode. Shaded results show additional comparisons of dual versus single in microPET P4 without one or more corrections but are not included in the global average because they are from the same rats in rows 1 and 2.
| Rat | Attenuation & Scatter Correction | Scanner | Ki Single (sec−1) | Ki Dual (sec−1) | Effect of Scan Mode (%) |
|---|---|---|---|---|---|
| 1 | all | microPET-P4 | 0.0155 | 0.0140 | 9.7 |
| 2 | all | microPET-P4 | 0.0092 | 0.0095 | −3.3 |
| 1 | attenuation only | microPET-P4 | 0.0158 | 0.0146 | 7.6 |
| 2 | attenuation only | microPET-P4 | 0.0095 | 0.0101 | −6.3 |
| 1 | none | microPET-P4 | 0.0102 | 0.0090 | 11.8 |
| 2 | none | microPET-P4 | 0.0062 | 0.0063 | −1.6 |
| 3 | none | IndyPET-II | 0.0074 | 0.0064 | 13.5 |
| 4 | none | IndyPET-II | 0.0077 | 0.0068 | 11.7 |
| 5 | none | IndyPET-II | 0.0080 | 0.0080 | 0.0 |
| 6 | none | IndyPET-II | - | 0.0071 | - |
| Average | 6.3 | ||||
| StDEV | 7.5 | ||||