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Operator-caused variation in basic characteristics derived from the reference region masks.
| Intra-class correlation coefficient | ||||
|---|---|---|---|---|
| Tracer | Spatial overlap (%) | Reference region volume | Reference TAC AUC | Outcome measure |
| [11C]carfentanil | 22 | 83 | 61 | 75 |
| [11C]raclopride | 41 | 79 | 80 | 97 |
| [11C]MADAM | 18 | 46 | 58 | 76 |
| [11C]PiB | 14 | 74 | 95 | 95 |
TAC, time-activity curve; AUC, area under curve.
