Number of Scans Identified and Removed Because of Particular Problems
| Reason for rejecting scan | Baseline PET | Follow-Up PET | ||
|---|---|---|---|---|
| Scans identified from subjects considered to be unevaluable | ||||
| Incomplete frame sequence | 2 | 3 | ||
| Input function suggestive of poor radiotracer delivery/status | 1 | 2 | ||
| Attenuation correction not applied | 0 | 1 | ||
| Abnormal input function suggestive of excessive head movement | 1 | 1 | ||
| Gross misalignment between ADD and Ki images suggestive of excessive head movement | 0 | 1 | ||
| Scans identified from baseline subjects who subsequently withdrew considered to be unevaluable | ||||
| Dynamic image not sent | 2 | |||
| Scans identified as problematic and data resent from local center | ||||
| Wrong scan contained on CD-ROM | 0 | 1 | ||
| Attenuation correction not applied | 1 | 0 | ||
| Scans not contained on CD-ROM | 2 | 2 | ||
In addition, 1 center was asked to send all datasets using the same attenuation correction method for both baseline and follow-up scans; another center was asked to send their images in native space only and not reorientated to AC–PC line.