Table 5 Image reconstruction protocol in GC-1 and GC-2.
Protocol | Parameters | One-day protocol | Two-day protocol | ||
|---|---|---|---|---|---|
GC-1 | Non-attenuation correction (NAC) | Algorithm | MLEM | MLEM | |
Iterations | 30 | 30 | |||
Regularization | OSL Green | OSL Green | |||
Alpha | 0.4 | 0.4 | |||
Beta | 0.4 | 0.4 | |||
Post filter | Butterworth | Butterworth | |||
Frequency | 0.4 | 0.4 | |||
Order | 10 | 10 | |||
CT Attenuation correction | Not included | ||||
Attenuation correction (AC) | Algorithm | MLEM | MLEM | ||
Iterations | 60 | 60 | |||
Regularization | OSL Green | OSL Green | |||
Alpha | 0.7 | 0.7 | |||
Beta | 0.3 | 0.5 | |||
Post Filter | Butterworth | Butterworth | |||
Frequency | 0.37 | 0.37 | |||
Order | 7 | 7 | |||
CT Attenuation correction | Included | ||||
GC-2 | Post filter | Butterworth | Butterworth | ||
Frequency | 0.52 | 0.40 | |||
Order | 5 | 10 | |||
Algorithm | OSEM | OSEM | |||
Iterations | 12 | 2 | |||
Subsets | 10 | 10 | |||
CT Attenuation correction | Included | ||||
