Table 2 Percentage error in the quantification of the activity in VOI_outside and of the activity concentration in VOI_inside for the cylinder phantom scan reconstructed with GE-OSEM, Q.Clear and Q.ClearRDP for different numbers of iterations and 1 subset
From: Quantitative 177Lu SPECT/CT imaging for personalized dosimetry using a ring-shaped CZT-based camera
Algorithm | Metric | 12i1s | 24i1s | 48i1s | 96i1s | 192i1s | 288i1s | 576i1s |
|---|---|---|---|---|---|---|---|---|
GE-OSEM | Error VOI_outside [%] | − 1.8 | − 1.8 | − 1.4 | − 1.0 | − 1.1 | − 1.2 | − 1.2 |
Error VOI_inside [%] | 3.8 | − 4.0 | − 8.5 | − 9.0 | − 7.8 | − 7.6 | − 7.6 | |
Q.Clear | Error VOI_outside [%] | − 1.8 | − 1.8 | − 1.6 | − 1.4 | − 1.2 | − 1.2 | − 0.6 |
Error VOI_inside [%] | 4.8 | − 1.7 | − 6.8 | − 8.8 | − 8.8 | − 8.7 | − 7.9 | |
Q.ClearRDP | Error VOI_outside [%] | − 1.9 | − 1.8 | − 1.8 | − 1.6 | − 1.4 | − 1.5 | − 0.8 |
Error VOI_inside [%] | 4.8 | − 1.6 | − 6.8 | − 8.9 | − 9.1 | − 9.1 | − 8.3 |