Comparison of Acquisition and Processing Parameters Between FASpecT and Standard SPECT for Blood Pool Imaging
| Parameter | FASpecT/CT protocol | Standard SPECT/CT protocol |
| SPECT acquisition | 30° steps and total angular range of 360°with dual-head SPECT/CT camera | 3°–6° steps and total angular range of 360° with dual-head SPECT/CT camera |
| Acquisition time per projection | 30 s | 20–30 s |
| Total imaging time required | 3 min 20 s | 22–65 min |
| Number of steps | 6 | 60 |
| Total images acquired | 12 | 60–120 |
| Matrix size | 128 × 128 | 64 × 64 or 128 × 128 |
| Reconstruction | OSEM (2 iterations,10 subsets) | Filtered backprojection or OSEM |
| Postreconstruction filter | Butterworth: critical frequency, 0.48; power, 10 | Butterworth with varying parameters |