Typical Acquisition and Processing Parameters for V/Q SPECT*
| Parameter | Description |
| SPECT acquisition | 3° steps over 360° |
| Acquisition time per projection | 12 s (ventilation); 8 s (perfusion) |
| Collimator | Low-energy, high resolution |
| Matrix size | 128 × 128 (64 × 64 can also be used) |
| Reconstruction | Ordered-subset expectation maximization (8 iterations, 4 subsets) |
| Postreconstruction filter | 3-dimensional Butterworth; cutoff, 0.8 cycles/cm; order, 9 |
↵* Protocol from Royal North Shore Hospital, Sydney.