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Table 2 CMR parameters for 2D and 4D velocity acquisition scans
| 2D velocity acquisition | 4D velocity acquisition | |
|---|---|---|
| Field of view (mm) | 150 x 300 | 200 x 300 |
| Acquired voxel size (mm) | 2.3 x 2.3 x 7 | 2.4 x 2.5 x 2.5 |
| Reconstructed voxel size (mm) | 1.2 x 1.2 x 7 | 1.5 x 1.5 x 2.3 |
| Number of slices | 1 | 25-40 |
| Cardiac gating | Retrospective | Retrospective |
| Respiratory motion | Non-gated | Non-gated |
| Free breathing | Free breathing | |
| NSA | 2 | 1 |
| TR(ms)/TE(ms) | 5/3 | 3.2 /1.9 |
| Flip angle (°) | 10 | 5 |
| SENSE | No | 2 |
| Reconstructed cardiac phases | 35-40 | 22-25 |
| VEC (cm/s) | 60-100 (venous vessels) 200–400 (arterial vessels) | 150-400 |
