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 |