Table 1.
Characteristics of different cine acquisition strategies.
| Method | #stacks × #slices (× overlaps) | Spatial resolution (mm) | Temporal resolution (ms) | Myocardium SNR (mean ± SD) | Blood-to-myocardium CNR (mean ± SD) | Total scan time (s) | % time saving |
|---|---|---|---|---|---|---|---|
| CONV | 16 2D slices | 1.8 × 1.8 × 8 | 27 | 29 ± 7 | 69 ± 14 | 270 | — |
| 2-SA | 2 × 14 × 4 | 1.8 × 1.8 × 7 | 40 | 32 ± 8 | 50 ± 21 | 48 | 82% |
| 1-SA | 1 × 20 | 1.8 × 1.8 × 7 | 40 | 29 ± 9 | 37 ± 15 | 20 | 93% |
| 2-AXIAL | 2 × 34 × 8 | 2.5 × 2.5 × 2.8 | 40 | 36 ± 11 | 15 ± 7 | 48 | 82% |
| 1-AXIAL | 1 × 46 | 2.5 × 2.5 × 2.8 | 40 | 33 ± 8 | 12 ± 3 | 21 | 92% |
Abbreviations: CONV: conventional 2D cine acquisition; 2-SA: 3D-cine acquisition of two overlapping slabs in the short-axis (SA) direction; 1-SA: 3D-cine acquisition of one thick slab in the SA direction; 2-AXIAL: 3D-cine acquisition of two overlapping slabs in the axial direction with semi-isotropic resolution; 1-AXIAL: 3D-cine acquisition of one thick slab in the axial direction. Shown scan times include recovery time inbetween repeated breath-holds. CNR: contrast-to-noise ratio; SNR: signal-to-noise ratio.