Table 1.
Scan parameters for iNAV-3D and conventional 2D late gadolinium enhancement (LGE) methods. iNAV-3D: Image-Navigated High-Resolution 3-Dimensional, PSIR: phase sensitive inversion recovery
| Parameter | iNAV-3D LGE | 2D LGE |
|---|---|---|
| Inversion pulse | Every heart beat | Every 2nd heart beat |
| PSIR | No | Yes |
| Repetition time (ms) | 4.8 ms | 5 ms |
| Echo time (ms) | 1.5 ms | 1.8 ms |
| Flip angle | 25 | 25 |
| Parallel imaging factor | 2 | 1.5 |
| Field of view (mm3) | 320 × 320 × 120 mm | 320 × 320 × 80 mm |
| Acquired resolution (mm) | 2.0 × 2.0 × 2.0 mm3 | 1.25 × 1.25 × 10 mm3 |
| Reconstructed resolution (mm) | 1.0 × 1.0 × 1.0 mm3 | 0.62 × 0.62 × 10 mm3 |
| Nominal scan duration | 1 min 58 s | 15 s/ breath holda |
a: net duration of acquisition: 1 min 35 s, total scan duration including breath holds: 9 min 57 s