Table 1 MR Right Heart Catheterization Pulse Sequence Parameters
From: An efficient, free-breathing protocol for MR right heart catheterization
| Â | Tradional Localizers | Multi-Slice Localizer | Localizer Phase Contrast | Diagnostic Phase Contrast | Real-Time LAX Cine | Real-Time SAX Cine | Real-Time SSFP (IFE) |
|---|---|---|---|---|---|---|---|
TR | 2.66 ms | 2.81 ms | 4.64 ms | 4.84 ms | 2.58 ms | 2.46 ms | 2.44 ms |
TE | 1.13 ms | 1.23 ms | 2.47 ms | 2.64 ms | 1.13 ms | 1.04 ms | 1.22 ms |
Matrix (Readout × Phase) | 168 × 256 | 160 × 240 | 173 × 192 | 256 × 256 | 80 × 160 | 80 × 160 | 128 × 128 |
Slice Thickness | 8.0 mm | 4.5 mm | 6.0 mm | 6.0 mm | 6.0 mm | 8.0 mm | 8.0 mm |
Flip Angle | 80° | 80° | 20° | 20° | 45° | 45° | 45° |
Acceleration Factor | 2 | 2 | 2 | 2 | 4 | 4 | 4 |
Cardiac Gating | None | None | ECG/Retro | ECG/Retro | ECG/Trigger (1.5 Beats) | ECG/Trigger (1.5 Beats) | None |
Scan Times | 10 sec | 35 sec | 23 sec | 2-3 min each | 3 sec | 35 sec | Infinite Measurements |