Parameters for default and 4-minute PETRA sequences
| Default | 4-Minute | |
|---|---|---|
| TR 1 | 3.32 ms | 3.32 ms |
| TR 2 | 2250 ms | 2250 ms |
| TE | 0.07 ms | 0.07 ms |
| TI | 1300 ms | 2000 ms |
| TI 2 | 900 ms | 900 ms |
| Averages | 1 | 1 |
| Slice thickness | 0.9 mm | 0.9 mm |
| FOV | 300 × 300 | 300 × 300 |
| Matrix | 320 × 320 | 320 × 320 |
| Voxel size | 0.9 × 0.9 × 0.9 mm | 0.9 × 0.9 × 0.9 mm |
| Bandwidth | 400 kHz | 400 kHz |
| Flip angle | 6° | 6° |
| Radial views | 60,000 | 40,000 |
| Acquisition time | 5:57 minutes | 4:05 minutes |