Table 1.
Suggested Protocol for Scanning to Total Knee Arthroplasty at 1.5T
| Pulse Sequence | |||||
|---|---|---|---|---|---|
| Parameters | Axial | Coronal | Sagittal | Sagittal | Sagittal |
| Acquisition Type | FSE | FSE | FSE | MAVRIC-SL | MAVRIC-SL |
| Weighting | Intermediate | Intermediate | Intermediate | Intermediate | STIR |
| Repetition Time (ms) | > 5000 | > 5000 | > 5000 | 4000–5000 | 4000–5000 |
| Echo Time (ms) | 30 | 30 | 30 | 40 | 40 |
| Fat Suppression | No | No | No | No | Inversion pulse at 150 ms |
| Echo Train Length | 16–24 | 16–24 | 16–24 | 24 | 24 |
| Receiver Bandwidth (Hz/pixel) | 488.3 | 488.3 | 488.3 | 488.3 | 488.3 |
| Flip Angle (deg) | 90 | 90 | 90 | 90 | 90 |
| Field of View (cm) | 16 × 16 | 16 × 16 | 20 × 20 | 20 × 20 | 20 × 20 |
| Acquisition Matrix | 512 × 320 | 512 × 320 | 512 × 320 | 512 × 256 | 512 × 256 |
| Slice Thickness (mm) | 3 | 4 | 2.5 | 3.6 | 3.6 |
| Section Gap (mm) | 0 | 0 | 0 | 0 | 0 |
| No. Signals Acquired | 4 | 4 | 4 | Variable | Variable |
| In-plane Frequency Direction | A to P | R to L | A to P | S to I | S to I |
| Acquisition Time | 5–8 mins | 5–8 mins | 5–8 mins | 5–7 mins | 5–7 mins |
Notes: A = Anterior, P = Posterior, R = Right, L = Left, S = Superior, I = Inferior