Table 2 Suggested MRI pulse sequence protocol at 3T and (1.5T)
From: MRI for the preoperative evaluation of femoroacetabular impingement
3T (1.5T) | Coronal STIR wide FOV | Axial PD wide FOV | Sagittal PD | Axial oblique PD | Coronal PD |
|---|---|---|---|---|---|
TR/TE (ms) | 4000/19 (4000/17) | 4800/40 (4000/30) | 4000/30 (3500/26) | 4000/40 (4000/26) | 4000/32 (4000/26) |
Flip angle | 180 (180) | 180 (180) | 180 (180) | 180 (180) | 180 (180) |
ETL | 12 (7) | 12 (7) | 12 (8) | 12 (9) | 12 (7) |
RBW (kHz) | 50 (32) | 50 (32) | 50 (32) | 50 (32) | 50 (32) |
NEX | 2 (2) | 1 (2) | 2 (3) | 2 (3) | 2 (3) |
Matrix | 288 × 288 (256 × 192) | 512 × 256 (512 × 256) | 512 × 384 (512 × 384) | 512 × 320 (512 × 256) | 512 × 384 (512 × 384) |
FOV (cm) | 38 (34) | 36 (36) | 19 (20) | 19 (20) | 19 (20) |
Slice thickness (mm)/gap | 5.5/0 (5.0/0) | 5.0/0 (5.0/0) | 2.5/0 (2.5–2.8/0) | 3.0/0 (3.0/0) | 3.0 (3.0/0) |