Table 1.
Imaging Parameters.
| Sequence | Plane | TR (ms) | TI (ms) | TE (ms) | Matrix | Thickness (mm) | FOV (cm) | Voxel Size (µm3) | Projections | Flip Angle (°) | Bandwidth (Hz)/Pixel | ETL | NEX |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Intermediate-weighted | Sag | 3,600 | — | 32 | 384 × 384 | 1.7 | 10 | 260 × 260 × 1700 | — | 90 | 122.1 | 7 | 1 |
| Intermediate-weighted | Cor | 3,600 | — | 32 | 384 × 384 | 1.7 | 10 | 260 × 260 × 1700 | — | 90 | 122.1 | 7 | 1 |
| Intermediate-weighted | Ax | 3,600 | — | 32 | 384 × 384 | 1.7 | 10 | 260 × 260 × 1700 | — | 90 | 122.1 | 7 | 1 |
| STIR | Sag | 3,000 | 170 | 17 | 320 × 192 | 1.7 | 10 | 313 × 521 × 1700 | — | 90 | 146.3 | 2 | 1 |
| STIR | Ax | 3,000 | 170 | 17 | 320 × 192 | 1.7 | 10 | 313 × 521 × 1700 | — | 90 | 146.3 | 2 | 1 |
| PD-weighted | Sag | 3,200 | — | 8 | 320 × 256 | 1.7 | 10 | 313 × 391 × 1700 | — | 90 | 162.5 | 1 | 1 |
| PD-weighted | Ax | 3,200 | — | 8 | 320 × 256 | 1.7 | 10 | 313 × 391 × 1700 | — | 90 | 162.5 | 1 | 1 |
| T1-weighted | Sag | 700 | — | 11 | 384 × 384 | 1.7 | 10 | 260 × 260 × 1700 | — | 90 | 122.1 | 5 | 1 |
| 2D UTE, multi-echo, with fat-saturation | Sag | 475 | — | 0.012 and 4 | 384 × 384 | 1.7 | 10 | 260 × 260 × 1700 | 455 | 45 | 325.5 | — | 2 |
| 3D UTE, multi-echo, with fat-saturation | Sag | 22 | — | 0.012 and 4 | 384 × 384 | 0.31 | 12 | 260 × 260 × 260 | 44,000 | 14 | 325.5 | — | 1 |
TR = repetition time; TI = inversion time; TE = echo time; FOV = field of view; ETL = echo train length; NEX = number of excitations; STIR = short TI inversion recovery; PD = proton density; UTE = ultrashort echo time; Sag = sagittal; Cor = coronal; Ax = axial.