Parameter | 3D DIR | 2D FLAIR | 2D T1 SE | 3D T1 TSE |
---|---|---|---|---|
TR (ms) | 5500 | 11,000 | 600–700 | 400 |
TE (ms) | 251 | 125 | 10 | 26 |
TI (ms) | 625–2600 | 2800 | N/A | N/A |
Echo-train length | 173 | 31 | N/A | 30 |
No. of sections/slab | 300 | 31 | 36 | 267 |
Section thickness (mm) | 1.3 | 5 | 4 | 1.2 (reformat 4) |
Matrix size | 208 × 208 | 276 × 126 | 232 × 165 | 256 × 215 |
Voxel size (mm) | 1.2 × 1.2 × 1.3 | 0.85 × 1.42 × 5 | 1 × 1.10 × 4 | 1 × 1.10 × 1.2 (reformat 1 × 1.10 × 4) |
FOV (mm) | 250 × 250 | 230 × 176 | 230 × 182 | 250 × 237 |
Acquisition plane | Sagittal | Axial | Axial | Sagittal |
Acquisition time | 6 min 30 sec | 2 min 56 sec | 3 min 30 sec | 5 min 30 sec |
Note:—N/A indicates not applicable; No. of sections, number of sections acquired; reformat, 4-mm-thick axial reformatted views of the 3D T1 TSE sequence; 2D, T1 SE images and 4-mm-thick axial reformatted views of the 3D T1 TSE sequence with the same voxel size.