Table 1.
Parameters for T2 weighted (T2W), multiecho T2 and diffusion-weighted sequences
| Parameter | T2W TSE | GraSE multiecho | EP DWI |
| TR (ms) | 3643 | 3000 | 5129 |
| TE (ms) | 110 | 20, 40, 60, 80, 100 | 65 |
| Number of slices | 20–24 | 20–24 | 20–24 |
| FA (°) | 90 | 90 | 90 |
| Slice thickness (mm) | 2.2 | 2.2 | 2.2 |
| Field of view (mm) | 120 | 120 | 180 |
| Matrix | Acquired 220×184, recon 256 | Acquired 132×105, recon 192 | Acquired 80×70, recon 128 |
| NSA | 4 | 2 | 2 |
| Voxel size (mm/mm/mm) | 0.55/0.76/2.2 (acquired), 0.55/0.55/2.2 (recon) | 0.91/1.14/2.2 (acquired), 0.63/0.63/2.2 (recon) | 2.25/2.54/2.2 (acquired), 1.14/1.41/2.2 (recon) |
| SENSE factor | 1.5 | 2 | 2 |
| Scan time (min:s) | 4:48×3 | 2:24 | 3:20 |
| Other | TSE factor 13 | TSE factor 5 | b=0, 100, 300, 500, 800 s mm−2 |
EP DWI, echo planar diffusion tensor imaging; FA, flip angle; GraSE, gradient spin echo; NSA, number of signal averages; recon, reconstructed; SENSE, sensitivity encoding; TE, echo time; TR, repetition time; TSE, turbo spin echo.