Table 1 MR sequence parameters
Parameter | T2-weighted imaging | f-DWI | z-DWI |
|---|---|---|---|
Sequence | TSE | SS-EPI | zoomed SS-EPI |
Field of view (mm2) | 200 × 200 | 380 × 280 | 190 × 109 |
Scan matrix | 320 × 256 | 178 × 132 | 100 × 56 |
Voxel size (mm3) | 0.6 × 0.6 × 3.5 | 2.1 × 2.1 × 3.0 | 1.9 × 1.9 × 3.0 |
PE Dir. | Left- > Right | Anterior- > Posterior | Left- > Right |
Echo time (ms) | 101 | 79 | 76 |
Repetition time (ms) | 6000 | 4200 | 3800 |
Bandwidth (Hz/px) | 200 | 1872 | 1612 |
b-value (s/mm2) | NA | 50, 1000, 1500 | |
NEX | 2 | 1, 3, 6 | |
Fat suppression | NA | FatSat | |
Acceleration factor | 2 (GRAPPA) | 2 (GRAPPA) | NA |
Acquisition time (min) | 2:08 | 3:05 | 2:37 |