Table 1 Acquisition protocols.
From: Comparison of SS-EPI DWI and one-minute TGSE-BLADE DWI for diagnosis of acute infarction
Parameter | SS-EPI DWI | TGSE-BLADE DWI | T2WI |
|---|---|---|---|
b value (s/mm2) | 0, 1000 | 0, 1000 | NA |
TR (ms) | 3900 | 3300, 3200* | 3540 |
TE (ms) | 63, 71* | 46, 62* | 79 |
FA (degrees) | NA | 120 | 120 |
FOV (mm) | 220 × 220 | 220 × 220 | 220 × 220 |
Matrix | 160 × 160 | 160 × 160 | 448 × 448 |
Slice thickness (mm) | 5 | 5 | 5 |
Number of slices | 22 | 22 | 22 |
Voxel size (mm3) | 1.4 × 1.4 × 5.0 | 1.4 × 1.4 × 5.0 | 0.5 × 0.5 × 5.0 |
Bandwidth (Hz/pixel) | 1202 | 520 | 189 |
NEX | 2 | 1 | 1 |
Parallel imaging (Phase Encoding × Slice Encoding) | GRAPPA 3 × 1 | GRAPPA 2 × Slice acceleration 2 | GRAPPA 3 × 1 |
Turbo factor | NA | 13 | 11 |
EPI factor | 128 | 3 | NA |
Acquisition time (s) | 52 | 59 | 51 |
