Parameter | EPI3b | EPI4b | T1w MRI (T1_3D_Tra) | T2w MRI (T2_3D_Tra) |
---|---|---|---|---|
Sequence type | SS-SE-EPIa | SS-SE-EPI | FFEb 3D | MS-SE-TSEc 3D |
Acquisition voxel size (mm3) | 3 × 3 × 4 | 3 × 3 × 4.8 | 1.2 × 1.2 × 2.4 | 1.2 × 1.2 × 2.2 |
Slice gap (mm) | 0 | 0 | -1.2 | -1.1 |
Field of view (mm3) | 400 × 400 × 100 | 400 × 400 × 202 | 520 × 298 × 250 | 520 × 298 × 250 |
TR/TE (ms) | 4811/68 | 10,392/107 | 13/4.5 | 2100/375 |
Flip angle (°) | 90–180 | 90–180 | 27 | 90–(180) |
TSE factor | – | – | – | 150 |
Water-fat shift (pix)/bandwidth (Hz) | 11.197/19.4 | 11.180/19.4 | 0.653/332.6 | 0.473/459.3 |
b-values (s/mm2) (averages) | 0 (3), 150 (5), 500 (8) | 0 (2), 200 (3), 500 (4), 800 (6) | – | – |
Fat suppression | SPAIRd | SPAIRd | No | No |
Duration (min) | 3:32 | 7:17 | 5:48 | 6:03 |