Table 2 Parameters of diffusion tensor imaging and T2-weighted sequences
Diffusion tensor imaging | T2-weighted sequences | |||
|---|---|---|---|---|
Scanner | Prismafit | TimTrio | Prismafit | TimTrio |
Repetition time (ms) | 4,000 | 4,000 | 6,969 | 8,150 |
Echo time (ms) | 87 | 92.8 | 54 | 54 |
Field of view | 160 × 160 mm2 | 160 × 160 mm2 | 140 × 140 mm2 | 160 × 160 mm2 |
Matrix | 128 × 128 | 128 × 128 | 512 × 358 | 512 × 333 |
Slice thickness (mm) | 4.0 | 4.0 | 3.5 | 3.5 |
Number of slices | 18 | 18 | 35 | 41 |
Slice gap (mm) | 0.4 | 1.2 | 0.35 | 0.35 |
Number of averages | 3 | 3 | 3 | 2 |
Parallel imaging | GRAPPA | GRAPPA | GRAPPA | GRAPPA |
Acceleration factor | 2 | 3 | 2 | 2 |
Acquisition time (min:s) | 4:34 | 4:32 | 04:22 | 5:29 |
Fat saturation | SPAIR | SPAIR | Spectral | Spectral |
b value | 0, 1,000 s/mm2 | 0, 1,000 s/mm2 | − | − |
Diffusion gradients | 20 | 20 | − | − |