Table 1.
Acquisition parameters
| DWI | T1 MPRAGE | |||
|---|---|---|---|---|
| Scanner A | Scanner B | Scanner A | Scanner B | |
| TR/TE (ms) | 4900/70 | 4900/70 | 2400/2.7 | 2300/2.32 |
| FOV (mm) | 230 × 230 | 230 × 230 | 240 × 240 | 240 × 240 |
| Matrix size | 128 × 128 | 128 × 128 | 256 × 256 | 256 × 256 |
| Resolution (mm) | 1.8 × 1.8 | 1.8 × 1.8 | 0.9 × 0.9 | 0.9 × 0.9 |
| Slice thickness (mm) | 1.8 | 1.8 | 0.9 | 0.9 |
| Acquisition time (min) | 11.07 | 10.56 | 5.08 | 6.25 |
| Gradient direction | 64 | 64 | ||
| Maximal gradient strength (mT/m) | 100 | 80 | ||
| Flip angle (°) | 90 | 90 | ||
| Acceleration factor | 2 | 2 | ||
| Multiband factor | 2 | 2 | ||
FOV, field of view; TE, echo time; TR, repetition time