Table 2.
MRI parameters.
| Machine | Weighting | Sequence | TR | TE | Slice Thickness |
|---|---|---|---|---|---|
| Optima MR450w 1.5 T Installed in 2016, 70 cm tunnel, 32 channels, 40 cm z-axisFOV, gradient 40 mT/m SR 200 T/m/s. |
T1 pre-contrast | 3D rapid gradient echo | 9 ms | 4.2 ms | 1 mm |
| T2-FLAIR | Turbo spin echo | 7002 ms | 138 ms | 1.4 mm | |
| DWI | EPI, two b-values (0 and 1000 mm/s) | 3349 ms | 79 ms | 4 mm | |
| T1 post-contrast | 3D rapid gradient echo | 6.1 ms | 1.2 ms | 1 mm | |
| Discovery MR 750w 3 T Installed in 2012, 70 cm tunnel, 32 channels, 50 cm z-axisFOV, gradient 44 mT/m SR 200 T/m/s. |
T1 pre-contrast | 3D rapid gradient echo | 9 ms | 2.1 ms | 1 mm |
| T2-FLAIR | Turbo spin echo | 7002 ms | 118 ms | 1 mm | |
| DWI | EPI, two b-values (0 and 1000 mm/s) | 3349 ms | 62.6 ms | 3 mm | |
| T1 post-contrast | 3D rapid gradient echo | 6.1 ms | 2.1 ms | 1 mm |