Table 3.
Magnetic resonance imaging protocol.
| Sequence | TR/TE (TI) (ms) | Spatial resolution (mm3) | FoV (mm3) | AT (min:s) | Measurements |
|---|---|---|---|---|---|
| MP2RAGE | 5,000/2.89 (700/2,500) | 1.0 × 1.0 × 1.2 | 256 × 240 × 176 | 8:22 | T1 map/lesion count and manual segmentation |
| T2*_M0/MT | 1.23/47 (700/2,500) | 1.6 × 1.6 × 1.6 | 256 × 240 × 160 | 5:38 (×2) | MTR/T2* maps |
| Multi-echo T2 | 5,000/9 TE1, 21 echoes | 1.1 × 1.1 ×4.0 | 256 × 240 × 160 | 3:15 | T2 map |
| MPRAGE | 2,300/2.98 (900) | 1.0 × 1.0 × 1.2 | 256 × 240 × 160 | 5:12 | Structural (segmentation) |
| 3DFLAIR | 5,000/3,948 (1,800) | 1.0 × 1.0 × 1.2 | 256 × 240 × 176 | 6:27 | Lesion count and manual segmentation |
| DIR | 10,000/218 (3,650, 450) | 1.0 × 1.0 × 1.2 | 256 × 240 × 160 | 12:52 | Lesion count and manual segmentation |
Data are presented as mean (SD) for continuous variables and count for categorical variables.
TE, echo time; TR, repetition time; TI, inversion time; FoV, field of view; AT, acquisition time.