Table 1.
Acquisition parameters
| TR (ms) | TI (ms) | Gap (ms) | TE (ms) | echo spacing (ms) | flip angle (°) | GRAPPA | |
|---|---|---|---|---|---|---|---|
| T1 | 3100 | 1500 | na | 3.5 | na | 4 | 3 |
| PD | 2160 | na | na | 3.5 | na | 4 | 3 |
| T2* | 3700 | na | na | 16 | na | 4 | 3 |
| GE-EPI | 2400 | na | 1200 | 22.8 | 0.7 | 90 | 3 |
| 3D GRASE | 2000 | na | 310 | 29.2 | 0.7 | 90; 180 | na |
| TOF | 25 | na | na | 3.3 | na | 22 | 2 |
| SWI | 28 | na | na | 14.4 | na | 15 | 2 |
| MB | Matrix size | slices | Voxel resolution | averages | TA (min) | ||
| T1 | na | 384 × 384 | 256 | 0.6 mm | 2 | 14 | |
| PD | na | 384 × 384 | 256 | 0.6 mm | 1 | 5 | |
| T2* | na | 384 × 384 | 256 | 0.6 mm | 1 | 8 | |
| GE-EPI | 2 | 232 × 256 | 36 | 0.8 mm | na | 5 per run | |
| 3D GRASE | na | 28 × 250 | 16 | 0.8 mm | na | 4 per run | |
| TOF | na | 452 × 576 | 80 | 0.4 mm | 1 | 6 | |
| SWI | na | 432 × 576 | 80 | 0.4 mm | 2 | 12 |
Acquisition parameters for all acquired datasets. TR = repetition time; TI = inversion time; gap = silence between acquisitions during which sound is presented, computed as TR – acquisition time of one volume; TE = echo time; GRAPPA = generalized autocalibrating partially parallel acquisition; MB = multiband; TA = acquisition time of the dataset. Voxel resolution was isotropic for all datasets.