Table 2.
Main acquisition parameters for each MRI sequence.
| Image type | Pulse sequence | Voxel size (mm) | Scan plane | Scan mode | FOV (mm) [freq. × phase] | Num slices | TR (ms) | TE (ms) | Excite/Refocus angle (deg) | Band-width (Hz/px) | Acceleration type and amount | Time |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| T1w | MPRAGE | 0.98/0.98/1.00 | Ax/Sag | 3D | 250 × 250 | 176 | 1,900 | 2.47 | 9 | 170 | GRAPPA 2 | 4:26 |
| T2-FLAIR | FLAIR TSE | 0.94/0.94/4.00 | Ax | 2D | 240 × 240 | 32 | 9,000 | 100 | 90/130 | 287 | N/A | 5:06 |
| PD/T2w | Dual Echo TSE | 0.98/0.98/3.00 | Ax | 2D | 250 × 187.5 | 54 | 4,500 | 11/101 | 90/150 | 250 | N/A | 3:45 |
| HARDI | SE MB-EPI | 2.00/2.00/2.00 | Ax | 2D | 212 × 204 | 80 | 3,284 | 89.4 | 90/177 | 1,814 | MB 4 | 3:17 (×2) |
| Fieldmap | SE MB-EPI | 2.00/2.00/2.00 | Ax | 2D | 208 × 180 | 72 | 10,170 | 86.6 | 90/180 | 2,290 | MB 1 | 0:41 (×2) |
| rs-fMRI | GE MB-EPI | 2.20/2.20/2.20 | Ax | 2D | 220 × 171.6 | 80 | 1,000 | 38.6 | 61 | 2,272 | MB 8 | 7:12 |
| MWI | mGRASE | 1.75/1.75/5.00 | Ax | 3D | 224 × 168 | 22 | 1,500 | 10:10:320 | 90/180 | 1,260 | N/A | 16:53 |
| pCASL | pCASL MB-EPI | 3.44/3.44/4.50 | Ax | 2D | 220 × 220 | 30 | 3,500 | 17 | 90 | 2,790 | MB 6 | 4:47 |
| R/QSM | MEGE | 1.33/1.33/1.33 | Ax | 3D | 256 × 192 | 96 | 53 | 6:10:46 | 10 | 190 | N/A | 9:34 |
Additional details (e.g., matrix dimensions, inversion time, phase oversampling, refocusing flip angle, echo spacing, partial Fourier ratio, number of diffusion-encoding directions, and b-values, number of volumes, etc.) are provided in the text describing each sequence if/when appropriate. Some of the parameters for the T1w, T2-FLAIR, and PD/T2w sequences have been previously reported (Marrie et al., 2021a). Ax, Axial; EPI, Echo-Planar Imaging; FOV, Field Of View; GE, Gradient Echo; MB, Multiband; MEGE, Multi-Echo Gradient Echo; mGRASE, multi-echo gradient and spin echo; Sag, Sagittal; SE, Spin Echo; TSE, Turbo Spin Echo.