Table 2.
Hardware and acquisition parameters for HCP-YA, HCP-D, BANDA and relevant CHRD projects.
| HCP-YA | HCP-D | BANDA | CRHD-AA | CRHD-DT | CRHD-DMS | |
|---|---|---|---|---|---|---|
| Number of MRI acquisition sites | 1 | 4 | 1 | 1 | 1 | 1 |
| Scanner | Siemens Connectom 3T | Siemens Prisma 3T | Siemens Prisma 3T | Siemens Prisma 3T | Siemens Prisma 3T | GE Discovery MR750 3T |
| Head coil elements | 32 | 32 | 64 (52 used) | 64 (52 used) | 32 | 32 |
| Max. gradient strength (mT/m) | 100 | 80 | 80 | 80 | 80 | 50 |
| Structural images | ||||||
| Resolution(mm) | .7×.7×.7 | .8×.8×.8 | .8×.8×.8 | .8×.8×.8 | .8×.8×.8 | .8×.8×.8 |
| FoV (mm) | 244 × 244 × 180 | 256 × 240 × 167 | 256 × 240 × 167 | 256 × 240 × 167 | 256 × 240 × 167 | 256 × 256 × 184 |
| T1w | ||||||
| TE (ms) | 2.14 | 1.81/3.6/5.39/7.18 | 2.18 | 2.22 | 1.81/3.6/5.39/7.18 | 3.548 |
| TR (ms) | 2400 | 2500 | 2400 | 2400 | 2500 | 2840 |
| TI (ms) | 1000 | 1000 | 1040 | 1000 | 1000 | 1060 |
| Partial Fourier | 6/8 | slice 6/8 | ||||
| Slice oversampling (%) | 0 | 7.7 | 23.1 | 23.1 | 7.7 | 0 |
| Max. vNav reacquisition | – | 30 | 24 | – | 30 | PROMO |
| Bandwidth (Hz/px) | 210 | 740 | 220 | 220 | 740 | 122 |
| Parallel imaging | 2 | 2 | 2 | 2 | 2 | 2 × 1.25 |
| Flip angle | 8 | 8 | 8 | 8 | 8 | 8 |
| Fat suppr. | water excitation | water excitation | water excitation | water excitation | water excitation | – |
| T2w | ||||||
| TE (ms) | 565 | 564 | 564 | 563 | 564 | ~75 (subject-specific) |
| TR (ms) | 3200 | 3200 | 3200 | 3200 | 3200 | 2500 |
| Slice oversampling (%) | 0 | 7.7 | 0 | 0 | 7.7 | 0 |
| Max. vNav reacquisition | – | 25 | 18 | 25 | PROMO | |
| Bandwidth (Hz/Px) | 744 | 744 | 744 | 744 | 744 | 488 |
| Parallel imaging | 2 | 2 | 2 | 2 | 2 | 1.9 × 1.9 |
| EPI | ||||||
| PE direction | LR/RL | AP/PA | AP/PA | AP/PA | AP/PA | AP/PA |
| dMRI | ||||||
| b-values (s/mm2) | 1000/2000/3000 | 1500/3000 | 1500/3000 | 1500/3000 | 1500/3000 | 1500/3000 |
| Diffusion directions by shell | 89/90/91 | 92/93 | 92/93 | 92/93 | 92/93 | 74/76 |
| Multiband factor | 3 | 4 | 4 | 4 | 4 | 4 |
| TR (ms) | 5520 | 3230 | 3230 | 3230 | 3230 | 3200 |
| TE (ms) | 89.5 | 89.2 | 89.2 | 89.2 | 89.2 | 80 |
| Resolution (mm) | 1.25 × 1.25 × 1.25 | 1.5 × 1.5 × 1.5 | 1.5 × 1.5 × 1.5 | 1.5 × 1.5 × 1 × 5 | 1.5 × 1.5 × 1.5 | 1.5 × 1.5 × 1.5 |
| fMRI | ||||||
| TR (ms) | 720 | 800 | 800 | 800 | 800 | 710 |
| TE (ms) | 33.1 | 37 | 37 | 37 | 37 | 30 |
| Multiband factor | 8 | 8 | 8 | 8 | 8 | 6 |
| Resolution(mm) | 2 × 2 × 2 | 2 × 2 × 2 | 2 × 2 × 2 | 2 × 2 × 2 | 2 × 2 × 2 | 2.4 × 2.4 × 2.4 |