TABLE 2.
Acquisition parameters for the two different resting state-fMRI dataset: ADNI represents data acquired using a single set of imaging parameters whereas Track-TBI represents dataset acquired using various parameters from multi-sites for the cross-validation.
| ADNI | Track-TBI | |
| Sequence | ADNI2 Axial resting- state fMRI | Axial Resting State fMRI |
| TR [ms] | 3000 | 3000 – 3671 |
| TE [ms] | 30 | 30 |
| TI [ms] | N/A | N/A |
| Flip angle [degrees] | 80 | 80 |
| Matrix | 64 × 64 | (60 – 480) × (64 – 512) |
| Voxel size [mm3] | 3.3 × 3.3 × 3.3 | (2.8 – 3.4) × (2.75 – 3.4) × (1 – 3.4) |
| FOV [mm] | 212 × 206 | (64 - 512) × (62 – 497) |
| Number of axial slices | 48 | 39 – 52 |
| Number of frames | 140 | 140, 200 |
| Number of scans | 657 | 1555 |
TR, repetition time; TE, echo time; TI, inversion time; FOV, field of view.