Table 1 The Information on Data Acquisition.
Parameters | dMRI | T1-weigted | T2-weigted |
|---|---|---|---|
Sequence | EPI | GRE-FSP | FSE-MATRIX3D |
Acquisition orientation | Axial | Sagittal | Sagittal |
TR / TE (ms) | 8277 / 67.9 | 10.1/3.4 | 3000/421.68 |
FA (degree) | 90 | 9 | Max = 160, Min = 23 |
Echo spacing (ms) | 0.8 | / | 5.02 |
ETL | 66 | 165 | 180 |
Band width (Hz/Pixel) | 1850 | 160 | 450 |
In-plane resolution (RO × PE mm2) | 1.2 × 1.2 | 0.5 × 0.5 | 0.5 × 0.5 |
Acquisition matrix (RO × PE) | 176 × 176 | 512 × 512 | 512 × 424 |
Slice thickness (mm) | 1.2 | 0.5 | 0.5 |
Number of slices | 114 | 300 | 300 |
Multi-band factor | 2 | / | / |
In-plane acceleration factor | 2 | / | / |
Partial Fourier | 6/8 | / | / |
Acceleration method | GRAPPA | uCS | uCS |
Combined Acceleration factor | 4 | 3 | 3 |
Channel combine mode | Adaptive combine | Adaptive combine | Adaptive combine |
Fat suppression | Fat Sat | Off | Off |
Intensity uniformity correction | Off | Combined field | Combined field |
Distortion correction | Off | 2D | 2D |
Image Filtering | Off | Smoothing: 5 Enhancement: 1 Edge Smoothing: 4 | Smoothing: 5 Enhancement: 3 Edge Smoothing: 3 |
k-space filtering (mode/intensity) | Standard / High | Default / Medium | Optimized / Medium |
Other | b = 0, 21 volumes (6 AP, 15 PA) b = 1000 s/mm2, 90 directions (PA) b = 2000 s/mm2, 90 directions (PA) b = 3000 s/mm2, 90 directions (PA) | TI = 1000 ms |  |
Scanning time | 45.2 min | 13.6 min | 13.7 min |
