Table 1 Imaging parameters used for UO-MRI scan and for the high-resolution 7 T MRI scan
From: Reliability of tibiofemoral contact area and centroid location in upright, open MRI
0.5 T UO-MRI | 7 T MRI | |
|---|---|---|
Pulse sequence | 3D DESS | 2D multi-slice RARE |
Repetition time (ms) | 16 | 2200 |
Echo time (ms) | 6 | 8.4 |
Field of view (cm) | 22 × 22 × 16 | 6 × 6 |
Acquisition matrix size | 256 × 256 × 38 (zero filled to 256 × 256 × 64)a | 256 × 256, 50 slices |
Slice thickness (μm) | 2500 | 35.0 |
Slice gap (μm) | 0 | 0 |
Voxel dimensions (μm) | 859 × 859 × 2500 | 23.4 × 23.4 × 35.0 |
Flip angle (°) | 30 | 180 |
Bandwidth (Hz/pixel) | 146.9 | 318.4 |
Total scan time (min) | 3 min 30s | 28 min 10s |