Field strength | T1 mapping | T2 mapping* | ||||
---|---|---|---|---|---|---|
1.5 T | 3 T | 7 T | 1.5 T | 3 T | 7 T | |
Number of slices | 11 | 11 | 11 | 5 | 5 | 5 |
Number of inversions | 11 | 11 | 11 | 32 | 32 | 32 |
Voxel size (mm) | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
Field of view (mm) | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 | 128 × 128 |
Slice thickness (mm) | 5 | 5 | 5 | 5 | 5 | 5 |
Inversion time spacing (ms) | 315 | 315 | 907 | – | – | – |
Repetition time (ms) | 10,000 | 10,000 | 10,000 | 3000 | 3000 | 7800 |
Echo time (ms) | 7.8 | 7.8 | 4.33 | 20–950 | 20–950 | 30–960 |
Flip angle | 15° | 15° | 15° | 90° | 90° | 90° |
EPI frequency encoding bandwidth (Hz) | 614.6 | 614.6 | 1179 | – | – | – |
Readout bandwidth (Hz/pixel) | 77.1 | 77.1 | 144.2 | 227 | 227 | 208 |
EPI factor | 5 | 5 | 5 | – | – | – |
Parallel reduction factor in-plane | 2 | 2 | 2 | 2 | 2 | 2 |
Scan duration (s) | 220 | 220 | 220 | 252 | 168 | 632 |