Table 1.
Imaging parameters of liver MR examination protocol.
| Sequence | T1 2D FFE | DWI | T2W-TSE | T1 3D TFE |
|---|---|---|---|---|
| Imaging plane | Transverse | Transverse | Transverse | Transverse |
| Field of view (mm2) | 350 × 300 | 350 × 300 | 350 × 300 | 350 × 300 |
| Matrix | 220 × 222 | 124 × 161 | 312 × 256 | 248 × 212 |
| Number of slices | 20 | 20 | 20 | 100 |
| Slice thickness (mm) | 8 | 8 | 8 | 2 |
| Repetition time (ms) | 149 | 5500 | 2160 | 2.9 |
| Echo time (ms) | 1.15 (opposed phase) 2.3 (in phase) | 83 | 75 | 1.41 |
| Flip angle (degree) | 60 | 90 | 90 | 11 |
| Echo train length/ Turbo factor | N/A | N/A | 32 | 47 |
| Number of signal averages | 1 | 1 | 1 | 1 |
| Fat suppression | N/A | Spectral fat suppression (SPAIR) | Spectral fat suppression (SPIR) | Spectral fat suppression (SPAIR) (SPAIR) |
| Total scan duration | 15.2 s | 2 m 56 s | 1 m 48 s | 14.7 s |
T1 2D FFE, T1-weighted two dimensional fast field echo; DWI, diffusion-weighted imaging; T2W-TSE, T2-weighted turbo spin-echo; T1 3D TFE, T1-weighted three dimensional turbo field echo; N/A, not applicable; SPAIR, spectral attenuated inversion recovery; SPIR, spectral pre-saturation with inversion recovery.