Table 1. The imaging parameters for MRE-MRI, T1WI, and T2WI sequences.
| Parameter | MRE imaging | Coronal T2WI | Axial T2WI | Axial T1WI |
|---|---|---|---|---|
| Repetition time (ms) | 1,600 | 1,000 | 1,650 | 150 |
| Echo time (ms) | 54.2 | 68 | 26 | 1.4/2 |
| Flip angle (degrees) | 180 | 150 | 111 | 75 |
| Section thickness (mm) | 3.6 | 3 | 5 | 5 |
| Matrix# | 96×96 | 320×256 | 320×256 | 256×205 |
| Field of view* (mm) | 400×400 | 452×452 | 378×276 | 438×285 |
| Acquisition time (s) | 1 min 8 s | 27 s | 1 min 7 s | 33 s |
| MEG (Hz) | 80 | – | – | – |
| Direction of scan | Coronal/axial | Coronal | Axial | Axial |
| Breath-holding | Yes | Yes | Yes | Yes |
Matrix# indicates the number of pixel in frequency coding direction × the number of pixel in phase coding direction. Field of view* indicates the image actual size in frequency coding direction × the image actual size in phase coding direction. MRE, magnetic resonance elastography; MRI, magnetic resonance imaging; T1WI, T1 weighted imaging; T2WI, T2 weighted imaging; MEG, motion encoding gradient.