Table 1. Acquisition parameters.
| Device scan parameter | SIGNA Horizon LX | Achieva A-series | |
|---|---|---|---|
| Phased array coil | Body coil | ||
| Dimension | 2 | 3 | 2 |
| Sequence | Fast SPGR | FFE, e-THRIVE | FFE of multislice |
| Fat suppression | CHESS | SPAIR | ProSet |
| Echo time (ms) | 1.3 | 2.3 | 5.1 |
| Repetition time (ms) | 148 | 4.6 | 126 |
| Flip angle (°) | 70 | 10 | 80 |
| Number of excitations | 1 | 1 | 1 |
| k-space trajectory | Sequential | Linear | Linear |
| Band width (Hz/pixel) | 325.5 | 360.8 | 313.8 |
| Field of view (mm) | 430 | 370 | 420 |
| Matrix (frequency × phase) | 256×160 | 240×153 | 256×160 |
| Scan percentage (%) | 100 | 79.8 | 62.5 |
| Phase field of view (%) | 75 | 80 | 100 |
| Slice thickness (mm) | 6.5 | 4.0 | 6.5 |
| Slice gap (mm) | 3.5 | 0 | 3.5 |
| Slice scan order | Slice number | – | Interleaved |
| Slice number | 20 | 40 | 7 |
| Respiration | Breath hold | Breath hold | Breath hold |
| Scan time (s) | 10.0 | 14.3 | 20.7 |
SPGR, spoiled gradient recalled acquisition of steady state; FFE, fast field echo; e-THRIVE, enhanced-T1 high resolution isotropic volume excitation; CHESS, chemical shift saturation; SPAIR, spectral attenuated with inversion recovery; ProSet, principle of selective excitation technique.