Table 1 MRI sequences and parameters
Parameter | Intera Achieva Quasar Dual | Ingenia 3.0T CX | ||||||
|---|---|---|---|---|---|---|---|---|
T1WI | In/out | T2WI | DWI | T1WI | In/out | T2WI | DWI | |
Sequence | 3D TFE | GRE | 2D TSE | 2D EP | 3D TFE | GRE | 2D TSE MV | 2D EP |
Respiratory control | BH | BH | RT | FB | BH | BH | RT | FB |
Fat suppression | Yes | No | Yes | Yes | Yes | No | Yes | Yes |
TR (ms) | 3.3 | 242 | 1900 | 5000 | 3.3 | 223 | 2000 | 5000 |
TE (ms) | 1.57 | 1.2/2.4/3.6/4.8 | 80 | 63 | 1.56 | 1.15/2.35/3.55/4.75 | 80 | 63 |
Flip angle (°) | 15 | 60 | 90 | 90 | 12 | 60 | 90 | 90 |
FOV (cm) | 42 × 30 | 38 × 30 | 38 × 30 | 38 × 30 | 42 × 30 | 38 × 30 | 38 × 38 | 38 × 30 |
Matrix | 320 × 224 | 288 × 230 | 512 × 256 | 128 × 128 | 304 × 250 | 288 × 230 | 304 × 304 | 128 × 128 |
Parallel imaging factor | 1.5 | 2.2 | 2 | 2 | 1.7 | 2 | 2.5 | 2 |
Slice thickness (mm) | 4 | 5 | 5 | 6 | 4 | 5 | 5 | 6 |
Intersection gap (mm) | − 2 | 1 | 1 | 0 | − 2 | 1 | 1 | 0 |
No. of sections | 90 | 30 | 30 | 30 | 90 | 30 | 30 | 30 |
Acquisition time | 20 s | 21 s | 3 min | 1 min 45 s | 20 s | 17 s | 3 min | 1 min 45 s |
b values (mm2/s) | NA | NA | NA | 0, 200, 800 | NA | NA | NA | 0, 200, 800 |