Table 2 Scan parameters of the short MRI surveillance (SMS) protocol on 1.5-T systems
Sequence | Matrix size | Slice thickness (mm) | Gap (mm) | Repetition time (ms) | Echo time (ms) | Flip angle (°) | Duration (min:s) |
|---|---|---|---|---|---|---|---|
Axial, T1-weighted 3D gradient-echo in-out phase | 300 × 260 | 4 | 0 | 6.2 | 2.1/4.2 | 12 | 0:16 |
Axial, T2-weighted fast spin-echo with fat saturation | 320 × 320 | 6 | 0.5 | Dependent on triggering | 93.8 | 160 | 3:42 (dependent on respiratory frequency) |
Axial, echo-planar diffusion-weighted (b = 50, 100, and 800 s/mm2) | 120 × 150 | 6 | 0.6 | Dependent on triggering | 60.1 | 90 | 2:34 (dependent of respiratory frequency) |