Table 1. MRI scan parameters.
T2 weighted axial TSE | T2 weighted sagittal TSE | T2 weighted oblique TSE | T1 weighted axial TSE | T1 weighted fat saturated | Dynamic scan | |
TE (ms) | 100 | 100 | 100 | 18 | 18 | 1.8 |
TR (ms) | >3300 | >3300 | 5362 | 500–600 | 621 | 3.7 |
FOV | 375–450 | 240–300 | 240 | 375–450 | 240–320 | 280–320 |
RFOV (%) | 70–75 | 100 | 91 | 70 | 100 | 100 |
Slice thickness (mm) | 6 | 4 | 3 | 6 | 5 | 8 |
Slice gap (mm) | 0.6–1 | 0.4–1 | 0.3 | 0.6–1 | 0.5 | –4 |
Number of slices | 32 | 25–30 | 24–30 | 32 | 20 | 40 |
NSA | 6 | 6 | 6 | 3 | 3 | 6 |
Matrix | 294 × 512 | 256–282 × 512 | 205 × 256 | 320 × 512 | 205 × 512 | 166 × 256 |
Turbo factor | 15 | 14–15 | 16 | 3–4 | 3 | 60 |
Flip angle (degrees) | 90 | 90 | 90 | 90 | 90 | 10 |
Fat saturation | None | None | None | None | SPIR | SPIR |
Number of dynamics | 1 | 1 | 1 | 1 | 1 | 5 |
TSE, turbo spin-echo; TE, echo time; TR, repetition time; FOV, field of view; RFOV, rectangular field of view; NSA, number of acquisitions; SPIR, spectral pre-saturation inversion recovery.