Table 1.
Sequence parameters
| Sequence | TR (ms) | TE (ms) | TSL (ms) | Matrix | FOV (mm) | In-plane spatial resolution (mm) | Slice thickness (mm) | Flip angle (o) | No. of averages | Sequence duration (mins) |
|---|---|---|---|---|---|---|---|---|---|---|
| 3D-FS SPGR | 25.6 | 6.7 | N/A | 512 × 380 | 160 × 120 | 0.31 × 0.31 | 1 | 20 | 0.5 | 7 |
| 3D FSE T1rho | 1260 | 35 | 1/10/20/35 | 320 × 256 | 150 × 120 | 0.47 × 0.47 | 3 | 90 | 0.5 | 5 |
| 3D FSE T2 | 1285 | 6.5/13.4/27.0/40.7 | N/A | 320 × 256 | 150 × 120 | 0.47 × 0.47 | 3 | 90 | 0.5 | 5 |
NOTE: TR Repetition time, TE Echo time, TSL Spin-lock pulse duration, FOV Field of view, SPGR Spoiled gradient recalled-echo, FS fat-suppressed, FSE Fast spin echo. No. of averages = 0.5 = a half-fourier acquisition using phase-conjugate symmetry for acceleration purposes. Sequence times are rounded to nearest 30 s