MRI settings for the multiecho data image combination (MEDIC) sequence for T2* mapping, the double-echo steady-state (DESS) sequence for morphological cartilage assessment, the B1 Prescan with various flip angles for B1 field-in-homogeneity correction and the dual flip angle Volumetric Interpolated Breathhold Examination (VIBE) sequence for T1Gd mapping
| Sequence parameter | 3D MEDIC Inline T2* mapping | 3D DESS Water excitation | B1 Prescan | 3D VIBE Inline T1Gd mapping |
|---|---|---|---|---|
| TR (repetition time, ms) | 65 | 16.38 | 1000 | 11.5 |
| TE (echo time, ms) | 6.56, 16.12, 26.20, 36.28, 46.36, 56.45 | 5 | 14.0, 14.0 | 4.6 |
| FA (flip angle, °) | 25 | 25 | 90, 120, 60, 135, 45 | 4, 23 |
| NEX (number of excitations) | 1 | 4 | 1 | 3 |
| FOV (Field of view, mm²) | 57 | 63 | 250 | 57 |
| Slice thickness (mm) | 0.22 | 0.25 | 5 | 0.22 |
| In-plane resolution (mm) | 0.22×0.22 | 0.25×0.25 | 7.8×7.8 | 0.22×0.22 |
| Slap | 208 | 208 | 20 | 208 |
| Bandwidth (Hz/Pixel) | 130 | 199 | 260 | 130 |
| TA (acquisition time, min) | 28:54 | 28:48 | 0:37 | 32:29 |
DESS, double-echo steady-state; MEDIC, multiecho data image combination; VIBE, volumetric interpolated breathhold examination.