Table 1.
Parameters of the magnetic resonance microscopy sequences employed.
| SEQUENCES | TR (ms) | TE (ms) | Echoes | Averages | RF | Flip Angle | Matrix | Measurement method | Slices number |
|---|---|---|---|---|---|---|---|---|---|
| T1-weighted imaging | 1500 | 9.3 | 1 | 128 | 4 | 90° | 256 × 256 | RARE | 12 |
| T2-weighted imaging | 4000 | 38.4 | 1 | 64 | 4 | 90° | 256 × 256 | RARE | 12 |
| T2*-weighted imaging | 2000 | 9 | 1 | 8 | — | 30° | 256 × 256 | MGE | 12 |
| T2- multiecho sequences | 2500 | From 9.8 to 156 | 16 | 16 | — | 90° | 256 × 256 | MSME | 12 |
| T2*- multiecho sequences | 2000 | From 4 to 70 | 12 | 8 | — | 30° | 256 × 256 | MGE | 12 |
Abbreviations: MGE = multi gradient echo sequence; MSME = multi slice, multi echo pulse sequence; RARE = rapid acquisition with refocusing echo sequence; RF = RARE factor; T1 = longitudinal relaxation; T2 = transversal relaxation; T2* = effective transversal relaxation; TE = echo time; TR = repetition time.