Sequence variables of the CRMO-adapted WB-MRI protocol.
| Description Orientation | T1-w TSE Coronal | T2-w STIR SPACE Coronal | T1-w TSE Sagittal | T2-w STIR SPACE Sagittal |
|---|---|---|---|---|
| TR, ms | 783 | 4000 | 700 | 6000 |
| TI, ms | — | 210 | — | 210 |
| TE, ms | 12 | 326 | 11 | 48 |
| Matrix, phase × read | 384 × 307 | 320 × 259 | 448 × 358 | 384 × 326 |
| Resolution, mm3, phase × read × slice | 1.1 × 1.1 × 5.0 | 1.5 × 1.5 × 5.0 | 1.1 × 0.9 × 3.5 | 1.2 × 1.0 × 3.5 |
| FOV, mm2 | 480 × 336 | 480 × 336 | 400 × 400 | 400 × 400 |
| Flip angle, ° | 180 | T2 var | 180 | 180 |
| Bandwidth, Hz/px | 161 | 1116 | 180 | 250 |
| Parallel imaging method | GRAPPA | GRAPPA | GRAPPA | GRAPPA |
| Acquisition time, s | 106 × 5 (6)* | 88 × 6 | 81 × 2 | 155 × 2 |
↵* Dependent on body size. CRMO: chronic recurrent multifocal osteomyelitis; WB-MRI: whole-body magnetic resonance imaging; TSE: turbo spin-echo; STIR: short-tau inversion recovery; SPACE: sampling perfection with application optimized contrasts using different flip angle evolution; TR: time of repetition; TI: inversion time; TE: echo time; FOV: field of view; GRAPPA: generalized autocalibrating partially parallel acquisitions.