Table 1.
WB-MRI sequence parameters
| T2 Coronal | T1 Coronal | T2 Sagittal | T1 Sagittal | DWI Coronal | T1 Coronal | T1 Axial | T1 Sagittal | T1 Axial brain | |
|---|---|---|---|---|---|---|---|---|---|
| Contrastb | No | No | No | No | No | Yes | Yes | Yes | Yes |
| Anatomic coverage | Whole bodya | Whole body | Whole spine (C, T, L spine) | Whole spine (C, T, L spine) | Torsoc | Whole bodya | Torsoc | Whole spine (C, T, L spine) | Brain |
| Sequences | 2D, FS, TSE | 3D, VIBE | 2D, TSE | 2D, TSE | 2D EPI | 3D VIBE | 3D VIBE | 2D, TSE | 2D spin-echo |
| TE (ms) | 91 | 1.4 | 77 | 10 | 63 | 1.3 | 1.3 | 10 | 9.6 |
| TR (ms) | 5260 | 3.1 | 3610 | 520 | 4500 | 4.4 | 4.0 | 520 | 500 |
| Flip angle (°) | 130 | 9.0 | 150 | 120 | 90 | 13.0 | 9.0 | 120 | 70 |
| Echo train length | 17 | 1 | 17 | 4 | 41 | 1 | 2 | 4 | 1 |
| Number of slices | 55 | 55 | 20 | 20 | 100 | 55 | 280 | 20 | 20 |
| Slice thickness (mm) | 5 | 5 | 3.9 | 3.9 | 2.5 | 5 | 3 | 3.9 | 5 |
aWhole-body ranges from cranial vertex to feet
bContrast enhancement is performed under clinicians’ approval only when the renal function is within normal range
cTorso includes neck, chest, abdomen, and pelvis
Abbreviations: DWI = diffusion weighted imaging; FS = fat suppression; TSE = turbo spin echo; VIBE = volumetric interpolated breath-hold examination; EPI = echo-planar image