Table 1 Detailed sequence parameters of WB-DWI/MRI (whole body diffusion-weighted magnetic resonance imaging)
DWI | T2 SSTSE | Contrast-enhanced 3D T1 gradient-echo | |||||
|---|---|---|---|---|---|---|---|
Transverse | Coronal | Sagittal | Coronal | Transverse | Coronal | Transverse | |
Image stations head to mid-thigh | 4 | MPR | MPR | 3 | abdominopelvic (2) | abdominopelvic (2) | Chest (1) |
Respiration | Free breathing | respiratory | 15 s breath-hold | ||||
Fat suppression | STIR (TI = 250 ms) | none | SPAIR (mDIXON) | SPAIR (mDIXON) | SPAIR (eTHRIVE) | ||
b-values (s/mm2) | 0–1000 | none | none | none | none | ||
Parallel imaging factor | 2.5 | 4 | 2 | 2 | 2 | ||
Repetition time (TR) (ms) | 8454 | 3000 | 3.6 | 3.6 | 3.2 | ||
Echo time (TE) (ms) | 67 | 87 | 1.25–2.20 | 1.25–2.20 | 1.5 | ||
Slice thickness (mm) | 5 | 5 | 5 | 6 | 2.5 | 2.5 | 2.5 |
Slice number | 50/station | 35/station | 90 | 133 | 148 | ||
Intersection gap (mm) | 0.1 | 0.6 | 0 | 0 | 0 | ||
Field of view (FOW) (mm) | 420 × 329 | 375 × 447 | 375 × 304 | 400 × 352 | 375 × 304 | ||
Acquired voxel size (mm) | 4.57 × 4.71 | 1 × 1 | 1.49 × 1.5 | 1.49 × 1.5 | 1.49 × 1.5 | ||
Reconstructed voxel size (mm) | 2.19 × 2.16 | 0.93 × 0.93 | 0.71 × 0.71 | 0.71 × 0.71 | 0.98 × 0.97 | ||
Number of signal averages (NSA) | 1 | 1 | 1 | 1 | 1 | ||