Table 1.
MRI protocols for rectal cancer
| Protocols | TR/TE (ms) | Slice thickness (mm) | Distance factor (%) | Slices | Flip angle (°) | Base resolution | Phase resolution (%) | FOV (mm) | Voxel size (mm) | Time acquisition |
|---|---|---|---|---|---|---|---|---|---|---|
| Sagittal T2WI | 3000/87 | 3.0 | 0 | 19 | 150 | 320 | 80 | 180 | 0.7 × 0.6 × 3.0 | 2 min 30 s |
| Coronal T2WI | 4000/77 | 3.0 | 0 | 25 | 137 | 384 | 80 | 220 | 0.7 × 0.6 × 3.0 | 2 min 52 s |
| Oblique axial T2WI | 3000/84 | 3.0 | 0 | 24 | 150 | 320 | 100 | 180 | 0.6 × 0.6 × 3.0 | 3 min 18 s |
| Oblique axial T1 mapping | 5.08/1.74 | 3.6 | 20 | 20 | 2 and 14 | 192 | 72 | 260 | 1.9 × 1.4 × 3.6 | 2 min 29 s |
| Oblique axial DCE-MRI | 4.83/1.87 | 3.6 | 20 | 20 | 12 | 192 | 69 | 260 | 2.0 × 1.4 × 3.6 | 5 min 24 s |
TR repetition time, TE echo time, FOV field of view, T2WI T2-weighted imaging, DCE-MRI dynamic contrast-enhanced magnetic resonance imaging