Table 1 Parameters of sequences used in MRI scans of anal fistulas
Parameter | T2WI | T2WI | STIR | STIR | T1WI | T2WI | T1 post contrast | T1 post contrast |
|---|---|---|---|---|---|---|---|---|
Scanning plane | Axial | Sagittal | Axial | Coronal | Axial | Coronal | Axial | Coronal |
TR/TE (msec) | 3600/96 | 3600/98 | 3600/96 | 4000/62 | 3600/96 | 4000/62 | 3.50/1.41 | 3.50/1.41 |
FOV (mm) | 450 | 450 | 450 | 450 | 450 | 450 | 350 | 350 |
Slice thickness (mm) | 4 | 4 | 4 | 4 | 4 | 4 | 1.0 | 1.0 |
Slice spacing (mm) | 2 | 2 | 2 | 2 | 2 | 2 | 0.48 | 0.48 |
Matrix | 196 × 256 | 196 × 256 | 196 × 256 | 196 × 256 | 196 × 256 | 196 × 256 | 512 × 512 | 512 × 512 |