Table 4 Visibility of PAF using different MRI pulse sequences
From: Preoperative MRI of perianal fistula evaluation and its impact on surgical outcome
MRI pulse sequences | No. of positive visible fistula | Sensitivity | Specificity | Accuracy |
|---|---|---|---|---|
T1 post-contrast | 54 (83.1%) | 71.2% | 33.3% | 67.7% |
STIR | 55 (84.6%) | 78% | 66.7% | 76.9% |
DW-MRI | 59 (90.8%) | 83.1% | 100% | 84.6% |
DW-MRI + T1 post-contrast | 60 (92.3%) | 84.8% | 100% | 86.2% |
DW-MRI + STIR | 61 (93.8%) | 88.1% | 100% | 89.2% |
All sequences | 62 (95.4%) | 88.7% | 100% | 90.1% |