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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 sequencesNo. of positive visible fistulaSensitivitySpecificityAccuracy
T1 post-contrast54 (83.1%)71.2%33.3%67.7%
STIR55 (84.6%)78%66.7%76.9%
DW-MRI59 (90.8%)83.1%100%84.6%
DW-MRI + T1 post-contrast60 (92.3%)84.8%100%86.2%
DW-MRI + STIR61 (93.8%)88.1%100%89.2%
All sequences62 (95.4%)88.7%100%90.1%