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Table 5 Detection of collections defined as cavities of > 3 mm in diameter using different MRI pulse sequences

From: Preoperative MRI of perianal fistula evaluation and its impact on surgical outcome

MRI pulse sequencesPositiveNegativeSensitivitySpecificityAccuracy
TrueFalseTrueFalse
T1 post-contrast116381052.4%86.4%75.4%
STIR13638861.9%86.4%78.5%
DW-MRI17539481%88.6%86.2%
DW-MRI + T1 post-contrast18539385.7%88.6%87.7%
DW-MRI + STIR20440195.2%91%92.3%
All sequences213410100%93.2%95.4%