Fig. 6
From: Preoperative MRI of perianal fistula evaluation and its impact on surgical outcome
A 51-year-old man with inter-sphincteric fistula without abscess. a Axial T2-weighted image shows a perianal fistula (arrow) that exhibits high signal intensity. b Axial STIR-weighted image reveals high signal intensity of the fistula (arrow). c Axial T1 fat-saturated weighted image reveals intermediate signal intensity of the fistula (arrow). d Axial T1 fat-saturated post-contrast injection weighted image reveals intense contrast enhancement of the fistula (arrow). e Axial diffusion-weighted image reveals high signal intensity of the fistula (arrow). f Axial ADC mapping reveals high signal intensity of the fistula (arrow)