Fig. 8
From: Preoperative MRI of perianal fistula evaluation and its impact on surgical outcome
A 26-year-old man with supra-sphincteric fistula with abscess. a Axial T2-weighted image shows C-shaped left perianal abscess (arrow) that exhibits high signal intensity. b Axial STIR-weighted image reveals high signal intensity of the perianal abscess (arrow). c Axial T1 fat-saturated weighted image the perianal abscess is not visualized. d Axial T1 fat-saturated post-contrast injection weighted image reveals intense contrast enhancement of the perianal abscess (arrow). e Axial diffusion-weighted image reveals high signal intensity of the perianal abscess (arrow). f Axial ADC mapping shows high signal intensity of the perianal abscess