Fig. 5
From: Preoperative MRI of perianal fistula evaluation and its impact on surgical outcome
![Fig. 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs43055-019-0085-9/MediaObjects/43055_2019_85_Fig5_HTML.png)
A 38-year-old man with left inter-sphincteric fistula without abscess. a Axial T2-weighted image, the perianal fistula is not visualized. b Axial STIR-weighted image reveals high signal intensity left perianal fistula (arrow). c Axial T1 fat-saturated weighted image, the perianal fistula is not visualized. d Axial T1 fat-saturated post-contrast injection weighted image, the perianal fistula is not visualized. e Axial diffusion-weighted image reveals high signal intensity of the fistula (arrow). f Axial ADC mapping shows high signal intensity of the fistula (arrow)