Fig. 7From: Introducing 3D modelling of MRI in the preoperative mapping of perianal fistula: How it could help the surgeons?A 38-year-old male patient; with a history of drainage of perianal abscess one year ago. He presented with discharging perianal fistula of one-month duration. On DRE, a left low perianal tract is felt, with an external opening seen at 2 o’clock. 2D MRI showing sagittal T2 (TR/TE, 3000/90) (a) and oblique axial T2W images (TR/TE, 7228/100) (b) with an anterior tract (white arrows), extending cranially to breech the external anal sphincter, with an enteric opening at 12 o’clock (blue arrow). Side view (c) and top view (d) of the 3D model show the tract (red) extending cranially to breech the external anal sphincter (yellow) with an internal opening seen breaching the internal anal sphincter (blue) at 12 o’clock (White arrow)Back to article page