Fig. 5
From: Diffusion-weighted imaging in the evaluation of perianal fistula and abscess
Inter-sphincteric perianal fistulas grade 1. Two fistulas are seen at 3 o’clock and 10 o’clock (red arrows). a DWI trace image clearly showing the left sided fistula and poorly showing the right sided fistula. b ADC map revealing increased ADC value of both fistulas. c T2W image clearly showing both fistulas and absence of any abscesses. d Post-contrast T1W-SPIR confirms the findings of combined T2W and DWI