Gastrointestinal imaging-practical magnetic resonance imaging approach

Figure 2 Active distal ileal Crohn’s disease. Axial diffusion weighted imaging (A) (b = 150) and (B) apparent diffusion coefficient map as well as (C) axial and (D) coronal fat-suppressed post-gadolinium 3D-GRE T1-weighted images. There is a long segment of distal ilial diffuse thickening associated with diffusion restriction (A and B) as well as significant contrast enhancement (C) and vasa recta engorgement (comb sign) (D) in keeping with active Crohn’s disease. GRE: Gradient recalled echo.