Gastrointestinal imaging-practical magnetic resonance imaging approach

Figure 5 Active Crohn’s disease. A: Coronal T2-weighted single shot fast spin echo and (B) coronal balanced steady state free precession (bSSFP) images as well as (C) coronal fat-suppressed post-gadolinium 3D-GRE T1-weighted images during the interstitial phase. There is an abnormal segment of distal ileal thickening with diffuse submucosal increased T2 signal intensity (arrows, A) displaying high signal intensity, consistent with edema. The bSSFP image (B) doesn’t demonstrate submucosal edema, but clearly depicts mesenteric lymph nodes and comb sign, associated with extensive mucosal enhancement (arrows, C), reflecting disease activity. Fibrofatty proliferation around the affected ileal segments is also seen. GRE: Gradient recalled echo.