Gastrointestinal imaging-practical magnetic resonance imaging approach

Figure 19 Left colonic diverticulitis. A: Coronal T2-weighted single shot fast spin echo (SSFSE); B: Axial fat-suppressed T2-weighted SSFSE; C: Axial and D: Coronal fat-suppressed post-gadolinium 3D-GRE T1-weighted images during the interstitial phase. There is wall thickening of the descending colon (A), with pericolonic free fluid, better depicted on axial T2-weighted SSFSE image (B). Post-gadolinium images (C and D) show marked enhancement of the left colon, with pericolonic enhancement including the pre-renal fascia. Coronal postgadolinium image (D) shows left colonic diverticula and associated bowel wall and vasa recti engorgement (arrows), consistent with inflammation. GRE: Gradient recalled echo.