Diffusion-weighted magnetic resonance imaging without bowel preparation for detection of ulcerative colitis

Figure 1 Accuracy of diffusion-weighted imaging hyperintensity from various b values to detect endoscopic inflammation.

Figure 2 Correlation between total magnetic resonance score and total modified Baron score.

Figure 3 Accuracy of segmental magnetic resonance score and seven signs indicating endoscopic inflammation.

Figure 4 A 22-year-old woman with known ulcerative colitis involving the rectum and the sigmoid colon. Mayo index = 8; total modified Baron score = 12; total MR-score = 22; T2WI without fat saturation (A) and T2WI with fat saturation (B) show a mild thickening of the sigmoid colon wall (blue arrows); DWI hyperintensity (C; b = 800 s/mm²; orange arrows); rapid gadolinium enhancement (D; orange arrows).