Fig. 2. A case of a fibrotic stricture in a child with Crohn's disease. (A) Contrast-enhanced ultrasound demonstrates minimal contrast enhancement in the surgical anastomosis. (B) Transverse magnetic resonance imaging of the abdomen demonstrates mild hyperenhancement of the small bowel loops without definite wall thickening or mesenteric inflammation. (C) Contrast enhancement curve and quantitative parameters generated from the time-intensity curves based on the drawn region of interest in the surgical anastomosis.

LDRW: local density random walk, WIWO: wash-in, wash-out, AUC: area under the curve.