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Figure 5b.   Strangulated bowel obstruction due to bands and adhesions in a 25-year-old pregnant woman. (a) Coronal contrast-enhanced MR image shows diffuse small bowel dilatation and poor enhancement (arrows) in the strangulated segment. (b) Coronal half-Fourier single-shot fast spin-echo MR image shows bowel wall thickening with a target appearance (black arrows) and regional mesenteric vascular engorgement (white arrows).