Imaging Techniques ^ Abdominal X-ray: May identify dilated small bowel loops in obstruction or thickened

bowel loops in inflammatory disorders. ^ Contrast computed tomography (CT): The patient drinks, or is instilled through a

nasogastric tube, a special radiologic contrast solution to opacify the intestine. The patient is then passed through the CT body scanner. This is useful to detect thicken­ ing of bowel wall and presence of enterocolic and enterovesical fistulas. It provides detailed information of the small and large bowel, but is expensive, time-consuming, and uses ionizing radiation. CT enterography is a specially protocoled examination using large volumes of ingested enteric contrast material that improves the assessment of the mucosa and the bowel wall.