An abdominal x-ray with barium meal (small bowel series) may be helpful in the diagnosis of ileus.  Findings on an x-ray suggestive of ileus include multiple air–fluid levels throughout the abdomen, elevated diaphragm with dilatation of both large and small intestine, slow movement of barium with a patent intestinal lumen. Serial x rays may also differentiate paralytic ileus from mechanical intestinal obstruction.
Ileus x ray
Ileus CT
Mesenteric ischemia x ray
Short bowel syndrome x ray
Acute diarrhea x ray
Abdominal pain x ray
Gastritis x ray
Meckel's diverticulum x ray