In children,<unk>  is indicated in the acute setting: *Suspected bowel obstruction or gastrointestinal perforation;<unk>  will demonstrate most cases of bowel obstruction, by showing dilated bowel loops. *Foreign body in the alimentary tract; can be identified if it is radiodense. *Suspected<unk>  mass *In suspected intussusception, an<unk>  does not exclude intussusception but is useful in the differential diagnosis to exclude perforation or obstruction. Yet, CT scan is the best alternative for diagnosing intra-abdominal injury. Computed tomography provides an overall better surgical strategy planning, and possibly less unnecessary laparotomies.<unk>  is therefore not recommended for adults with acute<unk>  pain presenting in the emergency department.
Abdominal x-ray
Lower gastrointestinal series
Upper gastrointestinal series
Sigmoidoscopy
Dry enema
Double-contrast barium enema
Endoscopic ultrasound
Rectal thermometry