Multiphase CT scan (angiography and enterography)
Body:
Multiphase CT enterography (CTE) has a higher sensitivity than capsule endoscopy for the detection of small bowel tumors. The administration of a large volume of neutral or negative oral contrast allows adequate SB distension and evaluation of mucosal details, while IV contrast allows optimal visualization of the mesenteric vasculature.
CT angiography (CTA) without oral contrast is recommended for urgent imaging in patients with active bleeding, especially those with hemodynamic instability. With its rapid imaging capabilities and higher accuracy, CTA has largely replaced the technetium 99m red blood cell scan. Multiphase CT imaging is contraindicated in patients with decreased renal function and IV contrast allergy.