Investigation of suspected small bowel obstruction. Barium follow-through (BaFT) and CT are commonly performed, often concurrently. MRI is performed with relatively increased frequency in younger patients. BE, barium enteroclysis; Cap E, capsule endoscopy; CTE, CT enteroclysis; CTO, CT (oral contrast); MRIE, MRI enteroclysis; MRIO, MRI (oral contrast); SbUS, small bowel ultrasound.