First-line investigation performed by radiologists in newly diagnosed Crohn’s disease patients. Barium follow-through (BaFT) is most commonly used, whereas small bowel ultrasound (SbUS) and MRI (oral contrast) (MRIO) are used relatively more frequently in younger patients. BE, barium enteroclysis; Cap E, capsule endoscopy; CTE, CT enteroclysis; CTO, CT (oral contrast); MRIE, MRI enteroclysis.