title: Radiological examination of the small intestine by duodenal intubation.
mesh_terms: D003287:Contrast Media; D005471:Fluoroscopy; D006801:Humans; D007421:Intestine, Small / Q000000981:diagnostic imaging*; D007441:Intubation, Gastrointestinal / Q000295:instrumentation; D008722:Methods; D011829:Radiation Dosage
chemical_list: D003287:Contrast Media