title: Technologist-performed barium pneumocolon study.
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D004733:Enema; D006801:Humans; D008297:Male; D008875:Middle Aged; D011029:Pneumoradiography / Q000379:methods*
chemical_list: D001466:Barium Sulfate