title: [The value of preliminary straight radiographs in peroral cholecystography].
mesh_terms: D000284:Administration, Oral; D001659:Biliary Tract / Q000000981:diagnostic imaging*; D002765:Cholecystography; D003287:Contrast Media / Q000008:administration & dosage; D005069:Evaluation Studies as Topic; D006801:Humans; D012189:Retrospective Studies
chemical_list: D003287:Contrast Media
vernacular_title: Vaerdien af tom-optagelse fr peroral kolecystografi.