title: Zonography in the diagnosis of poorly visualized or non-filling gall-bladder in peroral cholecystography.
mesh_terms: D000368:Aged; D002765:Cholecystography; D005260:Female; D005705:Gallbladder Diseases / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D014056:Tomography, X-Ray