title: Simple apparatus for decubitus films with horizontal beam.
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging; D003108:Colonic Diseases / Q000000981:diagnostic imaging; D006801:Humans; D008722:Methods; D010996:Pleural Effusion / Q000000981:diagnostic imaging; D011027:Pneumoperitoneum / Q000000981:diagnostic imaging; D011859:Radiography; D013679:Technology, Radiologic / Q000295:instrumentation*