title: Efficacy of an intracassette filter for improved pneumocolon decubitus radiographs.
mesh_terms: D001466:Barium Sulfate; D003106:Colon / Q000000981:diagnostic imaging*; D004733:Enema; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D011029:Pneumoradiography / Q000295:instrumentation*; D011187:Posture; D014962:X-Ray Film
chemical_list: D001466:Barium Sulfate