title: [Problem of x-ray examination of the paranasal sinuses].
mesh_terms: D006801:Humans; D008722:Methods; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging*; D011187:Posture; D011859:Radiography
vernacular_title: Zum Problem der Röntgenuntersuchung der Nasennebenhöhlen.