title: Pelvic pneumography as an aid in determining the causes of menstrual disorder.
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008599:Menstruation Disturbances / Q000000981:diagnostic imaging / Q000209:etiology*; D008722:Methods; D009609:Nitrous Oxide; D010388:Pelvis / Q000000981:diagnostic imaging*; D011028:Pneumoperitoneum, Artificial; D011859:Radiography
chemical_list: D009609:Nitrous Oxide