title: The fissure sign.
authors.affiliation: Department of Radiology, Nuclear Medicine, Christiana Care Health System, Christiana Hospital, Newark, DE 19718, USA. jcheema@rocketmail.com
authors.forename: J I
authors.initials: JI
authors.lastname: Cheema
mesh_terms: D005260:Female; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D008875:Middle Aged; D010996:Pleural Effusion / Q000000981:diagnostic imaging*; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging; D011877:Radionuclide Imaging; D014692:Ventilation-Perfusion Ratio