title: The checkerboard sign: a perfusion-ventilation pattern of pulmonary tumor microemboli
authors.affiliation: Department of Nuclear Medicine, William Beaumont Hospital, Royal Oak, Michigan 48073-6769, USA.
authors.initials: D
authors.lastname: Fink-Bennett
authors.initials: KP
authors.lastname: Ravikrishnan
authors.initials: JA
authors.lastname: Underhill