title: Images in cardiovascular medicine. Westermark's and Palla's signs in acute pulmonary embolism.
authors.affiliation: North Bristol NHS Trust, Bristol, United Kingdom. shivasreenivasan@nhs.net
authors.forename: Shiva
authors.initials: S
authors.lastname: Sreenivasan
authors.forename: Sarah
authors.initials: S
authors.lastname: Bennett
authors.forename: Vernon J
authors.initials: VJ
authors.lastname: Parfitt
mesh_terms: D000208:Acute Disease; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging; D008297:Male; D008875:Middle Aged; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D013902:Radiography, Thoracic; D011877:Radionuclide Imaging