title: Increased specificity in the diagnosis of pulmonary embolism.
mesh_terms: D006801:Humans; D007866:Leg / Q000098:blood supply; D008722:Methods; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000000981:diagnostic imaging