On purple emperors, pulmonary embolism, and venous thrombosis.
D006801:Humans; D011651:Pulmonary Artery / Q000000981:diagnostic imaging; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging*; D011859:Radiography; D011877:Radionuclide Imaging; D013924:Thrombophlebitis / Q000175:diagnosis*; D014692:Ventilation-Perfusion Ratio