Preventing postoperative thromboembolism.
D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D011183:Postoperative Complications / Q000517:prevention & control; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging* / Q000517:prevention & control; D011877:Radionuclide Imaging; D013923:Thromboembolism / Q000517:prevention & control