4Lockhart ME, Sheldon HI, Robbin ML. Augmentation in lower extremity sonography for the detection of deep venous thrombosis. AJR Am J Roentgrnol, 2005,184(2) :419-422.
5Zierler BK. Ultrasonography and diagnosis of venous thromboembolisrn. Circulation, 2004,109(Suppl):9-14.
6Orbell JH, Smith A, Burnand KG, et al. Imaging of deep vein thrombosis. Br J Surg, 2008,95(2) :137-146.
7Manckoundia P, Pfitzenmever P. Deep vein thrombosis despite a low D-Dimer level. J Mal Vasc, 2007,32(4-5):210-211.
8Geerts WH, Pineo GF, Heit JA, et al. Prevention of venous thromboembolism: the seventh ACCP conference on antithrombotic and thrombolytic therapy. Chest, 2004, 126 (Suppl 3 ) : 338S- 400S.
9Delis KT. Leg perforator vein incompetence: funetional anatomy. Radiology, 2005,235 ( 1 ) : 327-334.
10Subramaniam RM, Heath R, Chou T, et al. Deep venous thrombosis: withholding anticoagulation therapy after negative complete lower limb US findings. Radiology, 2005,237 ( 1 ) : 348-352.