Title: Value of ultrasonography in diagnosis of lower limb deep vein thrombosis in elderly patients
Abstract: Objective To explore clinical value of gray scale ultrasonography and color Doppler flow imaging(CDFI) in detecting lower limb deep venous thrombosis(DVT) of elderly patients. Methods Sixty five elderly patients with lower limb DVT were examined by gray scale ultrasonography and color Doppler.The location,size,echo characteristics,degree of embolism,and filling of color flow of DVT site were observed.Results In all the 65 patients with 72 diseased limbs,thrombosis was found in 105 venous segments of 41 left lower limbs and 79 venous segments of 31 right lower limbs.There were 40 cases(45 limbs) with acute DVT and 26 cases(27 limbs) with subacute DVT.There were different features between acute and subacute thrombosis. There were low echoes and no blood flow signals in the acute venous thrombosed segments. The diameter of diseased venous lumen was increased and could not be compressed completely. CDFI showed blood flow filling defect in thrombosed segments.The echoes of subacute venous thrombosod segments were diversified.The diameter of venous lumen differed,and the echoes of vessel wall were enhanced.Collateral circulation could be detected surrounding the thrombosed segments in some patients.Conclusions Gray scale ultrasonography and color Doppler could diagnose lower limb DVT,and provide guidance for therapy in time.Ultrasonography may play an important role in DVT screening,evaluating and following-up.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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