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 Posted: Mon 1:00, 28 Mar 2011 Post subject: Varicose veins of color Doppler ultrasound diagnos |
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Varicose veins of the diagnostic value of color Doppler ultrasound
The diagnosis of the disease depend on the past, general physical examination and x-ray contrast, the former lack of specificity, the latter is an invasive, contraindications are more apt to cause complications and high-resolution ultrasound in a safe, non-invasive, no contraindications cards, sensitivity and specificity advantages, has become the new standard for evaluation of venous function. Large amounts of data at home and abroad show that color Doppler ultrasound diagnosis of lower extremity venous disease sensitivity of 92 to 95, a specificity of 89% ~ 97Vo; X ray intravenous contrast sensitivity 89, specificity was 97, there was no significant difference. Our data also shows that color Doppler ultrasound and x ray venography in the diagnosis of lower extremity varicose veins no difference. Applicable to any type of color Doppler ultrasound in patients, but the image is clear, intuitive and easy identification. 1 case of consciousness in this group of patients, the same accurate results available: 1 case of contrast agents and blood as a narrow layer caused the illusion of color Doppler ultrasound can directly clearly displayed. For small and dynamic observation of the local disease and valvular vitality, functional state, thrombosis and other more than x-ray contrast. 3.2 The extent of color Doppler ultrasound assessment of varicose veins: color Doppler ultrasound can be visually clear indication of the deep vein wall, the lumen is smooth, flow direction,[link widoczny dla zalogowanych], nature, speed, and collateral circulation, can also observe the development of valve functions circumstances and extent of thrombotic occlusion, which directly or indirectly affect the choice of treatment and prognosis. Doppler imaging and spectral characteristics of the severity of limb disease before and after treatment for semi-quantitative analysis of the situation, as an objective reflection of lower limb vascular function and hemodynamic status provides an ideal method. 3 patients because of the blood stasis, multiple thrombosis, a serious obstruction, vascular dysfunction, CDFI showed almost no blood flow signal within the lumen, Vmax10cm / s, and are accompanied by blood reflux, TrY1.0s, the light significant expansion of veins, and poor prognosis. Mild among those without venous reflux, with the blood formed elements in blood flow and continuous accumulation of slow, spread, such as basis. 3.3 The lack of color Doppler ultrasound diagnosis of lower extremity varicose veins: ① can not display traffic vein. Traffic venous insufficiency in lower extremity varicose ulcer play an important role in its diagnosis of surgical ligation of the communicating branch dysfunction instructive. Communicating branch of the group 1 patients dysfunction in patients with color Doppler ultrasound was not found. @ Valsalva test is checking the blood of regurgitation is an important factor, for some patients can not cooperate, it is difficult to accurately determine the regurgitation. ③ veins and valves for remote indications are poor. When deep venous valvular incompetence regurgitation Ⅲ. Above, shall be implemented as deep vein valve repair should be combined with intravenous contrast.
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