A Comparative Study Of Color Doppler Ultrasound And Venography In Diagnosing Deep Vein Thrombosis

Objective:Comparing the difference between the duplex sonography of colordoppler ultrasound and the venography in the diagnosis of lower extremitydeep venous thrombosis,and then with the venography as a standard tocalculate the specificity and sensitivity of the duplex sonography of colorDoppler ultrasound.At the same time, contrast the difference betweenparagraphs in the lower extremities vascular ultrasound diagnosis.Method：from2012to2013in our hospital’s36clinical patients withsuspected deep vein thrombosis. Color Doppler ultrasound probe sequencebilateral lower extremity femoral vein, superficial femoral vein, deep femoralvein, popliteal vein, posterior tibial vein, anterior tibial vein, peroneal vein andsoleus, gastrocnemius between the veins, check whether these veinsthrombosis.At the same time the color Doppler ultrasound examination of sixhours of suspected intravenous angiography ipsilateral thrombosis. This groupof patients,23males and13females, mean age63years, with venography asthe diagnostic gold standard, application software SPSS13.0do matchingtables chi-square test to compare color Doppler ultrasound and venography indiagnosing deep vein thrombosis difference, P <0.05, was consideredstatistically significant.First overall in the deep veins of the lower extremitiesas the research object, and calculate the ultrasonic diagnosis of deep venousthrombosis of sensitivity and specificity; followed in the femoral vein,popliteal vein, posterior tibial vein, anterior tibial vein, peroneal vein, the veinbetween muscle respectively, as the research object, using the same method todetermine the ultrasound and venous thrombosis diagnostic angiography andultrasound examination of the difference between sensitivity and specificity.Results: The group of36patients,31cases had ultrasound of deepvenous thrombosis,5cases ultrasound was negative; angiography,30patients had thrombosis, six cases no thrombus. With venography as the diagnosticgold standard by matching tables chi-square test, P <0.05, consider ultrasoundand angiography in the diagnosis of deep venous thrombosis was nosignificant difference. The sensitivity of ultrasound diagnosis of deep venousthrombosis was0.933and specificity of0.778,0.861accuracy rate.The36patients with lower extremity vascular segment as the research object, namelyits matching tables chi-square test, the results show: the anterior tibialmatching tables chi-square test of venous P <0.05, considered diagnosticultrasound and angiography There were significant differences in anteriortibial vein; the remaining paragraphs vein calculated P>0.05, considereddiagnostic ultrasound and angiography is no statistically significant difference.With venography as a diagnostic criterion, ultrasound femoral vein, poplitealvein, posterior tibial vein, anterior tibial vein, peroneal vein, the veindiagnostic sensitivity between muscle were:0.889,0.417,0.778,0.167,0.85,1calculate their specificity was1,0.833,0.778,1,0.813,0.909, the accuracy ratewas0.972,0.694,0.778,0.722,0.833,0.944.There are three cases in this groupof patients after anterior tibial vein angiography showed a lower confluencepoint with tibial vein, located under the edge of the popliteal, popliteal veinultrasound mistakenly diagnosed as posterior tibial veins, reducing thesensitivity of the diagnosis of the popliteal vein, another the first two patientswere higher tibial posterior tibial vein and vein confluence, located on theedge of the popliteal, tibial or before ultrasound mistakenly mistakenlydiagnosed with posterior tibial vein popliteal vein, reducing its specificity.Conclusions: Color Doppler ultrasound and venography was no significantdifference in the diagnosis of deep venous thrombosis, which can be used asthe preferred screening method for the diagnosis of DVT. Because of anatomicvariation ultrasound popliteal vein thrombosis segments may be false-negativeor false positive. For the diagnosis of anterior tibial vein thrombosis, thepresence of significant difference ultrasonography and angiography.