To analyze the value of DSCTV and DUS in the diagnosis of thrombosis in inferior vena cava and bilateral lower extremities deep venous / 中国医学装备

ABSTRACT

Objective:To explore the clinical value of dual-source CT direct method lower extremity deep vein CT angiography (DSCTV) and Doppler ultrasound (DUS) in the diagnosis of thrombosis in inferior vena cava and bilateral lower extremities deep venous.Methods: 40 suspected patients with lower extremities deep vein thrombosis (DVT) were enrolled to accept DSCTV, and the every original image data of this detection was analyzed by using multi- mode image reconstruction analysis. One week before and after DSCTV, all of patients need carried out DUS detections for inferior vena cava and bilateral lower extremities deep venous. 22 cases of these patients were detected by lower extremity deep vein X-ray digital subtraction angiography (DSA).Results: There was better consistency for diagnosis results between DUS and DSCTV, and their Kappa value was 0.784. The sensitivity, specificity and accuracy of DUS for lower extremity DVT, respectively, were 93.4%, 86.7% and 91.6%, and each result of DUS was lower than that of DSCTV (sensitivity with 97.2%, specificity with 91.1% and accuracy with 95.6%). By drawing ROC curve, the AUC value of DUS was 0.897, and that of DSCTV was 0.936, while the difference between them was no significant (Z=1.143,P>0.05).Conclusion: DSCTV possesses unique scanning and post-processing technique, which has a good reference value in the diagnosis for DVT