Clinical value of color Doppler flow imaging and B-flow technique in assessing the grade of deep venous valvular regurgitation of lower limbs

Objective To discuss the clinical value of color Doppler flow imaging (CDTI) and B-flow technique in assessing the grade of deep venous valvular reguritation of lower limbs. Methods CDFI and B-flow technique were used to examine the deep veins of lower limbs in 85 cases. The diameter,reflux time, reflux velocity and reflux of common femoral vein and superficial femoral vein were calculated in groups with different grades. Veneography was performed in the same period. Results Except in reflux grade 0,ⅠandⅡgroups,there were statistical significant differences in reflux between other each two groups. With regard to reflux time,there were significant differences between gradeⅢ,ⅣandⅠ, groups. There was no statistical difference of venous diameter between common femoral vein and superficial femoral vein. Conclusion CDFI and B-flow technique can assess functional defect of deep veins of lower limbs accurately. Reflux index is a reliable parameter in evaluating the grade of deep venous valvular regurgitation.