A novel method for evaluating the superficial femoral vein valve insufficiency degree by CDFI
GUO Qiang1, LUO Wei-hua1, CHEN Dao-fang1, XU Fang1, ZHI Fen-yan1, YAO Hong1, TIAN Jia-wei2
1. Department of Ultrasound in Medicine, Jinshan Branch of Shanghai No.6 People’s Hospital, Shanghai 201599, China; 2. Department of Ultrasound in Medicine, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China
Abstract：Objective: To evaluate the diagnostic value of color Doppler flow imaging(CDFI) in lower limb deep venous insufficiency. Methods: Total 63 patients with lower limb deep venous insufficiency(81 affected limbs, patient group) and 24 cases of normal control(48 normal limbs, control group) were included in the study. Color Doppler ultrasound was used to observe various indexes of hemodynamic variations including reflux area(RA), reflux time(RT), and reflux velocity(RV) of the first pair of the superficial femoral vein valve. The grading of lower limb deep venous insufficiency was based on the results of lower extremity venous retrograde angiography. Results: There was a statistical difference in RA and RT between the patient group and the control group(P<0.05). There was a strong positive correlation between the superficial femoral vein valve RA estimated by color Doppler ultrasound and the reflux degree estimated by lower limb deep venous insufficiency(r=0.998). But poor correlation was observed about RT and RV(r=0.574, and r=0.170, respectively). Conclusion: CDFI can accurately measure the superficial femoral vein valve RA, which availably reflects the degree of lower limb superficial femoral vein valve reflux. Whereas, the RT and RV have no diagnostic significance for the grading of valvular regurgitation in the study.
2014, Vol. 25 
