Analysis of the value of CT angiography in postoperative evaluation of iliac vein stent implantation
Objective To evaluate the value CT angiography(CTA)in postoperative evaluation of iliac vein stent implantation.Methods 70 patients who underwent iliac vein stent implantation were enrolled.During their postoperative follow-up,CTA and ultrasound examination were performed.Digital subtraction angiography(DSA)was used as the"gold standard"to compare the error of the distance between the upper end of the stent and the opening of the iliac vein,as well as the diameter of the narrowest point of the stent with the"gold standard",diagnostic consistency of stent position and morphology,and detection of thrombosis of the two examination methods were compared.Results The error of CTA for the distance between the upper end of the stent and the opening of the iliac vein,as well as the diameter of the narrowest point of the stent with the"gold standard"were(0.67±0.16)and(0.39±0.04)mm,which were all smaller than(1.53±0.35)and(0.76±0.08)mm of ultrasound examination,and the difference was statistically significant(P<0.05).The consistency rate of CTA examination for stent position and morphology was 91.43%,which was higher than 67.14%of ultrasound examination,and the difference was statistically significant(P<0.05).The detection rate of CTA for thrombosis was 91.67%,which was higher than 58.33%of ultrasound examination,and the difference was statistically significant(P<0.05).Conclusion During the follow-up after iliac vein stent implantation,CTA can clarify the position and morphology of the stent in the patient,determine whether there is thrombosis,and provide a reference basis for the assessment of postoperative recovery in a timely manner.
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