The Application Value of CT Angiography in the Diagnosis and Evaluation of Lower Extremity Arterial Disease in Patients with Type 2 Diabetes Mellitus
Objective To analyze the application value of CT angiography(CTA)in the diagnosis and evaluation of lower extremity arterial disease(LEAD)in patients with type 2 diabetes mellitus(T2DM).Methods The clinical data of 124 patients(1510 segments of blood vessels)with T2DM and LEAD were retrospectively analyzed.All patients underwent CTA,MRA and DSA,and DSA diagnosis and disease severity examination results were used as the gold standard.The consistency test of CTA and MRA was performed to compare the accuracy of the two methods.Results The consistency test showed that the sensitivity(98.18%),specificity(98.98%)and accuracy(98.54%)of CTA were not significantly different from those of MRA(96.97%,98.83%,97.81%)(P>0.05).The consistency test results between the results of detecting stenosis>50%and the gold standard showed that the sensitivity(94.59%),specificity(98.32%)and accuracy(96.95%)of CTA were significantly higher than those of MRA(91.35%,96.44%,94.57%)(P<0.05).The consistency test results between the results of detecting stenosis>75%and the gold standard showed that the specificity(98.69%)and accuracy(97.22%)of CTA were significantly higher than those of MRA(97.20%,95.63%)(P<0.05).However,there was no significant difference in sensitivity(92.62%,90.71%)between the two methods(P>0.05).Conclusion The efficacy of MRA and CTA in diagnosing LEAD is comparable,and CTA is better than MRA in evaluating the condition of LEAD patients.However,compared with the gold standard,both methods have higher accuracy.
万方数据
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