Application Value of 256 slice CT Angiography in the Assessment of Coronary Artery Stenosis
Wu Qian
Tang Xiaoxian
Yuan Jie
Zhao Jie
Abstract：Objective To investigate the application value of 256 slice CT angiography(CTA)for diagnosing coronary artery steno-sis.Methods Two hundred patients suspected of coronary heart disease underwent 256 slice CTA examination,32 of whom under-went coronary angiography.According to the American Heart Association (AHA)for coronary artery segment method,coronary artery could be divided into 15 segments,to evaluate the image quality of each segment on a five point scale.The CAG results were regar-ded as gold standard,the diagnosis capacity of CTA for detecting coronary artery stenosis were analyzed.Resutls 2 385 segments were considered four and five score of 2 502 segments shown with CTA examination.Compared with the CAG results,the accuracy rate of 256 slice CTA in diagnosing coronary artery stenosis was 91.24%,the sensitivity was 90.52%,and the specificity was 91.54%, there was high consistency in the results of CTA and CAG in diagnosing coronary artery stenosis.The sensitivity rates of CTA for e-valuating the different coronary artery stenosis were:mild stenosis (66.67%),moderate stenosis (83.87%),severe stenosis (89. 19%).Conclusion The 256 slice CTA can display each segment of coronary artery clearly,and analysis and evaluate the segmen-tal stenosis better.So,as a noninvasive examination,the 256 slice CTA has important clinical value in the screening of coronary heart disease(CHD),and it can provide more reliable information for the selection of treatment.
Keywords：tomographyX ray computed tomographycoronary angiographycoronary artery stenosis
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1972-1975 )