The research of 64-slice spiral CT in assessing the mild and severe stenosis of coronary artery / 中国医师进修杂志

ABSTRACT

Objective To evaluate the accuracy of 64-slice spiral CT(64 SCT)in assessing the mild and severe stenosis of coronary artery.Methods A total of 72 patients suspected to suffer from coronary artery disease underwent orderly both 64 SCT and selective coronary angiography(SCAG).Volume rendering (VR),multi-planar reconstruction(MPR),maximum intensity projection(MIP)and transverse section wasused to analyze the 64 SCT data.The results were compared with those of SCAG to investigate the accuracy of the 64 SCT in assessing the≥50% stenosis of coronary artery.Results In the 720 SCAG segments of 72 patients.684 of them could be evaluated by 64 SCT.The evaluated rate Was 95.0%.Compared with SCAG,the sensitivity,specificity,positive predictive value,negative predictive value and accuracy rate was 67.4%,92.9%,69.5%,92.3% and 88.0% respectively.Conclusion The accuracy of 64 SCT in assessing mild and severe stenosis is relatively high and it can be used for screening patients with suspected coronary artery diseases as a non-invasive method.