64层螺旋CT血管成像与冠状动脉造影对冠心病诊断价值的对比研究

目的评价64层螺旋CT在冠状动脉造影方面的诊断价值。方法58例临床诊断或可疑冠心病患者行64层螺旋CT冠状动脉成像检查,分别对左主干、左前降支、回旋支和右冠状动脉及其分支的重建图像行影像学评价,所有患者均行常规选择性冠状动脉造影检查作为对照。结果58例患者共757(87.0%)节段的冠状动脉(血管直径≥1.5 mm)成像,638节段(84.3%)可用于多层螺旋CT和冠状动脉造影定量分析。冠状动脉造影共发现狭窄101节段,多层螺旋CT发现狭窄104节段,多层螺旋CT对冠状动脉狭窄诊断的敏感性为86.1%,特异性为96.8%。结论64层螺旋CT冠状动脉造影可作为诊断冠状动脉病变的一种无创筛选方法。

Comparative value between 64 slices spiral CT and catheterization coronary angiography in diagnosis of coronary heart disease

Objective To evaluate the diagnostic accuracy of multislice spiral computed tomography(MSCT) coronary angiography using a new 64-slice scanner.Methods Fifty-eight consecutive patients undergoing elective invasive coronary angiography were studied.All these patients were examined with 64-slice MSCT.The CT images were reconstructed by means of retrospective electrocardiographic gating in left main stem,left anterior descending branch,left circumflex branch,right coronary artery and its side branches.Results All 58 cases showed diagnostic image quality.Of 870 segments,757(87.0%) could be evaluated and 638 of 757(84.3%) could be assessed quantitatively by both MSCT and quantitative coronary angiography.101 segments were diagnosed as the stenosis of coronary arteries by conventional angiography.Meanwhile 104 segments were found to have stenosis by means of MSCT investigation.The total sensitivity of MSCT was 86.1% and specificity was 96.8 %.Conclusion 64-slice MSCT coronary angiography can be used as a non-invasive screening method for diagnosis of stenosis of coronary artery.