64层螺旋CT对冠状动脉疾病诊断的评价

Diagnostic Accuracy of 64-Slice Spiral CT for Detecting Coronary Artery Stenosis Comparis on with Convention Alangiography

目的探讨64层螺旋CT对冠状动脉疾病的诊断价值。方法对45例[男29例，女16例，年龄60～86（73．1±5．3）岁]冠心病疑似患者在7d内进行64层螺旋CT冠状动脉造影（CTA）及常规冠状动脉造影（CAG），对冠状动脉的右冠状动脉、左主干、左前降支和回旋支进行检查。以CAG结果为金标准，分析64层螺旋CT诊断〉50％的冠状动脉狭窄的准确性。结果CTA评价〉50％冠状动脉狭窄的敏感性为94．0％，特异性为94．0％，阳性预测值为69．6％，阴性预测值为94．0％，符合率为78．8％。结论64层螺旋CT对老年冠状动脉疾病患者具有较高的诊断价值，可作为评价冠状动脉狭窄的一种无创检查。

Objective To evaluate the accuracy and feasibility of 64-slice spiral CT in detecting coronary artery stenoses. Methods Forty-five patients[29 male, 16 female;aged 60-86（73.1± 5.3）years]with suspected coronary artery disease underwent coronary angiography and 64-slice spiral CT. The meantime span between coronary angiography（CAG）and CT angiography （CTA） was 7days. Evaluation of right coronary artery（RCA）,left main（LM）, left anterior descending artery（LAD） ,and circus flex branch（CX） ,was performed by two. All vessels with a lumenre striction of〉50% was considered as a significant stenosis. Invasive coronary angiography was taken as gold mark for calculations of diagnostic accuracy. Results The sensitivity, specificity, positive predictive value, negative predictive value and accuracy of 64-slice spiral CT coronary angiography in diagnosing〉50% coronary stenosis was 94.0% ,94.0% ,69.6% ,94.0% and 78.8% respectively. Conclusion The 64-slice spiral CT coronary angiography is an effective and noninvasive exam- ining technique with high image quality. It could be used in diagnosing accurately CHD.