16 层螺旋CT 冠状动脉血管成像和传统

16 层螺旋CT 冠状动脉血管成像和传统
冠状动脉血管造影的对比研究
邱建星 唐光健 高福生 刘建新 蒋学祥
【摘要】 目的 评估16 层螺旋CT 血管成像( CTA) 判断冠状动脉血液动力学相关性狭窄( ≥
50% ) 的价值。方法 对同时接受16 层CT 冠状动脉成像和传统冠状动脉血管造影检查的26 例患者
进行回顾性分析。扫描时采用16 排探测器, 机架转速为2 周/ s, 使用后心电门控进行横断面影像重
建, 结合三维重建影像评估冠状动脉狭窄程度。结果 以冠状动脉血管造影为金标准, 冠状动脉CTA
影像判断血液动力学相关性冠状动脉狭窄( ≥50%) 的敏感度为90. 0%, 特异度为95. 5% , 准确度为
94. 7% , 阳性预测值为77. 6% , 阴性预测值为98. 2% 。结论 16 层CTA 判断冠状动脉血液动力学相
关性狭窄( ≥50% ) 有较高的临床诊断价值, 对临床冠心病的诊断有较大指导意义。
【关键词】 体层摄影术, X 线计算机; 冠状动脉血管成像; 冠心病
Corona ry ar tery stenosis: compar ison st udy of CT angiogr aphy with 16-detector rows scanner and
convention angiogr aphy QIU J ia n-xing, TANG Guang-jian, GAO Fu-sheng, LIU J ia n-xin, J IANG
Xue-xiang. Department of Ra diology, Peking University First Hospital, Beijing 100034, China
【Abstra ct 】 Objective To evaluate the accuracy of 16-detector row computed tomography coronary
angiography in detection of hemodynamically relevant stenosis ( ≥50%) of the coronary artery. Methods
Twenty-six patients undergoing both multi-detector row CT and conventional coronary angiography were
included in this retrospective study. CT scan were obtained with collimation of 16 and rotation time of
500 ms. Retrospective electrocardiographic ( ECG) gating was used for image reconstrution. The stenosis
degree was detected with axial scanning and three-dimensional reformation. Results With the results of
conventional coronary angiography as golden standard, the sensitivity, specificity, accuracy, positive
predicted value and negative predicted value of the CT angiography in detection of hemodynamically relevant
stenosis ( ≥ 50% ) were 90. 0% , 95. 5% , 94. 7% , 77. 6% , and 98. 2% respectively. Conclusion
Sixteen-detector row computed tomography coronary angiography has high clinical value with evaluating
hemodynamically relevant stenosis ( ≥50%) of coronary artery, and could be a significant guide for diagnosis
and therapy of coronary heart disease.
【Key wor ds】 Tomography, X-ray computed; Coronary angiography; Coronary heart disease

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