多层螺旋CT冠状动脉成像的临床应用

目的 探讨MSCT冠状动脉成像技术及临床应用价值.方法 150例行MSCT冠状动脉造影检查,100例行冠状动脉造影,MSCT与冠状动脉造影(CAG)进行比较,评价MSCT对冠状动脉各支的显示能力.结果 150例受检者,冠状动脉显示成功率95.3%,优良率82.97%.心率与图像质量呈负相关(r=0.938,P=0.018).MSCT和CAG 2种检查方法在发现冠状动脉管腔狭窄程度上差异无统计学意义(P>0.05),在管腔狭窄程度上,MSCT评估的准确性为91.2%.结论 在控制心率(70次/min)下,MSCT能显示冠状动脉所有1～3级分支及大部分4级分支,对冠状动脉狭窄的筛查与诊断、冠状动脉支架置人术及搭桥后的评价与随访有无可比拟的优势.

Clinical Application of Multislice Spiral CT Coronary Angiography

Objective To approach the clinical applied value of MSCT coronary angiography in detecting coronary artery disease. Methods 150 patients underwent MSCT coronary angiography, of them, 100 patients were also examined by coronary arteriography. The ability in showing coronary arteriae with MSCT was evaluated comparatively with coronary arteriography. Results The success-ful rate in showing coronary arteriae by MSCT was 95.3%,the excellent rate of images was 82.970%. There was negative correlation between image quality and heart rate(r=0.938). And the accurate rate in evaluating the narrowing of coronary arteriae was 91.2% with MSCT. There was no significant difference in detecting the narrowing of coronary arteriae with MSCT and coronary angiography (P>0.05). Conclusion By controlling the patients' heart rate(below 70/min) and optimizing the technical methods,MACT coro-nary angiography can detect all of the 1～3 branch of coronary artery. MSCT has some particular superiority in diagnosing coronary artery disease and evaluating the effects of coronary artery bypass graft.