64层螺旋CT与选择性冠状动脉造影对照性研究及其临床应用

目的：探讨64层螺旋CT（MSCT）冠状动脉造影的临床应用。方法：对256例患者行64层螺旋CT冠状动脉造影检查，利用其先进的后处理功能对冠状动脉进行重建，以显示冠状动脉各主支及其分支，并对冠状动脉病变进行诊断。其中66例患者同时行选择性血管造影检查。结果：256例行64层螺旋CT冠状动脉造影的患者有249例成功地显示冠状动脉各主支(左冠脉主支、左冠脉回旋支、左冠脉前降支及右冠状动脉主支)及其分支（包括右冠脉的后降支、左室后支、圆锥支、窦房结动脉及左冠脉的对角支、钝缘支等），另外7例由于扫描过程出现心率过快（＞90次）或出现严重心律不齐，重建图像质量欠佳或出现锯齿状伪影，部分冠状动脉显影欠佳。138例64-MSCT诊断201支冠状动脉有斑块形成并管腔不同程度的狭窄。其中66例患者的64-MSCT诊断冠脉狭窄的患者行选择性血管造影检查，诊断 62例的78支冠状动脉伴有不同程度的狭窄,64层螺旋CT的诊断准确率为93.94%。结论：64层螺旋CT对冠脉疾病的诊断准确率接近选择性冠状动脉造影，是一种准确可靠的检查方法。

64-slices spiral CT angiography and selective coronary angiography for the coronary artery:a comparative study

Objective To study the clinical effect of 64-slices spiral CT in the coronary artery.Methods 64-slices spiral CT angiography was performed on 256 patients.Simultaneously,66 of them were also subjected to selective coronary artery angiography.Results Coronary artery branches and part sub-branches were clearly displayed in 249 patients.Stenosis was found in 201 coronary artery branches of 138 patients.In 62 cases of conventional angiography,all main branches and parts of sub-branches of the coronary artery were clearly displayed.All patients demonstrated coronary artery stenosis.The diagnosis accuracy of 64-slices spiral CT was 93.94%.Conclusion As a minimally invasive examination,64-slices spiral CT is a valuable method to detect and diagnose coronary artery diseases.