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目的总结16层螺旋CT冠状动脉(简称冠脉)重建成像在冠状动脉疾病诊断中的临床意义。方法回顾分析60例患者所做的16层螺旋CT冠脉重建图像。采用回顾性心电门控技术、分段(Segment)数据采集方式和选择75%的时间相位窗,对扫描数据进行容积再现技术(VRT)、最大密度投影(MIP)、多平面重建(MPR)、曲面重建(CPR)、CT仿真内镜(CTVE)等图像后处理。结果60例患者2例冠脉成像不良,不能用于影像诊断;33例冠脉成像未提示明确异常;21例冠脉成像提示有不同程度的冠脉病变;4例4枚支架有两枚支架显示通畅,1枚支架疑有软斑块形成,1枚支架阻塞。结论16层螺旋CT冠脉重建成像能较好地显示冠脉管腔II～III度狭窄情况及冠脉斑块形成情况,较好地评估冠脉支架植入情况,在早期发现和诊断冠心病及对高危人群进行普查方面有较高的临床应用价值,是一种较有效的无创性冠脉疾病检查诊断方法。
Objective To summarize the clinical significance of 16-slice spiral CT coronary angiography (CAD) in the diagnosis of coronary artery disease. Methods The 16-slice spiral CT coronary angiography images of 60 patients were retrospectively analyzed. Retrograde ECG gating technology, Segment data acquisition method and 75% time phase window were selected to perform volume rendering (VRT), maximum density projection (MIP), multiplanar reconstruction (MPR) , Surface reconstruction (CPR), CT simulation endoscopy (CTVE) and other image processing. Results Two cases of 60 patients had poor coronary angiography, which could not be used for imaging diagnosis. Thirty-three cases of coronary angiography did not show clear abnormality. 21 cases of coronary angiography showed different degree of coronary artery lesion. Four cases of four stents had two stents Unobstructed, a stent suspected soft plaque formation, a stent blockage. Conclusion 16-slice spiral CT coronary angiography can better show the II ~ III degree of coronary stenosis and coronary plaque formation, better assessment of coronary stent implantation, early detection and diagnosis of coronary heart disease And high-risk populations in the census has a higher clinical value, is a more effective method of non-invasive diagnosis of coronary artery disease.