冠状动脉先天性变异与畸形的CT表现

CT findings of congenital variation and malformation of coronary artery

目的:研究冠状动脉先天性变异与畸形的CT表现。方法:以本院1 402例行冠脉CTA的患者为研究对象,采用前置性门控成像序列扫描,利用各种后重建技术对原始资料分析,总结冠脉先天性变异与畸形的CT表现。结果:本研究共发现冠脉先天性变异与畸形364例,左主干缺如1例,左主干短小3例(其中1例合并副冠状动脉),副冠状动脉或第三冠状动脉2例,右冠起源于左冠状窦7例,单一冠状动脉1例,冠脉异常吻合1例,右后降支冠状动脉瘤并左心房憩室1例,冠状动脉瘤样扩张3例,冠脉动脉迂曲20例,心肌桥-壁冠状动脉325例。结论:宝石CT前置性门控技术扫描既可以大幅降低冠脉CTA的辐射剂量又可以准确清晰显示冠状动脉先天性变异与畸形。

Objective： To research the CT findings of congenital variation and malformation of coronary artery. Methods： There were 1 402 patients who had underwent prospective ECG-triggering coronary CTA in our hospital were enrolled this study. We reconstructed the raw data by several post-processing techniques and summarized the CT findings of congenital variation and malformation of coronary artery. Results： We found 364 cases of variation and malformation of coronary artery in this study, including one case of absence of left main coronary artery, 3 cases of short left main coronary artery and one of them has accessary coronary artery, 3 cases of accessary coronary artery or third coronary artery, 7 cases of right coronary o- riginated from the left coronary sinus, one case of single coronary artery, one case of abnormal coronary artery anastomosis, one case of the fight posterior descending coronary artery aneurysm with left atrial diverticulum, three cases of coronary artery aneurysm, 20 cases of coronary artery tortuosity, 325 cases of myocardial bridge-mural coronary artery. Conclusion： Prospec- tive ECG-triggering coronary CTA can significantly reduce the radiation dose of coronary CTA and can accurately and clearly show the variation and malformation of coronary artery.