CAJ | 학술논문

目的：分析64层螺旋CT冠状动脉扫描中影响成像质量的各种因素。方法对89例怀疑冠心病或冠心病复查患者进行64层螺旋CT冠状动脉检查，回顾性分析成像质量，探讨心率及心率波动对冠脉成像质量的影响，pitch值与心率的关系,替代（override）功能的应用价值，从而优化扫描参数。结果心率及心率波动与冠脉成像质量成负相关；心率与扫描/重建方式及pitch值存在相互对应关系；心率替代功能的合理使用可以提高CT冠状动脉的成像质量。结论通过控制心率及心率波动，选择心率替代功能，采取适当的扇区扫描/重建模式可以提高图像质量和冠状动脉诊断的可靠性。
목적：분석64층라선CT관상동맥소묘중영향성상질량적각충인소。방법대89례부의관심병혹관심병복사환자진행64층라선CT관상동맥검사，회고성분석성상질량，탐토심솔급심솔파동대관맥성상질량적영향，pitch치여심솔적관계,체대（override）공능적응용개치，종이우화소묘삼수。결과심솔급심솔파동여관맥성상질량성부상관；심솔여소묘/중건방식급pitch치존재상호대응관계；심솔체대공능적합리사용가이제고CT관상동맥적성상질량。결론통과공제심솔급심솔파동，선택심솔체대공능，채취괄당적선구소묘/중건모식가이제고도상질량화관상동맥진단적가고성。
Objective To analyze the inlfuencing factors of image quality of coronary angiography with 64-slice CT.Methods Eighty-nine patients with known or suspected CAD underwent CT coronary angiography using 64 multi-slice CT. The image quality in those cases was analyzed retrospectively to evaluate the influence of heart rate, fluctuation of heart rate during the scanning. The relationship between heart rate and the value of pitch was analyzed, and the application value of the override function was discussed.Results① The patient’s heart rate and lfuctuation were negatively related to the coronary image quality.② There was corresponding relationship between the value of pitch and segment scan/reconstruction mode according to the heart rate.③ Correct use of override function could improve the image quality of coronary.Conclusion The appropriate control of heart rate and lfuctuation, the correct use of override function, and the corresponding selection of segment scan/reconstruction mode according to the heart rate could improve the image quality and reliability of coronary angiography.