320排CT冠状动脉成像对右冠状动脉起源变异的诊断价值  

The Diagnostic Value of 320 Detector CT Coronary Artery Angiography on Right Coronary Artery Anomalous Origin

作　　者：刘红艳[1] 赵起[2] 黄俊毅[1] 杨栋梁[1] 曾庆千 关秀红[1] 

机构地区：[1]广东省清远市人民医院影像中心,511500 [2]新疆自治区人民医院放射科,830001

出　　处：《临床放射学杂志》2013年第1期65-68,共4页Journal of Clinical Radiology

摘　　要：目的探讨320排CT冠状动脉成像对于右冠状动脉起源变异的诊断价值。方法回顾性分析行320排CT、64层CT冠状动脉成像检出右冠状动脉起源变异19例的临床资料,评价两组冠状动脉变异的检出情况及图像质量、辐射剂量等差异。结果右冠状动脉起源于左冠状窦或窦上嵴为较常见的具有潜在危险的冠状动脉变异类型;CT冠状动脉成像多平面重组(MPR)、薄层最大密度投影(MIP)重组可较直观地显示右冠状动脉起源变异;320排CT冠状动脉成像在保证图像质量的基础上,能有效降低辐射剂量(P=0.000)。结论 320排CT冠状动脉成像无创、准确、辐射剂量较低,可作为冠状动脉变异的筛查手段,对于冠心病的预防及治疗具有一定的临床意义。Objective To explore the diagnostic value of 320 detector CT coronary artery angiography（CTCA） on right coronary artery anomalous origin.Methods 64 CTCA and 320 detector CTCA of 19 cases with right coronary artery（RCA） anomalous origin were retrospectively analyzed,and the differences of detection condition,image quality,and effective dose（ED） were evaluated in two groups.Results RCA originated from left coronary artery sinus or sinus crista was more frequent coronary artery anomalies.MPR and minimum MIP were often used to assess RCA anomalous origin clearly.There was no significant difference in the image quality score between the two groups（P=0.100）.However,the average ED in 320 CTCA were lower than those in 64 CTCA group（P=0.000）.Conclusion 320 CTCA is a noninvasive,accurate and low effective dose method for screening congenital coronary artery anomalies,which has certain clinical significance on precaution and treatment of coronary heart disease.

关 键 词：冠状动脉 先天性变异 辐射剂量 体层摄影术 X线计算机 

分 类 号：R816.2[医药卫生—放射医学]