S形窦房结动脉的CT表现及临床意义  

CT imaging findings and clinical significance of S-shaped sinoatrial node artery

作　　者：黄明慧[1] 田本祥 张化一[1] 姜相森[1] 李小宝[1] 

机构地区：[1]山东省交通医院,山东济南250031

出　　处：《中国中西医结合影像学杂志》2013年第2期136-138,F0002,共4页Chinese Imaging Journal of Integrated Traditional and Western Medicine

摘　　要：目的:探讨256层CT评价窦房结动脉S形变异的解剖特征及其临床意义。方法:回顾性分析161例冠状动脉CTA患者的成像数据资料,研究窦房结动脉S形变异发生情况及其起源、数目、解剖走行、终止方式。结果:161例冠状动脉CTA中159例显示窦房结动脉,其中26例可见到S形变异。S形变异的窦房结动脉起源部位与左旋支开口间的平均距离为(24.37±9.32)mm。S形变异的窦房结动脉走行于左上肺静脉与左心耳之间,终止于上腔静脉口周围的窦房结组织。终止方式有上腔静脉口后方、上腔静脉口前方、多分支围绕上腔静脉口周围。结论:窦房结动脉的S形走行的解剖变异常见,256层CT冠状动脉成像能够有效显示窦房结动脉的S形变异。熟悉这一解剖特征,可降低心外科手术和经左心房介入治疗时损伤的风险。Objective： To investigate the anatomic characteristics and clinical significance of the S-shaped variant of the sinoatrial node（SAN） artery with 256 slice CT. Methods：The Anatomic origin, number, course, terminated ways and the S-shaped variant of the SAN artery were observed and analyzed retrospectively in 161 patients underwent 256 slice CT coronary angiography. Results：The S-shaped variant of the SAN artery was found in 26 cases of 159 patients. The mean distance between the origin of S-shaped variant and the ostium of the left cireumfex artery was（24.37±9.32）mm. The S-shaped variant of the SAN artery lying in a groove between the orifices of the left superior pulmonary vein and the left atrial appendage, and ap- proached the nodal tissue. Terminated ways： the posterior to the superior vena cava, anterior to the superior vena cava, and through branches surrounding the vena cava. Conclusions：256 slice CT coronary artery imaging could effectively display the S- shaped variant of the SAN artery; the S-shaped variant of the SAN artery is a common variant of the left SAN artery in pa tients. To familiar with this anatomic characteristics,could reduce the risk of injury during cardiac surgery and catheter based left atrial interventions.

关 键 词：窦房结动脉 解剖变异 冠状动脉成像 体层摄影术 X线计算机 

分 类 号：R816.2[医药卫生—放射医学]