双源CT窦房结动脉的活体解剖学研究  

In Vivo Visualization of Sinus Node Artery Using Dual Source CT

作　　者：张龙江[1] 卢光明[1] 陈鹏[1] 周长圣[1] 李林[1] 黄伟[1] 

机构地区：[1]南京军区南京总医院医学影像科,江苏南京210002

出　　处：《临床放射学杂志》2008年第11期1492-1496,共5页Journal of Clinical Radiology

摘　　要：目的利用双源CT(DSCT)活体评价窦房结动脉(SNA)的三维解剖关系。资料与方法搜集101例行DSCT并且具有可评价的冠状动脉影像质量的患者资料。观察SNA的显示率及其解剖学类型,测量其直径及起点与冠状动脉开口的距离。结果SNA的显示率为95.2%(96/101)。96例患者中,DSCT检测到106支SNA,来自右冠状动脉者51支(48.1%,51/106),来自左冠状动脉回旋支52支(49.1%,52/106),来自左室后支、右冠状窦口和左冠状动脉主干各1支(0.9%,1/106)。SNA分为右SNA(n=52)、左SNA(n=45)和后SNA(n=9)。右SNA距相应右冠状窦口的距离为(16.4±9.5)mm,左SNA距回旋支开口距离为(5.5±3.5)mm,后SNA距离旋支开口约(33.7±12.8)mm;平均直径为(1.27±0.29)mm。SNA以腔静脉后型(51.5%)、腔静脉前型(26.2%)、包绕腔静脉型(22.3%)三种路径到达窦房结。结论利用DSCT可以无创性显示SNA,对了解SNA的起源、走行、终止以及解剖类型有重要价值。Objective To in vivo visualize three dimensional anatomical relation of sinus node artery （SNA） using dual source CT （DSCT）. Materials and Methods 101 patients who underwent DSCT with assessable image quality of coronary artery, were included into this study. We observed visualization rate, anatomical types, and diameters of SNA, and the distance between the orifice and coronary artery. Results Visualization rate of SNA was 95.2% （ 96/101 ）. Of 96 patients, 106 SNAs were detected among which 51 SNAs （ 48.1% ,51 / 106 ） originated from right coronary artery （RCA） ,52 SNAs （49.1% ,52/106） from left circumflex artery （LCX） , 1 （0.9% , 1/106） from left posterior ventricle branch,right coronary sinus, and left main stem, respectively. SNA was classified into three types ： right SNA （ n = 52 ） , left SNA （ n = 45 ） ,and posterior SNA （n = 9 ）. The distance between orifice of right SNA and right coronary sinus was 16.4 ± 9.5 ram, the left SNA,5.5 ± 3.5 ram;and posterior SNA,33.7 ± 12.8 ram. Average diameter of SNA was 1.27 ± 0.29 mm. The SNA approached the nodal tissue by one of three routes including retrocaval （ 51.5% ）, precaval （ 25.2% ）, or pericaval （22.3 % ）. Conclusion SNA can be visualized in vivo using DSCT, DSCT has an important role for detecting the origin, course, termination, and anatomical types of SNA.

关 键 词：窦房结动脉 体层摄影术 X线计算机 冠状动脉疾病 

分 类 号：R816.2[医药卫生—放射医学]