右房峡部的影像解剖特征研究进展

Advances in Anatomical Characteristics of Cavotricuspid Isthmus Imaging

右房峡部已被证实为典型心房扑动的关键传导部位,全程线性透壁消融右房峡部是临床介入治疗典型房扑的首选策略;但右房峡部内成分构成复杂,其解剖特点是影响消融结果与预后的重要因素。近年来,随着多维超声、高分辨率计算机体层成像和磁共振在心脏成像的广泛应用和大量相关临床研究的开展,右房峡部长度增加、存在欧氏嵴以及过深的隐窝和囊袋、与下腔静脉成角增加等解剖变异均可能增加导管消融的难度,对个体而言,舒张状态下的右房峡部长度是影响消融成功率的重要因素。现就此研究进展作出综述。

Cavotricuspid isthmus （ CTI ） has been identified as a critical conduction site for the typical atrial flutter. The recommended clinical strategy is to perform a transmural linear ablation with catheter, however, the success rate of that is usually influenced by anatomical characteristics of the CTI. It is through cardiac imaging using multi-dimensional uhrasonography, CT and MR, that researchers have been a- ble to further recognize the vital effects of the anatomical characteristics of CTI. This article reviews current research on the anatomical char- acteristics of CTI and imaging.