正常肺静脉经胸超声心动图与64层螺旋CT对比定位观察

目的 探讨经胸超声心动图显示肺静脉及对4条肺静脉定位的有效方法.方法 选取同时行肺静脉CT血管造影检查及超声心动图检查的拟行心房颤动消融患者12例.进行CT三维图像后处理分析,观察4条肺静脉与相邻重要解剖结构的空间位置关系,同时对比分析CT三维图像后处理相关断层与超声心动图切面.结果 12例患者肺静脉螺旋CT血管造影成像均清晰显示,且无结构异常及解剖变异.右上肺静脉开口紧邻房间隔,近端与上腔静脉相邻.右下肺静脉相对于右上肺静脉稍远离房间隔,位于右侧.左上肺静脉紧邻左心耳.左下肺静脉相对于左上肺静脉远离左心耳,靠近胸降主动脉.超声心动图标准切面左心室长轴、大动脉短轴、心尖四腔观在调整探头的基础上可以显示4条肺静脉.结论 经胸超声心动图可以显示4条肺静脉,参照邻近重要的解剖结构可以对4条肺静脉进行空间位置定位.

The pulmonary veins located by thansthoracic echocardiography in comparison with 64-slice spiral CT

Objective To explore the important anatomic structures associated with pulmonary veins and similar sections to transthoraeic echocardiography using 64一slice spiral CT and tO locate the pulmonary veins on echocardiography. Methods The transthoracic echocardiography and 64-slice spiral CT were performed in 12 patients with atrial fibrillation.The 3-dimensional information of four pulmonary veins on CT was analyzed and the relationship between the locations of four pulmonary veins and adjacent anatomic structures were observed.The comparison of CT and echocardiography for assessing the location of pulmonary veins was performed.Results All of the pulmonary veins were demonstrated optimally without abnormal structures and anatomic variations.The ostium of right superior pulmonary vein adjoined the atrial septum and the proximal of the right superior pulmonary vein was near to the superior vena cava.The right inferior superior pulmonary was a little bit far from atrial septum.The left superior pulmonary vein adjoined the left atrial auricle.The left inferior pulmonary vein was a little bit far from the 1eft atrial auricle and adjoined the thoracic descending aorta.According to adjusting the angle of the probe on echocardiography,the four pulmonary veins could be demonstrated in the standard parasternal left ventricular long-axis view, parasternal short-axis view and apical four chamber view.The non-standard views assisted in identifying the pulmonary veins.Conclusions Transthoracic echocardiography can demonstrate all the four pulmonary veins and also locate the spatial location based on the adjacent anatomic structures.