多层螺旋CT在房颤射频消融术前的应用  

The role of multislice CT before radiofrequency ablation of atrial fibrillation

作　　者：康瑜[1] 何奔[1] 张彦周[1] 毛定飚[2] 

机构地区：[1]上海交通大学医学院附属仁济医院心内科,200127 [2]复旦大学附属华东医院放射科,200040

出　　处：《上海医学影像》2009年第4期292-293,F0003,共3页Shanghai Medical Imaging

摘　　要：目的评价应用多层螺旋CT在房颤射频消融术前观察肺静脉形态结构的可行性。方法对71例房颤患者进行64层螺旋CT检查及肺静脉造影检查,并测量肺静脉数量、开口大小。结果CT共显示290根肺静脉,59例(83.1%)患者有典型的左上、下肺静脉和右上、下肺静脉4个心房开口。9例(12.9%)有单独心房开口的副肺静脉。3例(4%)为左肺静脉共干。肺静脉造影显示283根肺静脉。各肺静脉开口平均直径不同,CT及肺静脉造影测量肺静脉直径无显著差异。结论应用多层螺旋CT可清晰显示肺静脉的形态结构,有助于提高射频消融治疗房颤的成功率,减少并发症。Objective To evaluate the feasibility of the demonstration for morphologic characteristics of pulmonary vein with multislice CT before radiofrequency ablation of atrial fibrillation.Methods 71 patients undergoing catheter-based PV isolation procedures for atrial fibrillation had their PV ostial anatomy determined by 64-slices CT angiography and venography.The number of pulmonary vein and maximal dimension of the PV ostia were determined by each imaging modality.Results 59 patients（83.1%） had typical pattern of pulmonary veins with four separate orifice for bilateral upper and lower pulmonary veins,respectively.9 patients（12.9%） had accessory pulmonary veins.3 patients（4%）had a common left pulmonary vein.Mean diameters of pulmonary veins at the orifice were variable.CT measures of PV diameter were correlated with measures by venography.Conclusion MSCT can clearly display morphologic characteristics of pulmonary vein,and provide higher successful rate of RFCA for AF with decrease of complications.

关 键 词：心房纤维颤动 肺静脉 体层摄影术 X线计算机 肺静脉造影 

分 类 号：R814.42[医药卫生—影像医学与核医学] R541.71[医药卫生—放射医学]