64层螺旋CT对肺静脉变异及肺静脉孔的形态学评价

Morphologic evaluation of pulmonary venous variations and pulmonary vein ostia with 64-slice spiral CT

目的:研究肺静脉与左心房连接变异及肺静脉孔的大小、形状。方法:收集103例排除影响肺静脉疾病的影像资料,分析肺静脉与左心房连接类型,测量肺静脉孔长短径,计算肺静脉孔指数。结果:标准4支肺静脉占78.6%(81例),上肺静脉孔长短径大于下肺静脉孔,右上肺静脉孔长短径大于左上肺静脉孔,右下肺静脉孔长短径大于左下肺静脉孔(P<0.05);右肺静脉孔指数大于左肺静脉孔,左上、下肺静脉孔指数差异无统计学意义(P=0.773>0.05),其余数据有统计学意义;男性肺静脉孔较女性大,男女性肺静脉孔指数差异无统计学意义(P>0.05)。结论:肺静脉解剖变异较大,各肺静脉孔大小、形状不同;64层螺旋CT能为射频消融治疗房颤及胸外科手术提供肺静脉解剖学基础。

Objective： To document the variations in pulmonary venous drainage to the left atrium and the size and shape of pulmonary vein （PV） ostia adopting image skill. Methods： The data of one hundred and three patients without affecting PV disease were collected in this study. Pulmonary venous drainage patterns to the left atrium were analysed. The caliber ofPV ostia were measured at workstation and venous ostial index（VOI） were calculated. Results： Most patients（n=81,78.6%） had four standard PVs. the caliber of the superior PV ostia was larger than that of the inferior PV ostia. The right superior PV ostia was larger than the left superior PV ostia and the right inferior PV ostia was larger than the left inferior PV ostia （P〈0.05）. The VOI of the right was larger than that of the left. The VOI between the left superior and inferior PV were similar （P=0.773〉0.05） and the other data were different. The caliber of PV ostia in men was larger than that in women. The VOI between mem and women were similar （P〉0.05）. Conclusions： The PVs have great anatomic variations. There is significant variability in PV ostial caliber and shape. 64-slice spiral CT angiography can provide valuable information on pulmonary venous anatomy for ablation procedures and thoracic surgery.