中老年人椎基底动脉在CTA上长度及内径正常值范围的研究

Study of normal range of vertebrobasilar length and internal diameter of elderly Chinese with CTA

目的:研究在CTA上我国中老年人椎基底动脉长度及内径的95%正常值范围。方法:复习2003～2008年椎基底动脉CTA检查病例,选取符合条件者86例,年龄35～75岁。于图形工作站行三维图像处理,测量椎基底动脉各段的长度及内径,进行统计学分析。结果:椎基底动脉长度正常值范围:左侧(244.80±30.27)mm,右侧(236.07±32.73)mm;基底动脉(29.53±8.26)mm。椎基底动脉内径正常值范围:左侧V1段(4.10±0.76)mm,V2段(4.15±0.63)mm,V3段(4.01±0.88)mm,V4段(3.42±0.82)mm,右侧V1段(3.98±0.79)mm,V2段(3.96±1.18)mm,V3段(3.92±0.58)mm,V4段(2.98±0.83)mm;基底动脉(3.52±0.72)mm。V4段与其他段内径差异有显著性;V4段内径及V1段长度双侧差异有显著性;椎基底动脉长度与内径均无性别差异。结论:椎基底动脉在CTA上长度及内径正常值范围可为相关研究提供正常值参考。

Objective： To study the normal range within 95% normal value of vertebrobasilar length and internal diameter of elderly Chinese with CTA. Methods： From year 2003 to 2008, 86 vertebrobasilar CTA cases were chosen to perform 3D image processing on work station and measured the length and internal diameter of segments of vertebral arteries and basilar arteries, the data was analysed by statistic. Results： The normal range of vertebrobasilar length： left vertebral artery was （244.80 ± 30. 27） ram,right vertebral artery was （236. 07±32.73） mm, basilar artery was （29.53±8. 26） ram. The normal range of vertebrobasilar internal diameter： left Vlsegment was （4.10±0. 76） mm,left V2 segment was （4.15±0.63） mm,left V3 segment was （4.01±0.88） ram,left V4 segment is （3.42±0.82） mm,right V1 segment was （3.98±0.79） mm,right V2 segment was （3.96±1.18） mm,right V3 segment was （3.92±0.58） mm,right V4 segment was （2.98±0.83）, basilar artery was （3.52± 0.72） mm. The difference between V4 segment and others segments was distinct. The internal diameter of V4 segment and the length of V1 segment had side distinct variance. Neither length nor internal diameter of vertebrobasilar artery had sex difference. Conclusion： The normal range of vertebrobasilar length and internal diameter with CTA can provide normal range for cor relative research.