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胚胎型大脑后动脉与颈内动脉及基底动脉内径的关系:3.0T高场3D-TOF-MRA解剖学分析 被引量:2

Relationship between fetal-type posterior cerebral artery and internal carotid artery and basilar artery:An anatomy analysis on 3.0 T 3D time of flight MRA
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摘要 目的探讨胚胎型大脑后动脉的存在对同侧大脑前动脉、颈内动脉和基底动脉内径可能的影响,为影像学分析提供参考信息。方法对50例来院接受3.0T3D-TOF-MRA检查者的检查结果进行回顾性分析。于最大密度投影法三维重建结果上测量后交通动脉、大脑后动脉P1段、大脑前动脉A1段、颈内动脉和基底动脉的内径,以统计学分析探索胚胎型大脑后动脉的出现是否对各目标血管的内径产生影响。结果本研究中20%的样本具备胚胎型大脑后动脉(10/50)。根据本研究结果,尚不能认为胚胎型大脑后动脉的存在伴随着大脑前动脉A1段正常率的变化。与不具备右侧胚胎型大脑后动脉的样本相比,具备右侧胚胎型大脑后动脉者的同侧颈内动脉内径较大(t=-2.108,P=0.040),而基底动脉内径较小(t=2.935,P=0.005)。左侧有胚胎型大脑后动脉组和无胚胎型大脑后动脉组间左侧颈内动脉内径的差异无统计学意义。左侧有胚胎型大脑后动脉组和无胚胎型大脑后动脉组间基底动脉内径的差异无统计学意义。结论胚胎型大脑后动脉并非少见。根据本研究结果,右侧胚胎型大脑后动脉的存在伴有右颈内动脉和基底动脉内径的改变。 Objective To discuss the possible influence of the existence of fetal-type posterior cerebral artery(FTP) on the diameters of anterior cerebral artery(ACA) on the same side,internal carotid artery(ICA) on the same side and basilar artery (BA) in order to provide reference information for performing medical imaging analysis.Methods A retrospective analyse was performed on 50 cases examined by 3.0 T 3D-TOF-MRA in the hospital.Artery diameters of the posterior communicating artery,posterior cerebral artery P1 segment,ACA A1 segment,ICA and BA were measured on maximum intensity projection(MIP) images.Statistic methods were used to explore whether these diameters were influenced by the existance of FTP.Results 20% (10/50) of the cases had at least 1 fetal-type posterior cerebral artery.According to the results of this study,it was not concluded that whether FTP comes with a different prevalence of A1 hypogenesis.Right FTP comes with a larger right ICA diameter(t =-2.108,P =0.040) and a smaller BA diameter (t =2.935,P =0.005).There was no statistically significant difference between the left ICA diameters of the FTP group and the No FTP group.There was no statistically significant difference between the BA diameters of the FTP group and the No ~ group.Conclusions FTP is common.The existence of right FTP is accompanied by changes of right ICA diameter and BA diameter.
出处 《中华临床医师杂志(电子版)》 CAS 2013年第3期58-61,共4页 Chinese Journal of Clinicians(Electronic Edition)
关键词 大脑后动脉 解剖学 大脑动脉环 磁共振血管造影术 Posterior cerebral artery Anatomy Circle of willis Magnetic resonance angiography
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