摘要
目的研究脉络丛前动脉显微解剖结构的临床应用及其意义。方法用体视显微镜和手术显微镜对21例（42侧）成人脑标本进行观察,研究脉络丛前动脉显微解剖结构特点。结果脉络丛前动脉来源于颈内动脉者37侧（88.1%）;来源于大脑中动脉者3侧（7.2%）;来源于后交通动脉者2侧（4.8%）。左侧脉络丛前动脉比右侧粗大者占78.9%。脉络丛前动脉的起始处管径变异较大,平均（0.79±0.27）mm。管径从起始部发出随行程延伸越来越细,中段管径0.35~0.71 mm;末段管径0.16~0.33 mm。脉络丛前动脉主干长（2.88±0.48）cm。海马旁回钩前沟定位与交点的距离右侧为（11.17±1.78）mm,左侧为（10.93±2.13）mm。结论双侧脉络丛前动脉管径无明显差异,发生痉挛易导致视束的供血障碍。相关颞叶内侧附近手术时,海马旁回钩前沟定位比较准确,手术时要注意在以海马旁回钩前沟为标志的交点处保护脉络丛前动脉。
Objective To explore the clinical significance of microanatomy for anterior choroidal artery.Methods Totally 21 specimens of adult brain（42 sides） were observed with micro-stereoscope and operating microscope.The microanatomical characteristics of anterior choroidal arteries were studied.Results Totally 37 sides（88.1%） of anterior choroidal arteries were from internal carotid artery,3 sides（7.2%） from middle cerebral artery,2 sides（4.8%） from posterior communicating artery.In all,78.9% of the left anterior choroidal arteries were thicker than the right ones.Significant differentces in degree of anterior choroidal arteries thickenss were found,the average thickness was（0.79±0.27） mm and the intermediate section and the ending section were 0.35～0.71 mm and 0.16～0.33 mm in width.The trunks of anterior choroidal arteries were（2.88±0.48） cm in length.The distance between anterior canal of parahippocampal gyrus and the intersection point of the anterior choroidal artery and uncus of parahippocampal gyrus was（11.17±1.78） mm on the right and（10.93±2.13） mm on the left.Conclusion Occurrence of convulsion when there is no significant difference in left and right anterior choroidal artery is prone to induce insufficient blood supply of ophthalmic tract.In the related operations for internal side of temporal lobe,protection for anterior choroidal artery should be made at its intersection with anterior canal of parahippocampal gyrus as the position of anterior canal of parahippocampal gyrus is relatively accurate.
出处
《局解手术学杂志》
2011年第2期149-150,共2页
Journal of Regional Anatomy and Operative Surgery
基金
成都医学院校管课题基金(07z034)
关键词
脉络丛前动脉
显微解剖
临床应用
anterior choroidal artery
microanatomy
clinical application
