【摘要】 目的通过对颅中窝内蛛网膜颗粒的显微解剖、组织学和CT观察,进一步完善蛛网膜颗粒的形态学资料。方法分别对33例成人头颅湿标本和40例脑血管CT成像资料进行显微解剖、组织学与影像学观察。结果颅中窝内蛛网膜颗粒大多分布在脑膜中静脉窦、蝶顶窦、圆孔外侧及海绵窦,颗粒多呈圆形、椭圆形及不规则形;光镜下可将颗粒分为单个型和分叶型;显微解剖和CTV观察颅中窝内颗粒的平均数量分别为8.75和3.52个,CTV观察海绵窦内颗粒显示不清。结论对颅中窝内蛛网膜颗粒深入系统的观察,可以丰富解剖学和影像学资料;有助于神经外科手术入路的选择和手术过程中保护蛛网膜颗粒,避免术后并发症的发生。更多还原

【Abstract】 Objective To further improve the morphological materials of AGs by micro-dissection,histology and CT,we observed the arachnoid granulations(AGs)in middle cranial fossa.Methods Thirty-three adult cadaveric heads were used for microsurgical dissection;Histological sections of AG specimens from 3 cadaver heads were examined.Forty patients who had both normal conventional brain CT and computed tomographic venography(CTV)were retrospectively reviewed.Results In middle cranial fossa the AGs occur in the following situations in order of frequency:the middle meningeal sinus,sphenoparietal sinus,lateral foramen rotundum and cavernous sinus.AGs usually show round,oval in shape and irregular in shape.AGs can be divided into individual type and leaflet type under light microscope.The numbers of AGs were observed by microanatomy and CTV were 8.72 and 3.52 respectively.The AGs of cavernous sinus was not localized precisely on CTV.Conclusion Study of the AGs in the middle cranial fossa systematically and comprehensively enriches anatomy and image knowledge.It is helpful in neurosurgical planning and choosing operalion procedure to avoid postoperative complications.更多还原