4.Objective: To study the chordae and arachnoid granulations in the lumen of superior sagittal sinus and torcular herophili by endoscope and microscope.

• 摘要目的：通过内窥镜及显微镜观察成年人上矢状窦、窦汇窦腔及其内的纤维索、蛛网膜颗粒结构的解剖学形态特征。