脳底静脈，ガレン大静脈，直静脈洞

Basal Vein of Rosenthal, Vein of Galen, and Straight Sinus

Point

・脳底静脈，ガレン大静脈，直静脈洞は，深部静脈と表在静脈，静脈洞をつなぐ静脈の交通路として重要である．

・脳底静脈は特に多岐の領域をつないでいるが，バリエーションが存在し，それにより静脈還流の経路が変わってくるので注意を要する．

・脳血管内治療の際にはこれらの領域の構造を理解し，血管閉塞や静脈還流の変化に留意する．

　The basal vein of Rosenthal, the vein of Galen, and the straight sinus are important venous communication routes connecting the deep, superficial, and dural sinuses. The basal vein is divided into three parts since it originates secondarily from three different areas and its venous areas are diverse. However, care should be taken because disconnection between these segments causes variations that change the venous flow path. Endovascular treatment warrants a proper understanding of this anatomical area and requires consideration of vascular occlusion and venous drainage changes.