(anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum
造句
Most childhood brain tumors arise below the tentorium, which is the reverse of the adult. 絕大多數(shù)兒童腦腫瘤都發(fā)生在小腦幕下，這一點與成人相反。
On this slice two venous structures related to the tentorium cerebelli are seen to be filled with contrast. 在這個層面，可以看見被造影劑填充的與小腦幕相關(guān)的兩個靜脈結(jié)構(gòu)。