the fouth ventricle的用法和樣例：
例句
- Here is an ependymoma arising from the ependymal lining of the fourth ventricle above the brainstem and bulging toward the cerebellum.
發生在腦幹之上第四腦室室管膜的室管膜瘤。 - MR images show a lesion involving the right second frontal convolution and another in the cerebellum, near the fourth ventricle, also visible on the sagittal imagemap.
磁共振示病變一處涉及右側第二額回，另一處涉及小腦，接近第四腦室，在矢狀面影像上也能看見。
