Fig. 8
From: Gross pathology of brain mass lesions by intraoperative ultrasonography: a comparative study
Imaging of intraventricular tumors by MRI T1, CT and IOUS. White arrows refer to the tumor. Case a: Intraventricular epidermoid tumor; hypo-intense in MRI T1, hypo-dense in CT, and heterogeneous echogenicity in IOUS. Case b: Intraventricular choroid plexus papilloma; homogenous enhancement in MRI T1, hypo-dense in CT and homogenous hyper-echogenicity in IOUS. Case c: Intraventricular ependymoma; heterogeneous enhancement in MRI T1, hyper-dense in CT and heterogeneous echogenicity in IOUS. Case d: Intraventricular medulloblastoma; hypo-intense in MRI T1, hypo-dense in CT, and homogenous hyper-echogenic in IOUS