CHIARI MALFORMATIONS RADIOLOGY CT MRI скачать в хорошем качестве

CHIARI MALFORMATIONS RADIOLOGY CT MRI

Group of congenital defects ass varying degree caudal displacement of post fossa contents into cervical canal. Caudal tonsillar herniation (≥ 5 mm below BO line) Pointed, peg-like tonsils with angled folia “Crowded” foramen magnum on axial Small, shallow posterior fossa Inferiorly herniation medulla, vermis and choroid plx of 4th v into cervical canal Cervicomedullary spur” upward displacement of cerebellum and vermis --“Towering” and “creeping” cerebellum compression of quadrigeminal plate by superiorly displaced cerebellum --Tectal beaking “fourth ventricle--- elongated and thin “Soda straw” Hydrocephalus (90%) Lacunar skull