PRIMARY CEREBELLAR AND SPINO-CEREBELLAR ATAXIA AN MRI STUDY ON 63 CASES

63 patients with primary cerebellar and spinocerebellar ataxia have be en studied with MRI. This method allows to identify in vivo different groups of diseases such as that characterized by atrophy of cerebellum alone; that with atrophy of cerebellum associated with braistem chang es; the forms with associated changes of basal ganglia; the forms with spinal cord atrophy alone, as well as transitional forms. An interest ing correlation between the varying groups and the type of inheritance was found, while no correlation with other clinical aspects was obser ved.