Fig. 11From: The Filum disease and the Neuro-Cranio-vertebral syndrome: definition, clinical picture and imaging featuresDescent of the cerebellar tonsils (DCT) in relation to FM, posterior arch of C1 and C2, in the selected 373 patients. CT = cerebellar tonsils; FM = foramen magnum; C1 = first cervical vertebraBack to article page