title: CT metrizamide myelography in syringomyelia: sensitivity and specificity.
abstract: In a retrospective study of 32 patients with "proven" syringomyelia and 15 patients with an alternate proven diagnosis, a change in the caliber of the spinal cord with different positions ("collapsing cord sign or cord collapse") had a sensitivity of 38% and a specificity of 87%. Central cord enhancement ("bull's-eye") on delayed CT had a sensitivity and specificity of 91% and 87%, respectively. The positive predictive value of cord collapse was 87%, while the positive predictive value of central cord enhancement was 94%.
mesh_terms: D006801:Humans; D008793:Metrizamide; D009192:Myelography; D013595:Syringomyelia / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed
chemical_list: D008793:Metrizamide