Chehrazi B, Virapongse C
J Neurosurg. 1981 Nov;55(5):826-9. doi: 10.3171/jns.1981.55.5.0826.
A case is presented in which cervicolumbar myelography with metrizamide was followed by transient encephalopathy and asterixis. Metabolic etiology was excluded. A large degree of intracranial penetration of metrizamide was demonstrated by computerized tomography. Residual symptoms persisted for 10 days.