Cisternography with metrizamide of the posterior fossa following lateral C1-C2 puncture.

A report is given of a series of 23 consecutive cisternographies with metrizamide (Amipaque) of the posterior fossa using the lateral puncture at the C1-C2 level. Two to 4 ml metrizamide 300 mg I/ml were injected. The good clinical tolerance with regard to short as well as long-term effects of the contrast medium may be attributed to the low dose used and rendered possible by the selective distribution. No clinical epileptogenic seizures were observed.