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Ventriculography offers the neurosurgeon a very valuable means of localizing what would otherwise be an unlocalizable brain tumor. The operation, however, is attended with a certain amount of risk. It was with the idea of reducing this risk to a minimum that certain refinements in the technic of the operation were evolved.
In the early days of roentgenography of the ventricles, it was the custom to withdraw the ventricular fluid by a syringe through a cannula placed in the posterior horn of each lateral ventricle. As the fluid was withdrawn in 10 cc. amounts, it was followed by the injection of a similar amount of air. When no more fluid could be obtained, the cannulas were withdrawn and the wounds closed, and the patient was sent to the x-ray room. Probably the most serious objection to this method is the marked fluctuation in the intraventricular pressure occasioned by the use
Gardner WJ, Frazier CH. VENTRICULOGRAPHY WITHOUT AIR INJECTION. JAMA. 1929;93(3):193–194. doi:10.1001/jama.1929.27110030001012