摘要: I. GENERAL CONSIDERATIONS Since the introduction of cerebral pneumography by Walter E. Dandy,1many works bearing on interpretation pneumogram have been forthcoming.2The use in diagnosis indeed made it possible to transform what would be for many patients an exploration brain into pathologic condition brain. The pneumograph is instrument precision, and as such its safety usefulness will proportional specialized knowledge experience. day has passed criticism basis inherent dangers. When one compares tragic nature intracranial disease requiring surgical intervention with treasured information that provides, latter no danger. I adopted policy attempting fill ventricular spaces completely air, so obtain complete a ventriculogram under circumstances.