Planigraphic measurement of angiograms and pneumencephalograms in the diagnosis of hydrocephalus.

Instead of the usual descriptive criteria commonly adopted for angiographic assessment of hydrostatic hydrocephalus, planimetric measuring methods were tried out. It was shown that the surface area under the anterior cerebral artery (pericallosal) as measured in the lateral angiogram increases proportionally to the volume of the cella media. A high degree of conformity was shown between the clinical and descriptive neurological findings and the planimetrically obtainable values.