Arachnoid Granulations: Radiology and Anatomy

Abstract

The arachnoid impressions in the skull vault were studied on skull radiographs of patients of various ages. The relationships of the superior superficial cerebral veins and the lacunae laterales tu the arachnoid granulations were demonstrated in the venous phases of carotid angiograms. The cortical veins either coursed into the bony arachnoid impressions or around the margins of the impressions to enter the superior sagittal sinus. Anatomical specimens of the dura, granulations and superior sagittal sinus were studied by injection and dissection techniques to show the relationship of the superior superficial cerebral veins, the lacunae laterales, and the arachnoid granulations.