[Computer-tomographic anatomy of the posterior cranial fossa]

Bony basis of the posterior cranial fossa (PCF) was studied on the spiral computer tomograms of 160 patients of both genders without skull bone and brain pathology. Fundamental PCF radiometric parameters (length, width, depth) were determined. According the variants of combination of extreme values of these parameters, 5 most common forms of PCF were distinguished (long narrow deep, long broad shallow, long narrow shallow, long broad deep, short narrow shallow); their linear and angular radiometric characteristic was presented. Radiometric parameters which are significant for the individual planning of operative approaches to CFP structures, were noted.