[Local variation of brain structures related to C. T. reference line (author's transl)].

Median sagittal sections of the cranium of 18 males and 7 females aging from 42 to 74 years were investigated. The distance of brain structures from the skull varied about 11 to 22 mm if the orbitomeatal line is used as reference. A correlation coefficient below 0.5 is found between distances on the outside of the skull and on the median sagittal section as well in horizontal as in the vertical direction. The statistical deviation of the outline of the brain is less extended with an intracerebral reference line than with reference points on the outer surface of the skull. The localization of several telencephalic parts are correlated with the inclination angle of the brain stem. The long axis of the brain stem therefore appears to be the best reference line for localization of brain structures.