Quantified analysis of a carotid angiogram.

To compensate for differences in anatomy and magnification, a hand-held programmable calculator remodels the profile of the lateral view of a skull to fit the outline of a reference skull. The statistical analysis of 85 normalized carotid angiograms yeilds a numbered map of supratentorial structures. It is then possible to obtain, within 20 min and without sophisticated equipment, an objective analysis of any new angiogram.