A proposed alternative to the Talairach localization system

It was shown quantitatively that different head shapes can affect the location of selected anatomic structures of the brain in the Talairach proportional system. Using the MR scans of 20 subjects the variability of localization accuracy across the image plane was assessed. A new proportional system using polar coordinates is proposed that eliminates those shortcomings of the Talairach atlas which are associated with the variance of brain shape across patients.