Radiosurgical Lesions in the Normal Human Brain 17 Years after Gamma Knife Capsulotomy

Abstract

This investigation indicates that a minimum dose of 110 Gy, with the currently used 4-mm collimator, to the edge of the target volume is required to create a lesion. The results prove that gamma knife surgery can be used in functional neurosurgery for producing small permanent lesions in the normal human brain.