Evaluation of the Spatial Accuracy of Magnetic Resonance Imaging-based Stereotactic Target Localization for Gamma Knife Radiosurgery of Functional Disorders

Abstract

The spatial accuracy of an MRI-based localization system can be comparable to computed tomography-based localization with the added benefit of MRI resolution. Both machine- and object-related MRI distortions can be reduced to an acceptable level with contemporary scanners, optimized scanning sequences, and distortion-resistant stereotactic instruments.