Applications of magnetic source imaging to presurgical brain mapping.

This article highlights the patient benefits of noninvasive presurgical mapping using magnetic source imaging, discusses magnetic source imaging in terms of its practical implementation and current limitations in mapping the human cerebral cortex, and illustrates the use of magnetic source imaging in ongoing clinical studies. An overview of preliminary research studies that have attempted to evaluate the accuracy and cost-effectiveness of magnetic source imaging in presurgical mapping is also provided.