Gamma knife

The radiosurgery called gamma knife seems to be the most modern(and unproven) procedure for GPN. Anyone else have any info? also here are three reputabe websites, two on microvascular decompression, and one on gamma knife.
http://www.ncbi.nlm.nih.gov/pubmed/9452227
http://www.aans.org/Media/Article.aspx?ArticleId=12231
http://www.ncbi.nlm.nih.gov/pubmed/20849803
Jimmy