 In spite of its appeal as a minimally invasive technique, MRI-guided ILT is not commonly practiced in the United States. One reason is that proper clinical implementation of ILT requires an operating room OR setting and an MRI scanner - a very rare combination. Our MRI-OR suite includes a sterile procedure room with a 0.5 Tesla vertically open magnet. In the past, we have performed MRI-guided ILT procedures in 9 patients. While few in number, this is the most extensive U.S. experience in ILT in the brain. 