Affiliation: | 1. Department of Radiology, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Boston, MA 02215, USA;2. Department of Neurosurgery, Tufts Medical Center, 800 Washington Street, Boston, MA 021152, USA;3. Department of Radiology, Harvard Medical School, Beth Israel Deaconess Medical Center, 1 Deaconess Road, Boston, MA 02215, USA |