1 Department of Radiology, Northwestern University-Feinberg School of Medicine, 676 North St. Clair Street, Suite 800, Chicago, IL 60611. Electronic address: faezeh.sodagari@northwestern.edu.
2 Department of Neurosurgery, Northwestern University-Feinberg School of Medicine, 676 North St. Clair Street, Suite 1300, Chicago, IL 60611.