CNS, central nervous system; CVD, cerebrovascular disease; MRI, magnetic resonance imaging. Source: Dizziness, Symptom to Diagnosis: An Evidence-Based Guide, 3e Citation: Stern SC, Cifu AS, Altkorn D. Symptom to Diagnosis: An Evidence-Based Guide, 3e; 2014 Available at: https://accessmedicine.mhmedical.com/DownloadImage.aspx?image=/data/books/1088/ste_ch14_f003.png&sec=61698215&BookID=1088&ChapterSecID=61698199&imagename= Accessed: December 31, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved