1. Department of Radiology, Stanford University, Stanford, California.
2. Department of Neurosurgery, Stanford University, Stanford, California.
3. Department of Diagnostic and Interventional Neuroradiology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
4. Department of Radiology, Uniformed Services University of the Health Sciences, Bethesda, Maryland.
5. Department of Radiology, Tripler Army Medical Center, Honolulu, Hawaii.
6. Department of Radiology, Madigan Army Medical Center, Tacoma, Washington.
7. Penn Image Computing and Science Laboratory (PICSL), Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania.
8. Department of Neurology and Neurological Sciences, Stanford University, Stanford, California.
9. Department of Bioengineering, Stanford University, Stanford, California.