1. Department of Radiology Brigham and Women's Hospital Boston Massachusetts USA
2. Harvard Medical School Boston Massachusetts USA
3. Institute of Neuroradiology University Medical Center Göttingen Göttingen Germany
4. Department of Neuroradiology Heidelberg University Hospital Heidelberg Germany
5. Department of Biomedical Engineering Boston University Boston Massachusetts USA
6. Ann Romney Center for Neurologic Diseases Brigham and Women's Hospital Boston Massachusetts USA
7. School of Biomedical Imaging and Imaging Sciences King's College London London UK
8. INSERM U1148, Laboratory for Vascular Translational Science University Paris Diderot, University Paris 13 Paris France