1. From the Departments of Radiology and Nuclear Medicine (H.C.A., K.M.T, I.G.H.J., B.G.D., G.Z., B.J.E., R.v.d.B., C.B.L.M.M.), Academic Medical Center, Amsterdam, the Netherlands
2. Biomedical Engineering and Physics (H.C.A., B.G.D., H.A.M.), Academic Medical Center, Amsterdam, the Netherlands
3. Department of Radiology, Irmandade Santa Casa de Misericórdia de São Paulo, Brazil (H.C.A., B.G.D.).
4. Division of Interventional Neuroradiology, Department of Radiology, Texas Stroke Institute, Plano (A.J.Y.)
5. Department of Radiology, Catharina Ziekenhuis, Eindhoven, the Netherlands (L.Y.)
6. Department of Radiology, Erasmus MC University Medical Center, Rotterdam, the Netherlands (A.C.G.M.v.E.)
7. Departments of Neurology (I.R.v.d.W), Haaglanden Medical Center, The Hague, the Netherlands
8. Radiology (G.J.L.a.N.), Haaglanden Medical Center, The Hague, the Netherlands
9. Department of Radiology, St Antonius Ziekenhuis, Nieuwegein, the Netherlands (J.A.V)
10. Neurology (Y.B.W.E.M.R.), Academic Medical Center, Amsterdam, the Netherlands
11. Department of Neurology, University Medical Center, Utrecht, the Netherlands (W.S.)