1 German Cancer Research Center (DKFZ), Department of Radiology, Heidelberg, Germany; Department of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany. Electronic address: a.radbruch@dkfz.de.
2 Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC, USA.
3 Department of Radiology, Assistance Publique Hôpitaux de Paris, Hôpital Européen Georges Pompidou, Paris, France; INSERM UMR 970, Université Paris Descartes, Paris, France.
4 Section of Neuroradiology, Vall d'Hebron University Hospital, Barcelona, Spain.
5 Departmental Faculty of Medicine and Surgery, Università Campus Bio-Medico di Roma, Rome, Italy.