title: Reply.
authors.affiliation: Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
authors.forename: Mirko
authors.initials: M
authors.lastname: Pham
authors.affiliation: Department of Medicine I and Clinical Chemistry, Heidelberg University Hospital, Heidelberg, Germany.
authors.forename: Peter P
authors.initials: PP
authors.lastname: Nawroth
authors.affiliation: Department of Neuroradiology, Heidelberg University Hospital, Heidelberg, Germany.
authors.forename: Martin
authors.initials: M
authors.lastname: Bendszus