1 Helsinki University Hospital, Department of Vascular Surgery and University of Helsinki, Helsinki, Finland. Electronic address: patrick.bjorkman@hus.fi.
2 Helsinki University Hospital, Diagnostic Center, Radiology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland; STUK - Radiation and Nuclear Safety Authority, Radiation Metrology Laboratory, Helsinki, Finland.
3 Helsinki University Hospital, Diagnostic Center, Radiology, Helsinki, Finland.
4 Helsinki University Hospital, Department of Vascular Surgery and University of Helsinki, Helsinki, Finland.