1 Department of Radiology, Division of Diagnostics, Møre og Romsdal Hospital Trust, Ålesund, Norway. solveig.roth.hoff@helse-mr.no.
2 Department of Circulation and Medical Imaging, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, Trondheim, Norway. solveig.roth.hoff@helse-mr.no.