1. SINTEF Fisheries and Aquaculture Ltd., N-7465 Trondheim, Norway; Cancer Clinic, St. Olav University Hospital, 7006 Trondheim, Norway; Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), N-7489 Trondheim, Norway; and MRi_Consulting, 8 Wilmot Street, Kingston, Ontario, Canada K7L 4V1