1. Department of Circulation and Medical Imaging, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
2. Department of Radiology and Nuclear Medicine, St. Olavs Hospital, Trondheim, Norway
3. Norwegian National Advisory Unit on Ultrasound and Image-Guided Therapy, St. Olavs Hospital, Trondheim, Norway
4. Department of Health Research - Medical Technology, SINTEF, Trondheim, Norway