1. Department of Circulation and Medical Imaging; Norwegian University of Science and Technology (NTNU); Trondheim Norway
2. St. Olav's Hospital; Trondheim University Hospital; Trondheim Norway
3. Division of Cancer Imaging Research, Russell H. Morgan Department of Radiology and Radiological Science; Johns Hopkins University School of Medicine; Baltimore MD USA
4. Sidney Kimmel Comprehensive Cancer Center; Johns Hopkins University School of Medicine; Baltimore MS USA