1 Department of Medical Imaging, University of Saskatchewan, 103 Hospital Drive, Saskatoon, SK S7N 0W8 Canada. Electronic address: scott.adams@usask.ca.
2 Department of Medical Imaging, University of Saskatchewan, 103 Hospital Drive, Saskatoon, SK S7N 0W8 Canada.
3 Department of Surgery, University of Saskatchewan, 107 Wiggins Road, Saskatoon, SK S7N 5E5 Canada.