1 Department of Radiology, University of Ottawa, 1053 Carling Avenue, K1Y 0E9. C1 Radiology, Ottawa, ON, Canada. Electronic address: nschieda@toh.ca.
2 Section of Abdominal Imaging and Nuclear Radiology Department, Diagnostic Radiology, and Glickman Urological and Kidney Institute Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195, USA. Electronic address: puryska@ccf.org.