[1] Univ Saskatchewan, Dept Med Imaging, Saskatoon, SK, Canada
[2] Western Univ, Schulich Sch Med & Dent, Dept Med Imaging, London, ON, Canada
[3] Univ Alberta, Dept Radiol & Diagnost Imaging, Edmonton, AB, Canada
[4] Baylor Coll Med, Dept Radiol, Houston, TX 77030 USA
[5] Univ Manitoba, Dept Diagnost Radiol, Winnipeg, MB, Canada