[1] Peterborough Reg Hlth Ctr, Dept Diagnost Imaging, Peterborough, ON K9J 7C6, Canada
[2] Univ Western Ontario, Dept Radiol, London, ON, Canada
[3] Lahey Clin Med Ctr, Dept Radiol, Burlington, MA 01803 USA
[4] Univ Calif San Diego, Med Ctr, San Diego, CA 92103 USA
[5] Scarborough Gen Hosp, Dept Med Imaging, Richmond Hill, ON, Canada
[6] NCI, Canc Imaging Program, Bethesda, MD 20892 USA
[7] Univ Colorado, Hlth Sci Ctr, Dept Radiol, Denver, CO 80262 USA
[8] Emory Univ Hosp, Dept Radiol, Atlanta, GA 30322 USA
[9] St Lukes Roosevelt Hosp, New York, NY USA
[10] Reading Hosp Med Ctr, Reading, PA USA