[1] Northeastern Ohio Med Univ, Dept Radiol, Rootstown, OH 44272 USA
[2] Southwoods Imaging, Boardman, OH 44512 USA
[3] Univ Pavia, Ultrasound Unit, Dept Infect Dis, Fdn IRCCS Policlin San Matteo, I-27100 Pavia, Italy
[4] Duke Univ, Pratt Sch Engn, Dept Biomed Engn, Durham, NC USA
[5] Inova Fairfax Hosp, Ctr Liver Dis, Falls Church, VA USA
[6] Yale Univ, Dept Med, Sect Digest Dis, New Haven, CT 06520 USA
[7] VA Connecticut Healthcare Syst, West Haven, CT USA
[8] Univ Michigan, Med Ctr, Dept Radiol, Ann Arbor, MI 48109 USA
[9] Washington DC VA Med Ctr, Dept Radiol, Washington, DC USA
[10] US FDA, Div Imaging Diagnost & Software Reliabil, Off Sci & Engn Labs, Ctr Devices & Radiol Hlth, Silver Spring, MD USA
[11] Univ Calgary, Dept Hepatol, Calgary, AB, Canada
[12] Univ Calgary, Dept Radiol, Calgary, AB, Canada
[13] Univ Rochester, Med Ctr, Dept Imaging Sci, Rochester, NY 14642 USA
[14] Univ Rochester, Med Ctr, Dept Oncol, Rochester, NY 14642 USA
[15] Univ Rochester, Med Ctr, Dept Biomed Engn, Rochester, NY 14642 USA
[16] Beth Israel Deaconess Med Ctr, Dept Radiol, Boston, MA 02215 USA