. Author manuscript; available in PMC: 2014 May 1.
Published in final edited form as: Ultrasound Med Biol. 2013 Mar 1;39(5):813–824. doi: 10.1016/j.ultrasmedbio.2012.12.008
© 2012 World Federation for Ultrasound in Medicine and Biology. Published by Elsevier Inc. All rights reserved.