Title :
RSNA/QIBA: Shear wave speed as a biomarker for liver fibrosis staging
Author :
Hall, Trevor J. ; Milkowski, Andy ; Garra, Brian ; Carson, Paul ; Palmeri, Mark ; Nightingale, Kathryn ; Lynch, Ted ; Alturki, Abdullah ; Andre, M. ; Audiere, Stephane ; Bamber, Jeffrey ; Barr, R. ; Bercoff, Jeremy ; Bercoff, Jeremy ; Bernal, Miguel ; Bru
Author_Institution :
Med. Phys. Dept., Univ. of Wisconsin, Madison, WI, USA
Abstract :
An interlaboratory study of shear wave speed (SWS) estimation was performed. Commercial shear wave elastography systems from Fibroscan, Philips, Siemens and Supersonic Imagine, as well as several custom laboratory systems, were involved. Fifteen sites were included in the study. CIRS manufactured and donated 11 pairs of custom phantoms designed for the purposes of this investigation. Dynamic mechanical tests of equivalent phantom materials were also performed. The results of this study demonstrate that there is very good agreement among SWS estimation systems, but there are several sources of bias and variance that can be addressed to improve consistency of measurement results.
Keywords :
biomechanics; biomedical ultrasonics; diseases; dynamic testing; elastic waves; liver; phantoms; ultrasonic imaging; Fibroscan; Philips; RSNA-QIBA; Siemens; Supersonic Imagine; biomarker; commercial shear wave elastography systems; custom phantoms; dynamic mechanical testing; equivalent phantom materials; liver fibrosis staging; shear wave speed estimation; Current measurement; Educational institutions; Liver; Materials; Phantoms; Ultrasonic imaging;
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
Print_ISBN :
978-1-4673-5684-8
DOI :
10.1109/ULTSYM.2013.0103
