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International Journal of Biomedical Imaging
Volume 2015, Article ID 454028, 8 pages
Research Article

Imaging Performance of Quantitative Transmission Ultrasound

1QT Ultrasound, LLC, Novato, CA 94949, USA
2Department of Radiology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA

Received 13 August 2015; Accepted 8 October 2015

Academic Editor: Jyh-Cheng Chen

Copyright © 2015 Mark W. Lenox et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Quantitative Transmission Ultrasound (QTUS) is a tomographic transmission ultrasound modality that is capable of generating 3D speed-of-sound maps of objects in the field of view. It performs this measurement by propagating a plane wave through the medium from a transmitter on one side of a water tank to a high resolution receiver on the opposite side. This information is then used via inverse scattering to compute a speed map. In addition, the presence of reflection transducers allows the creation of a high resolution, spatially compounded reflection map that is natively coregistered to the speed map. A prototype QTUS system was evaluated for measurement and geometric accuracy as well as for the ability to correctly determine speed of sound.