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 System Images Tissue with Unprecedented Detail and Precision

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Date posted: 10/04/2005

Researchers at the University of Southern California's Viterbi School of Engineering have successfully demonstrated a novel ?High-resolution Ultrasonic Transmission Tomography? (HUTT) system fthat offers 3D images of soft tissue that are superior to those produced by existing commercial X-ray, ultrasound or MRI units.

HUTT offers a full order of magnitude increase in creating 3D renditions of soft tissues it scans over anything previously deployed.

"The HUTT imaging system is a novel and potentially very useful approach to diagnostic ultrasound,? said Dr. Phillip W. Ralls, a professor and vice chair in the USC Keck School of Medicine department of radiology. ?The potential clinical benefits of the superb images obtained by this completely safe, non-invasive technique are very exciting."

According to Vasilis Marmarelis, a professor of biomedical engineering at the Viterbi School, the key features distinguishing HUTT from all previous ultrasound imaging systems is the use of multi-band analysis with sub-millimeter ultrasonic transducers in transmission mode, rather than the commonly used echo mode, to create the 3-D image.

He explains that in traditional hand-held ultrasound systems, sound waves are broadcast into the tissue, and the echoes produce an image of the reflecting interfaces ? that is, the sound transmitter and the receiver are both on the same side of the sample.

However, only a tiny fraction of the transmitted sound comes back as echo on soft tissues, while a much larger fraction (about 2000 times bigger) is transmitted through the soft tissue.

Using the sound transmitted through tissue allows the formation of better images with greater clarity and resolution.

See the full Story via external site: viterbi.usc.edu



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