Subscribe to our free daily newsletters
  Space Industry and Business News  




Subscribe to our free daily newsletters



Researchers Develop Tool For Clearer Ultrasound Images

About Interactive Supercomputing Interactive Supercomputing (ISC) launched in 2004 to commercialize Star-P, an interactive parallel computing platform. With automatic parallelization and interactive execution of existing desktop technical applications, Star-P merges two previously distinct environments - desktop computers and high performance servers - into one. Based in Waltham, Mass., the privately held company markets Star-P for a range of biomedical, financial, and government laboratory research applications. Additional information is available at www.interactivesupercomputing.com.
by Staff Writers
Charlottesville, VA (SPX) Jul 18, 2007
University of Virginia Engineering School Associate Professor William F. Walker and Research Associate Francesco Viola have developed a new tool - an advanced imaging algorithm - that is, quite literally, transforming the way we see things. Together with graduate student Michael A. Ellis, biomedical engineering team has created an innovative method of signal processing that can be used with a broad range of imaging and sensing systems including ultrasound, RADAR, SONAR, telecommunications, and even a few optical imaging systems.

Called the Time-domain Optimized Near-field Estimator (TONE), this novel algorithm enhances the effectiveness of medical ultrasound imaging, providing medical professionals with dramatically improved image resolution and contrast.

In an ultrasound scanner, computer algorithms use reflected sound waves to create real-time images of the organ or tissue being examined. The images, however, aren't always clear.

"For almost four decades, beamforming algorithms have been refined for RADAR and SONAR," said Walker. "While these algorithms are tremendously powerful, they don't generally translate well to medical ultrasound imaging."

When screening for breast cancer or diagnosing other life threatening conditions using ultrasound technology, it is imperative that images are well-defined. Even so, clinical imaging specialists know that many patients simply "image poorly," that is, images of their organs and tissues remain unclear.

"Off-axis signals - reflections coming from undesired locations - degrade images produced by current ultrasound systems" said Viola. "TONE reduces the contribution of these unwanted signals, thereby forming images with greatly increased contrast and resolution"

The team performed a series of simulations using sample ultrasound data to test the performance of this algorithm and compared it to conventional beamforming strategies (CBF) used by current ultrasound scanners. Imaging trials were conducted using wires (see attached illustration) suspended in water, a typical set up to test image resolution and contrast in medical ultrasound. The results show a significant improvement in spatial resolution over CBF.

The experiments were performed with technical support from Philips Medical Systems, a long-time collaborator of the U.Va. team.

The research team also enlisted the support of Interactive SuperComputing - and the company's product, Star-P, an interactive parallel computing platform - to tackle the computational complexity of the experiments.

According to Walker, the next step will involve using the TONE algorithm to image actual human tissue - the very place where this methodology could have the greatest impact.

"The potential applications for this algorithm are almost infinite," said James H. Aylor, dean of U.Va.'s School of Engineering and Applied Science. "Not only can it be used in the medical community to benefit patients nationwide, but it will also have applications in the fields of radio astronomy, seismology and more."

The research - funded by a grant from the U.S. Army Congressionally Directed Medical Research Program in Breast Cancer - is currently patent pending and will be published in a forthcoming issue of IEEE Transactions on Medical Imaging.

Related Links
University of Virginia
Virginia School of Engineering and Applied Science
Space Technology News - Applications and Research



Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News


NASA Harnesses Power Of Virtual Worlds For Exploration And Outreach
Washington (USINFO) Jul 10, 2007
NASA has created two islands in the popular real-time virtual world called Second Life, where anyone interested in space travel or technology can explore, discover and contribute to the space agency's mission. One island, called CoLab, for the Collaborative Space Exploration Laboratory, was established in 2006 by the NASA Ames Research Center in California's Silicon Valley as a virtual learning community with interactive content.







  • Vizada Launches SkyFile Access For Better Mobile Satellite Data Transfer
  • Bringing Mobile Cellular Phones To The Skyways
  • Rockwell Collins And ARINC Sign Agreement For Broadband Offering
  • Academic Group Releases Plan To Share Power Over Internet Root Zone Keys

  • Spaceway 3 Is Delivered To The Spaceport For Its Mid-August Ariane 5 Launch
  • Russian Space Firm Signs 14 Deals For Commercial Rocket Launches
  • Sea Launch To Resume Zenit Launches In October
  • Russia Proton-M Booster Puts US Satellite Into Orbit

  • Goodrich Contributes Technology For Environmentally-Friendly Engine Research Program
  • Sukhoi Super Jet: The Great White Hope Of The Russian Aircraft Industry
  • Sarkozy, Merkel To Tackle Airbus Problems
  • Boeing Awarded Two Billion Dollar A-10 Wing Contract

  • A-10s Get Digital Makeover
  • TSAT Team Demonstrates Technology Maturity Of Laser Communications Subsystem
  • Boeing Showcases Operational TSAT System During Critical Review
  • Lockheed Martin Shifts Into Production Phase Of Navy Narrowband Tactical Satellite

  • BAE Systems To Produce Field Programmable Gate Array For Space Use
  • Researchers Develop Tool For Clearer Ultrasound Images
  • Speeding Up CT Scans By Using Telecommunications Tricks
  • Ball Aerospace Deep Impact Spacecraft Chosen For NASA EPOXI Mission

  • Hall Appoints Feeney To Top GOP Position On Space And Aeronautics Subcommittee
  • Dodgen Joins Northrop Grumman As Vice President Of Strategy For Missile Systems Business
  • Townsend To Lead Ball Aerospace Exploration Systems In Huntsville
  • NASA Nobel Prize Recipient To Lead Chief Scientist Office

  • NASA Awards Contract For Land-Imaging Instrument
  • GOP House Science Committee To Evaluate NASA Earth Science Budget
  • Subcommittee Continues Look At Status of NASA Earth Science Programs
  • QuikSCAT Marks Eight Years On-Orbit Watching Planet Earth

  • Boeing To Submit Proposal For Global Positioning System 3
  • Pseudo-Satellites Allow Accurate Navigation In Helsinki Harbour
  • Cooperation Agreement For Satellite Navigation In Africa
  • ESA Launches New Program For Air Traffic Management Via Satellite

  • The content herein, unless otherwise known to be public domain, are Copyright Space.TV Corporation. AFP and UPI Wire Stories are copyright Agence France-Presse and United Press International. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space.TV Corp on any Web page published or hosted by Space.TV Corp. Privacy Statement