Algorithms for estimating blood velocities using ultrasound

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Ultrasound has been used intensively for the last 15 years for studying the hemodynamics of the human body. Systems for determining both the velocity distribution at one point of interest (spectral systems) and for displaying a map of velocity in real time have been constructed. A number of schemes have been developed for performing the estimation, and the various approaches are described. The current systems only display the velocity along the ultrasound beam direction and a velocity transverse to the beam is not detected. This is a major problem in these systems, since most blood vessels are parallel to the skin surface. Angling the transducer will often disturb the flow, and new techniques for finding transverse velocities are needed. The various approaches for determining transverse velocities will be explained. This includes techniques using two-dimensional correlation (speckle tracking), multiple beams, and the new transverse modulation technique. The di V erent advantages and disadvantages of the approaches are explained.
Original languageEnglish
Issue number1-8
Pages (from-to)358-362
Publication statusPublished - 2000
Event1st Joint Meeting Ultrasonics International 99 and 1999 World Congress on Ultrasonics (UI 99/WCU 99) - Technical University of Denmark, Lyngby, Denmark
Duration: 29 Jun 19991 Jul 1999
Conference number: 1


Conference1st Joint Meeting Ultrasonics International 99 and 1999 World Congress on Ultrasonics (UI 99/WCU 99)
LocationTechnical University of Denmark


  • Medical
  • Transverse estimators
  • Velocity estimation


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