Abstract
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 language | English |
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Journal | Ultrasonics |
Volume | 38 |
Issue number | 1-8 |
Pages (from-to) | 358-362 |
ISSN | 0041-624X |
DOIs | |
Publication status | Published - 2000 |
Event | 1st Joint Meeting Ultrasonics International 99 and 1999 World Congress on Ultrasonics (UI 99/WCU 99) - Technical University of Denmark, Lyngby, Denmark Duration: 29 Jun 1999 → 1 Jul 1999 Conference number: 1 |
Conference
Conference | 1st Joint Meeting Ultrasonics International 99 and 1999 World Congress on Ultrasonics (UI 99/WCU 99) |
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Number | 1 |
Location | Technical University of Denmark |
Country/Territory | Denmark |
City | Lyngby |
Period | 29/06/1999 → 01/07/1999 |
Keywords
- Medical
- Transverse estimators
- Velocity estimation