Abstract
To measure blood flow velocity in vessels with
conventional ultrasound, the velocity is estimated along the
direction of the emitted ultrasound wave. It is therefore
impossible to obtain accurate information on blood flow
velocity and direction, when the angle between blood flow and
ultrasound wave approaches 90°. The majority of the vessels
in the human body is parallel to the surface and therefore
positioned in a way that prevents proper placement and
angulation of the transducer, when the velocity and direction
of blood flow is to be estimated. Different techniques to
circumvent this problem have been tried including Transverse
Oscillation. This method has been tested in computer
simulations, on flow phantoms and in-vivo, and subsequently
validated against MRI angiography. Transverse Oscillation is
now implemented in a commercial ultrasound scanner from
BK Medical (UltraView). In this article UltraView is
demonstrated on the carotid artery, jugular vein and femoral
vein that all runs almost parallel to the skin and thus is angled
near 90° to the ultrasound waves. Arterial and venous simple
and complex flow with formation of vortices is demonstrated
by scanning on the longitudinal axis with a 90° angle on the
vessel. Moreover secondary flow in the abdominal aorta is
illustrated by scanning on the transversal axis.
Original language | English |
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Title of host publication | IFMBE Proceedings |
Editors | K Dremstrup, S Rees, M. Ø Jensen |
Volume | 34 |
Publisher | Springer |
Publication date | 2011 |
Pages | 77-80 |
Publication status | Published - 2011 |
Event | 15th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics - Aalborg, Denmark Duration: 14 Jun 2011 → 17 Jun 2011 Conference number: 15 http://www.dmts.dk/nbc15/ |
Conference
Conference | 15th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics |
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Number | 15 |
Country/Territory | Denmark |
City | Aalborg |
Period | 14/06/2011 → 17/06/2011 |
Internet address |
Keywords
- Blood flow
- Transverse oscillation
- Velocity estimation
- Vector velocity