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Evaluation of an ul...
Evaluation of an ultrasonic echo-tracking method for measurements of arterial wall movements in two dimensions
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- Cinthio, M. (författare)
- Department of Electrical Measurements, Lund University, 221 00 Lund, Sweden
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- Ahlgren, A.R. (författare)
- Department of Clinical Physiology, Lund University, Malmö University Hospital, 205 02 Malmö, Sweden, Department of Clinical Physiology, Lund University, Malmö University Hospital, Sweden
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- Jansson, Tomas (författare)
- Department of Electrical Measurements, Lund University
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- Eriksson, A. (författare)
- Department of Electrical Measurements, Lund University, 221 00 Lund, Sweden, Naval Underwater Technology, Kockums, Alta.
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- Persson, H.W. (författare)
- Department of Electrical Measurements, Lund University, 221 00 Lund, Sweden, Lund Institute of Technology, Department of Electrical
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- Lindstrom, K. (författare)
- Department of Electrical Measurements, Lund University, 221 00 Lund, Sweden, Lund Institute of Technology, Lund University, Department of Radiology and Physiology, Malmö University Hospital
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(creator_code:org_t)
- 2005
- 2005
- Engelska.
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Ingår i: IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control. - 0885-3010 .- 1525-8955. ; 52:8, s. 1300-1311
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- The longitudinal movement of blood vessel walls has so far gained little or no attention, as it has been presumed that these movements are of a negligible magnitude. However, modern high-resolution ultrasound scanners can demonstrate that the inner layers of the arterial wall exhibit considerable movements in the longitudinal direction. This paper evaluates a new, noninvasive, echo-tracking technique, which simultaneously can track both the radial and the longitudinal movements of the arterial wall with high resolution in vivo. Initially, the method is evaluated in vitro using a specially designed ultrasound phantom, which is attached to and moved by an X-Y system, the movement of which was compared with two high-resolution triangulation lasers. The results show an inaccuracy of 2.5% full scale deflection (fsd), reproducibility of 12 µm and a resolution of 5 µm, which should be more than sufficient for in vivo studies. The ability of the method is also demonstrated in a limited in vivo study in which a preselected part of the inner vessel wall of the right common carotid artery of a healthy volunteer is tracked in two dimensions over many cardiac cycles. The results show well reproducible x-y movement loops in which the recorded radial and longitudinal movements both are of the magnitude millimetre. © 2005 IEEE.
Nyckelord
- TECHNOLOGY
- TEKNIKVETENSKAP
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- ref (ämneskategori)
- art (ämneskategori)
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