Arterial secondary blood flow patterns visualized with vector flow ultrasound

Mads Møller Pedersen, Michael Johannes Pihl, Jens Munk Hansen, Peter Møller Hansen, Per Haugaard, Michael Bachmann Nielsen, Jørgen Arendt Jensen

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Abstract

This study presents the first quantification and visualisation of secondary flow patterns with vector flow ultrasound. The first commercial implementation of the vector flow method Transverse Oscillation was used to obtain in-vivo, 2D vector fields in real-time. The hypothesis of this study was that the rotational direction is constant within each artery. Three data sets of 10 seconds were obtained from three main arteries in healthy volunteers. For each data set the rotational flow patterns were identified during the diastole. Each data set contains a 2D vector field over time and with the vector angles and velocity magnitudes the blood flow patterns were visualised with streamlines in Matlab (Mathworks, Natick, MA, USA). The rotational flow was quantified by the angular frequency for each cardiac cycle, and the mean rotational frequencies and standard deviations were calculated for the abdominal aorta f-1.30.4;-1.00.3;-0.90.2gHz, the common iliac artery f-0.40.1;-1.00.2;-0.40.1gHz, and the common carotid artery f0.80.3;1.40.3;0.40.1gHz. A positive sign indicates an anti-clockwise rotation, and a negative sign indicates clockwise rotation. The sign of the rotational directions within each artery were constant.
Original languageEnglish
Title of host publicationProceedings of the 2011 IEEE International Ultrasonics Symposium
Number of pages4
PublisherIEEE
Publication date2011
Pages1242-1245
ISBN (Print)978-1-4577-1251-7
DOIs
Publication statusPublished - 2011
Event2011 IEEE International Ultrasonics Symposium - Caribe Royale, Orlando, FL, United States
Duration: 18 Oct 201121 Oct 2011
http://ewh.ieee.org/conf/ius_2011/

Conference

Conference2011 IEEE International Ultrasonics Symposium
LocationCaribe Royale
CountryUnited States
CityOrlando, FL
Period18/10/201121/10/2011
Internet address

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