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Authors:
Andrzej Nowicki
Marcin Lewandowski
Ihor Trots
Robert Olszewski
Keywords: thick film transducers, atherosclerosis, flow mediated vasodilation.
Abstract:
Preceding atherosclerosis is an endothelial dysfunction. Therefore there is a growing interest in the application of non-invasive clinical tools to assess endothelial function. Commercially available ultrasound machines can measure flow-mediated vasodilatation of the brachial artery using maximum 10-12 MHz linear probes. The higher the probe frequency, the better the axial resolution. Recently, a new technology of piezoelectric transducers based on PZT thick film technology has been developed in Meggitt (Denmark) as a response to a call for devices working at higher frequencies. The thick films exhibited at least 30% bandwidth broadening comparing to the standard PZ 27 transducers, resulting in an increase in match filtering encoding output by a factor of 1.4-1.5 and finally resulting in a signal to noise gain of the same order. The introduction of a high frequency 25-30 MHz ultrasound scanner to measure radial artery diameter after reactive hyperemia opens a new window for more precise imaging of endothelial function.
Pages: 99 to 100
Copyright: Copyright (c) IARIA, 2015
Publication date: August 23, 2015
Published in: conference
ISSN: 2308-3514
ISBN: 978-1-61208-426-8
Location: Venice, Italy
Dates: from August 23, 2015 to August 28, 2015