Abstract
Multi-channel photo-acoustic and laser ultrasonic waves are used to sense the characteristics
of proxies for healthy and diseased vessels. The acquisition system is non-contacting
and non-invasive with a pulsed laser source and a laser vibrometer detector. As the
wave signatures of our targets are typically low in amplitude, we exploit multi-channel
acquisition and processing techniques. These are commonly used in seismology to improve
the signal-to-noise ratio of data. We identify vessel proxies with a diameter on the
order of 1 mm, at a depth of 18 mm. Variations in scattered and photo-acoustic signatures
are related to differences in vessel wall properties and content. The methods described
have the potential to improve imaging and better inform interventions for atherosclerotic
vessels, such as the carotid artery.
Key Words
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Article info
Publication history
Published online: January 13, 2014
Accepted:
October 8,
2013
Received in revised form:
September 7,
2013
Received:
May 24,
2013
Identification
Copyright
© 2014 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
