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Title
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Digital image correlation for full-field time-resolved assessment of arterial stiffness
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Author
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Abstract
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| Pulse wave velocity (PWV) of the arterial system is a very important parameter to evaluate cardiovascular health. Currently, however, there is no golden standard for PWV measurement. Digital image correlation (DIC) was used for full-field time-resolved assessment of displacement, velocity, acceleration, and strains of the skin in the neck directly above the common carotid artery. By assessing these parameters, propagation of the pulse wave could be tracked, leading to a new method for PWV detection based on DIC. The method was tested on five healthy subjects. As a means of validation, PWV was measured with ultrasound (US) as well. Measured PWV values were between 3.68 and 5.19 m/s as measured with DIC and between 5.14 and 6.58 m/s as measured with US, with a maximum absolute difference of 2.78 m/s between the two methods. DIC measurements of the neck region can serve as a test base for determining a robust strategy for PWV detection, they can serve as reference for three-dimensional fluidstructure interaction models, or they may even evolve into a screening method of their own. Moreover, full-field, time-resolved DIC can be adapted for other applications in biomechanics. |
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Language
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English
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Source (journal)
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Journal of biomedical optics / SPIE: International Society for Optical Engineering; International Biomedical Optics Society. - Bellingham, Wash.
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Publication
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Bellingham, Wash.
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SPIE - The International Society for Optical Engineering
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2014
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ISSN
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1083-3668
1560-2281
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DOI
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10.1117/1.JBO.19.1.016008
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Volume/pages
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19
:1
(2014)
, p. 1-19
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Article Reference
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016008
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ISI
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000331892700040
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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