| Material property estimation for tubes and arteries using ultrasound radiation force and analysis of propagating modes. | |
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MedLine Citation:
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PMID: 21428498 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Arterial elasticity has been proposed as an independent predictor of cardiovascular diseases and mortality. Identification of the different propagating modes in thin shells can be used to characterize the elastic properties. Ultrasound radiation force was used to generate local mechanical waves in the wall of a urethane tube or an excised pig carotid artery. The waves were tracked using pulse-echo ultrasound. A modal analysis using two-dimensional discrete fast Fourier transform was performed on the time-space signal. This allowed the visualization of different modes of propagation and characterization of dispersion curves for both structures. The urethane tube/artery was mounted in a metallic frame, embedded in tissue-mimicking gelatin, cannulated, and pressurized over a range of 10-100 mmHg. The k-space and the dispersion curves of the urethane tube showed one mode of propagation, with no effect of transmural pressure. Fitting of a Lamb wave model estimated Young's modulus in the urethane tube around 560 kPa. Young's modulus of the artery ranged from 72 to 134 kPa at 10 and 100 mmHg, respectively. The changes observed in the artery dispersion curves suggest that this methodology of exciting mechanical waves and characterizing the modes of propagation has potential for studying arterial elasticity. |
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Authors:
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Miguel Bernal; Ivan Nenadic; Matthew W Urban; James F Greenleaf |
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Publication Detail:
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Type: Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 129 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-03-24 Completed Date: 2011-07-07 Revised Date: 2012-03-01 |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 1344-54 Citation Subset: IM |
Copyright Information:
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© 2011 Acoustical Society of America |
Affiliation:
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Physiology and Biomedical Engineering, Mayo Clinic College of Medicine, 200 First Street Southwest, Rochester, Minnesota 55905, USA. bernalrestrepo.miguel@mayo.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Animals Blood Pressure Carotid Arteries / ultrasonography* Compliance Elastic Modulus Elasticity Imaging Techniques / instrumentation, methods* Fourier Analysis Gelatin Image Interpretation, Computer-Assisted* Models, Cardiovascular Phantoms, Imaging Pulsatile Flow Swine Time Factors Urethane |
| Grant Support | |
ID/Acronym/Agency:
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EB02640/EB/NIBIB NIH HHS; R01 EB002640-13/EB/NIBIB NIH HHS |
| Chemical | |
Reg. No./Substance:
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51-79-6/Urethane; 9000-70-8/Gelatin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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