| Transverse flow imaging based on photoacoustic Doppler bandwidth broadening. | |
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MedLine Citation:
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PMID: 20459226 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We propose a new method to measure transverse flow velocity based on photoacoustic Doppler bandwidth broadening, which is determined by the geometry of the probe-beam and the velocity of the transverse flow. By exploiting pulsed laser excitation and raster motor scanning, three-dimensional structure and flow velocity can be imaged simultaneously. In addition, the flow direction can be determined with bidirectional scanning. In a flowing suspension of red-dyed microspheres (diameter: 6 microm), transverse flow speeds ranging from 0 to 2.5 mms as well as flow direction were measured. A cross-sectional flow image was also obtained with the tube laid in a zigzag pattern. |
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Authors:
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Junjie Yao; Lihong V Wang |
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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: Journal of biomedical optics Volume: 15 ISSN: 1560-2281 ISO Abbreviation: J Biomed Opt Publication Date: 2010 Mar-Apr |
Date Detail:
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Created Date: 2010-05-12 Completed Date: 2010-09-13 Revised Date: 2011-07-26 |
Medline Journal Info:
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Nlm Unique ID: 9605853 Medline TA: J Biomed Opt Country: United States |
Other Details:
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Languages: eng Pagination: 021304 Citation Subset: IM |
Affiliation:
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Washington University in St. Louis, Department of Biomedical Engineering, Optical Imaging Laboratory, Campus Box 1097, One Brookings Drive, St. Louis, Missouri 63130, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity
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physiology* Computer-Aided Design Elasticity Imaging Techniques / instrumentation* Equipment Design Equipment Failure Analysis Laser-Doppler Flowmetry / instrumentation* Reproducibility of Results Sensitivity and Specificity |
| Grant Support | |
ID/Acronym/Agency:
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R01 EB000712/EB/NIBIB NIH HHS; R01 EB008085/EB/NIBIB NIH HHS; R01 NS46214/NS/NINDS NIH HHS; U54 CA136398/CA/NCI NIH HHS |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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