Estimation of flow velocity vectorial profile by ultrasound color Doppler mapping
Color Doppler mapping by ultrasound (UCDM) imaging systems provides qualitative description of flow velocity. When studying flow behavior, specifically ahead of a bifurcation, quantification is required, so as to allow description of the 3-dimensional vectorial components. The measurement of flow ve...
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| description | Color Doppler mapping by ultrasound (UCDM) imaging systems provides qualitative description of flow velocity. When studying flow behavior, specifically ahead of a bifurcation, quantification is required, so as to allow description of the 3-dimensional vectorial components. The measurement of flow velocity by UCDM, using a commercial imaging system, is convenient yet allows good estimation of the vectorial component only in the line of insonation. This report describes measurements of the flow velocity profile in a phantom of the carotid artery with its branching into the internal and external carotid arteries. The hypothesis was that using an accurate positioning system, the flow velocity profile can be estimated with a sensitivity high enough to measure all the flow components near the bifurcation. It was found that averaging of images was required. After averaging, insonation from two carefully measured orientations allowed calculation of axial and radial components of the flow velocity: the accuracy obtained was with a correlation better than 0.99, and SD of 0.37/spl deg/. The SD doubled when flow velocity was increased from Re=450 to Re=631. Thus, Quantification of 3D flow velocity measurement is possible, but requires modification of present systems. |
| doi_str_mv | 10.1109/IEMBS.1997.757781 |
| format | Conference Proceeding |
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When studying flow behavior, specifically ahead of a bifurcation, quantification is required, so as to allow description of the 3-dimensional vectorial components. The measurement of flow velocity by UCDM, using a commercial imaging system, is convenient yet allows good estimation of the vectorial component only in the line of insonation. This report describes measurements of the flow velocity profile in a phantom of the carotid artery with its branching into the internal and external carotid arteries. The hypothesis was that using an accurate positioning system, the flow velocity profile can be estimated with a sensitivity high enough to measure all the flow components near the bifurcation. It was found that averaging of images was required. After averaging, insonation from two carefully measured orientations allowed calculation of axial and radial components of the flow velocity: the accuracy obtained was with a correlation better than 0.99, and SD of 0.37/spl deg/. The SD doubled when flow velocity was increased from Re=450 to Re=631. Thus, Quantification of 3D flow velocity measurement is possible, but requires modification of present systems.</description><identifier>ISSN: 1094-687X</identifier><identifier>ISBN: 9780780342620</identifier><identifier>ISBN: 0780342623</identifier><identifier>EISSN: 1558-4615</identifier><identifier>DOI: 10.1109/IEMBS.1997.757781</identifier><language>eng</language><publisher>IEEE</publisher><subject>Bifurcation ; Biomedical measurements ; Carotid arteries ; Fluid flow measurement ; Imaging phantoms ; Micromanipulators ; Probes ; Ultrasonic imaging ; Ultrasonic variables measurement ; Velocity measurement</subject><ispartof>Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. 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After averaging, insonation from two carefully measured orientations allowed calculation of axial and radial components of the flow velocity: the accuracy obtained was with a correlation better than 0.99, and SD of 0.37/spl deg/. The SD doubled when flow velocity was increased from Re=450 to Re=631. Thus, Quantification of 3D flow velocity measurement is possible, but requires modification of present systems.</description><subject>Bifurcation</subject><subject>Biomedical measurements</subject><subject>Carotid arteries</subject><subject>Fluid flow measurement</subject><subject>Imaging phantoms</subject><subject>Micromanipulators</subject><subject>Probes</subject><subject>Ultrasonic imaging</subject><subject>Ultrasonic variables measurement</subject><subject>Velocity measurement</subject><issn>1094-687X</issn><issn>1558-4615</issn><isbn>9780780342620</isbn><isbn>0780342623</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>1997</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNp9jrFOwzAURa2WSpS2HwDT-4GE5zSO4xUIagcGBEO3yqRO5crNs2wXlL9vJJiRrnSudIZ7GbvnmHOO6nHbvD195FwpmUshZc0nbM6FqLOy4mLKVkrWOGZdFlWBN6NDVWZVLXe37C7GE2KBKPicvTcx2bNOlnqgDjpHP_BtHLU2DWNpEwWrHfhAnXUGvga4uBR0pEt_gJYcBXgh750JcNbe2_64ZLNOu2hWf1ywh9fm83mTWWPM3odxLQz739Prf-UVsGhDqQ</recordid><startdate>1997</startdate><enddate>1997</enddate><creator>Adam, D.R.</creator><creator>Givorry, D.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>1997</creationdate><title>Estimation of flow velocity vectorial profile by ultrasound color Doppler mapping</title><author>Adam, D.R. ; Givorry, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-ieee_primary_7577813</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>1997</creationdate><topic>Bifurcation</topic><topic>Biomedical measurements</topic><topic>Carotid arteries</topic><topic>Fluid flow measurement</topic><topic>Imaging phantoms</topic><topic>Micromanipulators</topic><topic>Probes</topic><topic>Ultrasonic imaging</topic><topic>Ultrasonic variables measurement</topic><topic>Velocity measurement</topic><toplevel>online_resources</toplevel><creatorcontrib>Adam, D.R.</creatorcontrib><creatorcontrib>Givorry, D.</creatorcontrib><collection>IEEE Electronic Library (IEL) Conference Proceedings</collection><collection>IEEE Proceedings Order Plan (POP) 1998-present by volume</collection><collection>IEEE Xplore All Conference Proceedings</collection><collection>IEEE Electronic Library (IEL)</collection><collection>IEEE Proceedings Order Plans (POP) 1998-present</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Adam, D.R.</au><au>Givorry, D.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Estimation of flow velocity vectorial profile by ultrasound color Doppler mapping</atitle><btitle>Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136)</btitle><stitle>IEMBS</stitle><date>1997</date><risdate>1997</risdate><volume>2</volume><spage>829</spage><epage>831 vol.2</epage><pages>829-831 vol.2</pages><issn>1094-687X</issn><eissn>1558-4615</eissn><isbn>9780780342620</isbn><isbn>0780342623</isbn><abstract>Color Doppler mapping by ultrasound (UCDM) imaging systems provides qualitative description of flow velocity. When studying flow behavior, specifically ahead of a bifurcation, quantification is required, so as to allow description of the 3-dimensional vectorial components. The measurement of flow velocity by UCDM, using a commercial imaging system, is convenient yet allows good estimation of the vectorial component only in the line of insonation. This report describes measurements of the flow velocity profile in a phantom of the carotid artery with its branching into the internal and external carotid arteries. The hypothesis was that using an accurate positioning system, the flow velocity profile can be estimated with a sensitivity high enough to measure all the flow components near the bifurcation. It was found that averaging of images was required. After averaging, insonation from two carefully measured orientations allowed calculation of axial and radial components of the flow velocity: the accuracy obtained was with a correlation better than 0.99, and SD of 0.37/spl deg/. The SD doubled when flow velocity was increased from Re=450 to Re=631. Thus, Quantification of 3D flow velocity measurement is possible, but requires modification of present systems.</abstract><pub>IEEE</pub><doi>10.1109/IEMBS.1997.757781</doi></addata></record> |
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| ispartof | Proceedings of the 19th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. 'Magnificent Milestones and Emerging Opportunities in Medical Engineering' (Cat. No.97CH36136), 1997, Vol.2, p.829-831 vol.2 |
| issn | 1094-687X 1558-4615 |
| language | eng |
| recordid | cdi_ieee_primary_757781 |
| source | IEEE Electronic Library (IEL) Conference Proceedings |
| subjects | Bifurcation Biomedical measurements Carotid arteries Fluid flow measurement Imaging phantoms Micromanipulators Probes Ultrasonic imaging Ultrasonic variables measurement Velocity measurement |
| title | Estimation of flow velocity vectorial profile by ultrasound color Doppler mapping |
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