Speckle decorrelation due to two-dimensional flow gradients
The performance of ultrasonic velocity estimation methods is degraded by speckle decorrelation, the change in received echoes over time. Because ultrasonic speckle is formed by the complex sum of echoes from subresolution scatterers, it is sensitive to the relative motion of those scatterers. Veloci...
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| Veröffentlicht in: | IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 1998-03, Vol.45 (2), p.317-327 |
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| container_end_page | 327 |
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| container_title | IEEE transactions on ultrasonics, ferroelectrics, and frequency control |
| container_volume | 45 |
| creator | Friemel, B.H. Bohs, L.N. Nightingale, K.R. Trahey, G.E. |
| description | The performance of ultrasonic velocity estimation methods is degraded by speckle decorrelation, the change in received echoes over time. Because ultrasonic speckle is formed by the complex sum of echoes from subresolution scatterers, it is sensitive to the relative motion of those scatterers. Velocity gradients in flowing blood result in relative scatterer motion and can be a significant source of speckle decorrelation. Computer simulations were performed to evaluate speckle decorrelation due to two-dimensional flow gradients. Results indicate that decorrelation due to flow gradients is sensitive to the angle of flow and has a maximum at a beam-vessel angle of 0/spl deg/, i.e., purely axial flow. A quantitative summary of the major factors causing speckle decorrelation indicates that flow gradients are the most significant contributors under the conditions modeled. |
| doi_str_mv | 10.1109/58.660142 |
| format | Article |
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Because ultrasonic speckle is formed by the complex sum of echoes from subresolution scatterers, it is sensitive to the relative motion of those scatterers. Velocity gradients in flowing blood result in relative scatterer motion and can be a significant source of speckle decorrelation. Computer simulations were performed to evaluate speckle decorrelation due to two-dimensional flow gradients. Results indicate that decorrelation due to flow gradients is sensitive to the angle of flow and has a maximum at a beam-vessel angle of 0/spl deg/, i.e., purely axial flow. A quantitative summary of the major factors causing speckle decorrelation indicates that flow gradients are the most significant contributors under the conditions modeled.</description><identifier>ISSN: 0885-3010</identifier><identifier>EISSN: 1525-8955</identifier><identifier>DOI: 10.1109/58.660142</identifier><identifier>PMID: 18244183</identifier><identifier>CODEN: ITUCER</identifier><language>eng</language><publisher>New York, NY: IEEE</publisher><subject>Acoustical measurements and instrumentation ; Acoustics ; Biological and medical sciences ; Biomedical measurements ; Blood ; Cardiovascular system ; Computer simulation ; Decorrelation ; Degradation ; Exact sciences and technology ; Fluid flow measurement ; Fundamental areas of phenomenology (including applications) ; Investigative techniques, diagnostic techniques (general aspects) ; Medical sciences ; Performance evaluation ; Physics ; Scattering ; Speckle ; Ultrasonic investigative techniques ; Velocity measurement</subject><ispartof>IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 1998-03, Vol.45 (2), p.317-327</ispartof><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c361t-4a66a0eb79331481137926abe3f65a55af006c759b756113a59396040b996f6d3</citedby><cites>FETCH-LOGICAL-c361t-4a66a0eb79331481137926abe3f65a55af006c759b756113a59396040b996f6d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/660142$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,780,784,796,27924,27925,54758</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/660142$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2186984$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/18244183$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Friemel, B.H.</creatorcontrib><creatorcontrib>Bohs, L.N.</creatorcontrib><creatorcontrib>Nightingale, K.R.</creatorcontrib><creatorcontrib>Trahey, G.E.</creatorcontrib><title>Speckle decorrelation due to two-dimensional flow gradients</title><title>IEEE transactions on ultrasonics, ferroelectrics, and frequency control</title><addtitle>T-UFFC</addtitle><addtitle>IEEE Trans Ultrason Ferroelectr Freq Control</addtitle><description>The performance of ultrasonic velocity estimation methods is degraded by speckle decorrelation, the change in received echoes over time. Because ultrasonic speckle is formed by the complex sum of echoes from subresolution scatterers, it is sensitive to the relative motion of those scatterers. Velocity gradients in flowing blood result in relative scatterer motion and can be a significant source of speckle decorrelation. Computer simulations were performed to evaluate speckle decorrelation due to two-dimensional flow gradients. Results indicate that decorrelation due to flow gradients is sensitive to the angle of flow and has a maximum at a beam-vessel angle of 0/spl deg/, i.e., purely axial flow. A quantitative summary of the major factors causing speckle decorrelation indicates that flow gradients are the most significant contributors under the conditions modeled.</description><subject>Acoustical measurements and instrumentation</subject><subject>Acoustics</subject><subject>Biological and medical sciences</subject><subject>Biomedical measurements</subject><subject>Blood</subject><subject>Cardiovascular system</subject><subject>Computer simulation</subject><subject>Decorrelation</subject><subject>Degradation</subject><subject>Exact sciences and technology</subject><subject>Fluid flow measurement</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Investigative techniques, diagnostic techniques (general aspects)</subject><subject>Medical sciences</subject><subject>Performance evaluation</subject><subject>Physics</subject><subject>Scattering</subject><subject>Speckle</subject><subject>Ultrasonic investigative techniques</subject><subject>Velocity measurement</subject><issn>0885-3010</issn><issn>1525-8955</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNp90D1LxEAQBuBFFO88LWwtJIUoFjn3O7tYyeEXHFioddhsJhLdy567CYf_3mjC2VkNzDy8Ay9CxwTPCcH6Sqi5lJhwuoOmRFCRKi3ELppipUTKMMETdBDjO-4J13QfTYiinBPFpuj6eQ32w0FSgvUhgDNt7Zuk7CBpfdJufFrWK2hivzQuqZzfJG_BlDU0bTxEe5VxEY7GOUOvd7cvi4d0-XT_uLhZppZJ0qbcSGkwFJlmjHBFCMs0laYAVklhhDAVxtJmQheZkP3VCM20xBwXWstKlmyGLobcdfCfHcQ2X9XRgnOmAd_FPGOcCsyI7uX5v5IqyThWvIeXA7TBxxigytehXpnwlROc_3SaC5UPnfb2dAztihWUf3IssQdnIzDRGlcF09g6bh0lSurfnycDqwFgex2ffAOvjIOe</recordid><startdate>19980301</startdate><enddate>19980301</enddate><creator>Friemel, B.H.</creator><creator>Bohs, L.N.</creator><creator>Nightingale, K.R.</creator><creator>Trahey, G.E.</creator><general>IEEE</general><general>Institute of Electrical and Electronics Engineers</general><scope>RIA</scope><scope>RIE</scope><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>L7M</scope><scope>7X8</scope></search><sort><creationdate>19980301</creationdate><title>Speckle decorrelation due to two-dimensional flow gradients</title><author>Friemel, B.H. ; Bohs, L.N. ; Nightingale, K.R. ; Trahey, G.E.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c361t-4a66a0eb79331481137926abe3f65a55af006c759b756113a59396040b996f6d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Acoustical measurements and instrumentation</topic><topic>Acoustics</topic><topic>Biological and medical sciences</topic><topic>Biomedical measurements</topic><topic>Blood</topic><topic>Cardiovascular system</topic><topic>Computer simulation</topic><topic>Decorrelation</topic><topic>Degradation</topic><topic>Exact sciences and technology</topic><topic>Fluid flow measurement</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Investigative techniques, diagnostic techniques (general aspects)</topic><topic>Medical sciences</topic><topic>Performance evaluation</topic><topic>Physics</topic><topic>Scattering</topic><topic>Speckle</topic><topic>Ultrasonic investigative techniques</topic><topic>Velocity measurement</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Friemel, B.H.</creatorcontrib><creatorcontrib>Bohs, L.N.</creatorcontrib><creatorcontrib>Nightingale, K.R.</creatorcontrib><creatorcontrib>Trahey, G.E.</creatorcontrib><collection>IEEE All-Society Periodicals Package (ASPP) 1998-Present</collection><collection>IEEE Electronic Library (IEL)</collection><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>IEEE transactions on ultrasonics, ferroelectrics, and frequency control</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Friemel, B.H.</au><au>Bohs, L.N.</au><au>Nightingale, K.R.</au><au>Trahey, G.E.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Speckle decorrelation due to two-dimensional flow gradients</atitle><jtitle>IEEE transactions on ultrasonics, ferroelectrics, and frequency control</jtitle><stitle>T-UFFC</stitle><addtitle>IEEE Trans Ultrason Ferroelectr Freq Control</addtitle><date>1998-03-01</date><risdate>1998</risdate><volume>45</volume><issue>2</issue><spage>317</spage><epage>327</epage><pages>317-327</pages><issn>0885-3010</issn><eissn>1525-8955</eissn><coden>ITUCER</coden><abstract>The performance of ultrasonic velocity estimation methods is degraded by speckle decorrelation, the change in received echoes over time. Because ultrasonic speckle is formed by the complex sum of echoes from subresolution scatterers, it is sensitive to the relative motion of those scatterers. Velocity gradients in flowing blood result in relative scatterer motion and can be a significant source of speckle decorrelation. Computer simulations were performed to evaluate speckle decorrelation due to two-dimensional flow gradients. Results indicate that decorrelation due to flow gradients is sensitive to the angle of flow and has a maximum at a beam-vessel angle of 0/spl deg/, i.e., purely axial flow. A quantitative summary of the major factors causing speckle decorrelation indicates that flow gradients are the most significant contributors under the conditions modeled.</abstract><cop>New York, NY</cop><pub>IEEE</pub><pmid>18244183</pmid><doi>10.1109/58.660142</doi><tpages>11</tpages></addata></record> |
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| language | eng |
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| source | IEEE Electronic Library (IEL) |
| subjects | Acoustical measurements and instrumentation Acoustics Biological and medical sciences Biomedical measurements Blood Cardiovascular system Computer simulation Decorrelation Degradation Exact sciences and technology Fluid flow measurement Fundamental areas of phenomenology (including applications) Investigative techniques, diagnostic techniques (general aspects) Medical sciences Performance evaluation Physics Scattering Speckle Ultrasonic investigative techniques Velocity measurement |
| title | Speckle decorrelation due to two-dimensional flow gradients |
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