Estimation of displacement vectors and strain tensors in elastography using angular insonifications
We describe a new method for estimating all the components of the tissue displacement vector following a quasi-static compression. The method uses displacements estimated from radiofrequency echo-signals along multiple ultrasound beam insonification directions. At each spatial location in the compre...
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| creator | Techavipoo, U. Quan Chen Varghese, T. Zagzebski, J.A. |
| description | We describe a new method for estimating all the components of the tissue displacement vector following a quasi-static compression. The method uses displacements estimated from radiofrequency echo-signals along multiple ultrasound beam insonification directions. At each spatial location in the compressed medium, orthogonal tissue displacements in both the axial and lateral directions with respect to the direction of the applied compression are estimated using least squares solutions. The components of the corresponding normal and shear strain tensors are then estimated. Simulation and experimental results demonstrate the utility of this technique for the computation of the normal and shear strain tensors. |
| doi_str_mv | 10.1109/ULTSYM.2004.1417663 |
| format | Conference Proceeding |
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The method uses displacements estimated from radiofrequency echo-signals along multiple ultrasound beam insonification directions. At each spatial location in the compressed medium, orthogonal tissue displacements in both the axial and lateral directions with respect to the direction of the applied compression are estimated using least squares solutions. The components of the corresponding normal and shear strain tensors are then estimated. Simulation and experimental results demonstrate the utility of this technique for the computation of the normal and shear strain tensors.</description><subject>Biomedical imaging</subject><subject>Capacitive sensors</subject><subject>Displacement measurement</subject><subject>Iterative algorithms</subject><subject>Least squares approximation</subject><subject>Radio frequency</subject><subject>Tensile stress</subject><subject>Ultrasonic imaging</subject><subject>Ultrasonic variables measurement</subject><subject>Uniaxial strain</subject><issn>1051-0117</issn><isbn>9780780384125</isbn><isbn>0780384121</isbn><fulltext>true</fulltext><rsrctype>conference_proceeding</rsrctype><creationdate>2004</creationdate><recordtype>conference_proceeding</recordtype><sourceid>6IE</sourceid><sourceid>RIE</sourceid><recordid>eNotkN1Kw0AQhRdUsNY-QW_2BRL3N5tcSqlaiHhhe-FVmWxm40q6Kdmt0Lc3auHADGeGD84hZMlZzjmrHnb19v3jNReMqZwrbopCXpFFZUo2SZaKC31NZpxpnjHOzS25i_GLMcG0UDNi1zH5AyQ_BDo42vp47MHiAUOi32jTMEYKoaUxjeADTRjirzWt2ENMQzfC8fNMT9GHbnrsTj2M0zUOwTtv_7jxntw46CMuLnNOdk_r7eolq9-eN6vHOvPc6JRBJaqqLBGbRpoGDSjpmGmFlaA1lhYL1lqLsnKNK6wWRoHVgIY3xRROGTkny3-uR8T9cZxyjef9pRP5A770WXg</recordid><startdate>2004</startdate><enddate>2004</enddate><creator>Techavipoo, U.</creator><creator>Quan Chen</creator><creator>Varghese, T.</creator><creator>Zagzebski, J.A.</creator><general>IEEE</general><scope>6IE</scope><scope>6IH</scope><scope>CBEJK</scope><scope>RIE</scope><scope>RIO</scope></search><sort><creationdate>2004</creationdate><title>Estimation of displacement vectors and strain tensors in elastography using angular insonifications</title><author>Techavipoo, U. ; Quan Chen ; Varghese, T. ; Zagzebski, J.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i175t-a929988eebb37be7a43f07d2c3a55e8ce60dcce39fbf6c5274ac5ae71b6051473</frbrgroupid><rsrctype>conference_proceedings</rsrctype><prefilter>conference_proceedings</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Biomedical imaging</topic><topic>Capacitive sensors</topic><topic>Displacement measurement</topic><topic>Iterative algorithms</topic><topic>Least squares approximation</topic><topic>Radio frequency</topic><topic>Tensile stress</topic><topic>Ultrasonic imaging</topic><topic>Ultrasonic variables measurement</topic><topic>Uniaxial strain</topic><toplevel>online_resources</toplevel><creatorcontrib>Techavipoo, U.</creatorcontrib><creatorcontrib>Quan Chen</creatorcontrib><creatorcontrib>Varghese, T.</creatorcontrib><creatorcontrib>Zagzebski, J.A.</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>Techavipoo, U.</au><au>Quan Chen</au><au>Varghese, T.</au><au>Zagzebski, J.A.</au><format>book</format><genre>proceeding</genre><ristype>CONF</ristype><atitle>Estimation of displacement vectors and strain tensors in elastography using angular insonifications</atitle><btitle>IEEE Ultrasonics Symposium, 2004</btitle><stitle>ULTSYM</stitle><date>2004</date><risdate>2004</risdate><volume>1</volume><spage>40</spage><epage>43 Vol.1</epage><pages>40-43 Vol.1</pages><issn>1051-0117</issn><isbn>9780780384125</isbn><isbn>0780384121</isbn><abstract>We describe a new method for estimating all the components of the tissue displacement vector following a quasi-static compression. The method uses displacements estimated from radiofrequency echo-signals along multiple ultrasound beam insonification directions. At each spatial location in the compressed medium, orthogonal tissue displacements in both the axial and lateral directions with respect to the direction of the applied compression are estimated using least squares solutions. The components of the corresponding normal and shear strain tensors are then estimated. Simulation and experimental results demonstrate the utility of this technique for the computation of the normal and shear strain tensors.</abstract><pub>IEEE</pub><doi>10.1109/ULTSYM.2004.1417663</doi></addata></record> |
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| subjects | Biomedical imaging Capacitive sensors Displacement measurement Iterative algorithms Least squares approximation Radio frequency Tensile stress Ultrasonic imaging Ultrasonic variables measurement Uniaxial strain |
| title | Estimation of displacement vectors and strain tensors in elastography using angular insonifications |
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