Noise reduction using spatial-angular compounding for elastography
Ultrasound elastography has developed into an imaging modality suitable for detection and diagnosis of cancers in the breast, prostate, and thyroid and for monitoring ablative therapies in the liver, kidneys, and other sites. In this article, a new approach is described that enables the reduction of...
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| Veröffentlicht in: | IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2004-05, Vol.51 (5), p.510-520 |
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| container_title | IEEE transactions on ultrasonics, ferroelectrics, and frequency control |
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| creator | TECHAVIPOO, Udomchai QUAN CHEN VARGHESE, Tomy ZAGZEBSKI, James A MADSEN, Ernest L |
| description | Ultrasound elastography has developed into an imaging modality suitable for detection and diagnosis of cancers in the breast, prostate, and thyroid and for monitoring ablative therapies in the liver, kidneys, and other sites. In this article, a new approach is described that enables the reduction of noise artifacts in elastography without a significant reduction in either the contrast or spatial resolution. The technique uses angular-weighted compounding of local angular strains estimated from echo signals scanned at different insonification angles. Strain estimated along angular insonification directions can be separated into strain tensor components along the axial (direction of compression) and lateral directions. The mechanical stimulus is applied only along one direction. Angular-weighting factors are derived from the relationship between the axial and lateral strains under the assumption of tissue incompressibility. Experimental results using a uniformly elastic, tissue-mimicking phantom demonstrate the improvement in the signal-to-noise ratio obtained with angular-weighted compounding. Variation in the signal-to-noise ratio obtained using different angular increments also is investigated. Elastograms obtained from an inclusion phantom also demonstrate the improvement in contrast detail resolution obtained using spatial-angular compounding. |
| doi_str_mv | 10.1109/TUFFC.2004.1308687 |
| format | Article |
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In this article, a new approach is described that enables the reduction of noise artifacts in elastography without a significant reduction in either the contrast or spatial resolution. The technique uses angular-weighted compounding of local angular strains estimated from echo signals scanned at different insonification angles. Strain estimated along angular insonification directions can be separated into strain tensor components along the axial (direction of compression) and lateral directions. The mechanical stimulus is applied only along one direction. Angular-weighting factors are derived from the relationship between the axial and lateral strains under the assumption of tissue incompressibility. Experimental results using a uniformly elastic, tissue-mimicking phantom demonstrate the improvement in the signal-to-noise ratio obtained with angular-weighted compounding. Variation in the signal-to-noise ratio obtained using different angular increments also is investigated. 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QUAN CHEN ; VARGHESE, Tomy ; ZAGZEBSKI, James A ; MADSEN, Ernest L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c277t-79fb7c0056a0cb3867015d095b52f6300002a28c624fd56f83d8cb17b0b7d50b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2004</creationdate><topic>Acoustics</topic><topic>Algorithms</topic><topic>Breast - physiology</topic><topic>Compressive Strength - physiology</topic><topic>Elasticity</topic><topic>Exact sciences and technology</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>General equipment and techniques</topic><topic>Humans</topic><topic>Image Enhancement - methods</topic><topic>Image Interpretation, Computer-Assisted - methods</topic><topic>Instruments, apparatus, components and techniques common to several branches of physics and astronomy</topic><topic>Phantoms, Imaging</topic><topic>Physical Stimulation - instrumentation</topic><topic>Physical Stimulation - methods</topic><topic>Physics</topic><topic>Reproducibility of Results</topic><topic>Scattering, Radiation</topic><topic>Sensitivity and Specificity</topic><topic>Stochastic Processes</topic><topic>Transducers</topic><topic>Ultrasonics, quantum acoustics, and physical effects of sound</topic><topic>Ultrasonography - instrumentation</topic><topic>Ultrasonography - methods</topic><topic>Ultrasonography, Mammary - instrumentation</topic><topic>Ultrasonography, Mammary - methods</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>TECHAVIPOO, Udomchai</creatorcontrib><creatorcontrib>QUAN CHEN</creatorcontrib><creatorcontrib>VARGHESE, Tomy</creatorcontrib><creatorcontrib>ZAGZEBSKI, James A</creatorcontrib><creatorcontrib>MADSEN, Ernest L</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</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</fulltext></delivery><addata><au>TECHAVIPOO, Udomchai</au><au>QUAN CHEN</au><au>VARGHESE, Tomy</au><au>ZAGZEBSKI, James A</au><au>MADSEN, Ernest L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Noise reduction using spatial-angular compounding for elastography</atitle><jtitle>IEEE transactions on ultrasonics, ferroelectrics, and frequency control</jtitle><addtitle>IEEE Trans Ultrason Ferroelectr Freq Control</addtitle><date>2004-05</date><risdate>2004</risdate><volume>51</volume><issue>5</issue><spage>510</spage><epage>520</epage><pages>510-520</pages><issn>0885-3010</issn><eissn>1525-8955</eissn><coden>ITUCER</coden><abstract>Ultrasound elastography has developed into an imaging modality suitable for detection and diagnosis of cancers in the breast, prostate, and thyroid and for monitoring ablative therapies in the liver, kidneys, and other sites. In this article, a new approach is described that enables the reduction of noise artifacts in elastography without a significant reduction in either the contrast or spatial resolution. The technique uses angular-weighted compounding of local angular strains estimated from echo signals scanned at different insonification angles. Strain estimated along angular insonification directions can be separated into strain tensor components along the axial (direction of compression) and lateral directions. The mechanical stimulus is applied only along one direction. Angular-weighting factors are derived from the relationship between the axial and lateral strains under the assumption of tissue incompressibility. Experimental results using a uniformly elastic, tissue-mimicking phantom demonstrate the improvement in the signal-to-noise ratio obtained with angular-weighted compounding. Variation in the signal-to-noise ratio obtained using different angular increments also is investigated. 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| subjects | Acoustics Algorithms Breast - physiology Compressive Strength - physiology Elasticity Exact sciences and technology Fundamental areas of phenomenology (including applications) General equipment and techniques Humans Image Enhancement - methods Image Interpretation, Computer-Assisted - methods Instruments, apparatus, components and techniques common to several branches of physics and astronomy Phantoms, Imaging Physical Stimulation - instrumentation Physical Stimulation - methods Physics Reproducibility of Results Scattering, Radiation Sensitivity and Specificity Stochastic Processes Transducers Ultrasonics, quantum acoustics, and physical effects of sound Ultrasonography - instrumentation Ultrasonography - methods Ultrasonography, Mammary - instrumentation Ultrasonography, Mammary - methods |
| title | Noise reduction using spatial-angular compounding for elastography |
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