Pulse coding with complementary Golay sequences for signal to noise ratio improvement in ultrasound mammography

buir.contributor.authorKöymen, Hayrettin
dc.citation.epage7en_US
dc.citation.spage1en_US
dc.contributor.authorKumru, Yasinen_US
dc.contributor.authorEnhoş, Keremen_US
dc.contributor.authorKöymen, Hayrettinen_US
dc.coverage.spatialVictoria, Canada
dc.date.accessioned2019-02-21T16:06:29Z
dc.date.available2019-02-21T16:06:29Z
dc.date.issued2018-11en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionDate of Conference: 5-9 Nov. 2018
dc.descriptionConference name: 176th Meeting of Acoustical Society of America - 2018 Acoustics Week in Canada
dc.description.abstractThe main objective of this study is to obtain improved detection of 50 μm breast microcalcifications in ultrasound mammography. A synthetic transmit aperture imaging method combined with coded excitation and pulse compression is employed. Coded excitation by means of complementary Golay sequences and pulse compression at each transducer element improve the signal to noise ratio and enhance the visualization of the microcalcifications despite the fact that the process is computationally complex. Correlation based beamforming is also applied to the experimental data, resulting in significant improvement in image quality. In this study, pre-beamformed raw data is collected by an ultrasound research scanner, DiPhAS, where a 7.5 MHz phased array transducer with 128 element and 0.1 mm pitch was used. Benefits of coded excitation compared to tone burst excitation of equal energy are clearly observed. The ultrasound images of monofilament nylon wire targets in the phantom are presented, where the superiority of coded excitation is evident. The image reconstruction is performed by using Synthetic Transmit Aperture imaging method with single emission and 5 emissions, respectively. The experimental results show that efficient implementation of coded excitation improves signal to noise ratio, increases penetration depth and provides images with better resolution.
dc.description.provenanceMade available in DSpace on 2019-02-21T16:06:29Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 222869 bytes, checksum: 842af2b9bd649e7f548593affdbafbb3 (MD5) Previous issue date: 2018en
dc.description.sponsorshipThis work was supported by the Scientific and Technological Research Council of Turkey under Project Grant 114E588. The authors also would like to express particular thanks to the acoustic group of Bilkent University for their contribution to improve this work.
dc.identifier.doi10.1121/2.0000942
dc.identifier.issn1939-800X
dc.identifier.urihttp://hdl.handle.net/11693/50314
dc.language.isoEnglish
dc.publisherAcoustical Society of America
dc.relation.isversionofhttps://doi.org/10.1121/2.0000942
dc.relation.projectBilkent Üniversitesi - Türkiye Bilimsel ve Teknolojik Araştirma Kurumu, TÜBITAK: 114E588
dc.source.titleProceedings of Meetings on Acousticsen_US
dc.titlePulse coding with complementary Golay sequences for signal to noise ratio improvement in ultrasound mammographyen_US
dc.typeConference Paperen_US

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