Co-array optimization of CMUT arrays for forward-looking IVUS

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dc.authorid0000-0002-2357-4424
dc.authorid0000-0001-9198-8525
dc.contributor.authorTekeş, Coşkunen_US
dc.contributor.authorKaraman, Mustafaen_US
dc.contributor.authorDeğertekin, Fahrettin Leventen_US
dc.date.accessioned2021-06-18T13:17:36Z
dc.date.available2021-06-18T13:17:36Z
dc.date.issued2009-09
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractThe ring annular array structure is a preferred configuration for implementing Forward-Looking IVUS (FLIVUS) catheters as it allows for volumetric imaging as well as use of a guidewire at the center. CMUT technology is promising for these arrays especially with the flexibility of locating array elements on the circular donut area efficiently. To take advantage of this flexibility, in this study, we introduce a new co-array sampling strategy that improves imaging performance while keeping the number of firings at a level suitable for real-time imaging. The presented co-array sampling strategy is based on the idea of adjusting the element density of the co-array rings in radial direction to suppress side lobes. In non-uniform sampling of the co-array with a given number of firings, the inter-element distances are adjusted both in radial and angular direction from inner ring to outer ring to fit a given apodization function. To test the imaging performance, we performed numerical simulations of the co-array with non-uniform sampling fitting to the raised-cosine apodization. The simulation results shows that sidelobe level can be reduced more than 10 dB by using non-uniform co-array sampling. This approach does use uniform weighting of all Tx and Rx elements in beamforming, and hence does not cause any SNR loss for apodization.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationTekeş, C., Karaman, M. & Değertekin, F. L. (2009). Co-array optimization of CMUT arrays for forward-looking IVUS, Paper presented at the IEEE International Ultrasonics Symposium, 1326-1329. doi:10.1109/ULTSYM.2009.5441519en_US
dc.identifier.doi10.1109/ULTSYM.2009.5441519
dc.identifier.endpage1329
dc.identifier.isbn9781424443895
dc.identifier.isbn9781424443901
dc.identifier.issn1948-5727
dc.identifier.issn1051-0117
dc.identifier.startpage1326
dc.identifier.urihttps://hdl.handle.net/11729/3159
dc.identifier.urihttp://dx.doi.org/10.1109/ULTSYM.2009.5441519
dc.indekslendigikaynakScopusen_US
dc.institutionauthorTekeş, Coşkunen_US
dc.institutionauthorKaraman, Mustafaen_US
dc.institutionauthorid0000-0002-2357-4424
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherIEEEen_US
dc.relation.ispartofIEEE International Ultrasonics Symposiumen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 United States*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/*
dc.subjectAcoustic signal processingen_US
dc.subjectAperturesen_US
dc.subjectApodization functionen_US
dc.subjectArray signal processingen_US
dc.subjectBandwidthen_US
dc.subjectBiomedical ultrasonicsen_US
dc.subjectCapacitive micromachined ultrasonic transducersen_US
dc.subjectCathetersen_US
dc.subjectCMUTen_US
dc.subjectCMUT arraysen_US
dc.subjectCo-arrayen_US
dc.subjectCoarray optimizationen_US
dc.subjectCoarray ring element densityen_US
dc.subjectCoarray sampling strategyen_US
dc.subjectFabricationen_US
dc.subjectFL-IVUS cathetersen_US
dc.subjectForward lookingen_US
dc.subjectForward looking IVUS cathetersen_US
dc.subjectForward-lookingen_US
dc.subjectGuidewireen_US
dc.subjectImaging performanceen_US
dc.subjectIntegrated circuit technologyen_US
dc.subjectIntravascular ultrasounden_US
dc.subjectMedical image processingen_US
dc.subjectNonuniform samplingen_US
dc.subjectPiezoelectric transducersen_US
dc.subjectRaised cosine apodisationen_US
dc.subjectRing annular array structureen_US
dc.subjectSampling methodsen_US
dc.subjectSampling strategiesen_US
dc.subjectSolid state circuitsen_US
dc.subjectUltrasonic imagingen_US
dc.subjectUltrasonic transducer arraysen_US
dc.subjectVolumetric imagingen_US
dc.titleCo-array optimization of CMUT arrays for forward-looking IVUSen_US
dc.typeConference Objecten_US

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