Volumetric Synthetic Aperture Imaging with a Piezoelectric 2-D Row-Column Probe.

Hamed Bouzari, Mathias Engholm, Thomas Lehrmann Christiansen, Christopher Beers, Anders Lei, Matthias Bo Stuart, Svetoslav Ivanov Nikolov, Erik Vilain Thomsen, Jørgen Arendt Jensen

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    Abstract

    The synthetic aperture (SA) technique can be used for achieving real-time volumetric ultrasound imaging using
    2-D row-column addressed transducers. This paper investigates SA volumetric imaging performance of an in-house
    prototyped 3 MHz λ/2-pitch 62+62 element piezoelectric 2-D row-column addressed transducer array. Utilizing
    single element transmit events, a volume rate of 90 Hz down to 14 cm deep is achieved. Data are obtained
    using the experimental ultrasound scanner SARUS with a 70 MHz sampling frequency and beamformed using a
    delay-and-sum (DAS) approach. A signal-to-noise ratio of up to 32 dB is measured on the beamformed images
    of a tissue mimicking phantom with attenuation of 0.5 dB cm−1 MHz−1, from the surface of the probe to the
    penetration depth of 300λ. Measured lateral resolution as Full-Width-at-Half-Maximum (FWHM) is between 4λ
    and 10λ for 18 % to 65 % of the penetration depth from the surface of the probe. The averaged contrast is 13 dB
    for the same range. The imaging performance assessment results may represent a reference guide for possible
    applications of such an array in different medical fields
    Original languageEnglish
    Title of host publicationProceedings of SPIE
    EditorsNeb Duric, Brecht Heyde
    Number of pages9
    Volume9790
    PublisherSPIE - International Society for Optical Engineering
    Publication date2016
    Article number97900Y
    DOIs
    Publication statusPublished - 2016
    EventSPIE Medical Imaging 2016: Ultrasonic Imaging and Tomography - Town & Country Resort and Convention Cente, San Diego, United States
    Duration: 27 Feb 20163 Mar 2016
    Conference number: 9790
    https://spie.org/conferences-and-exhibitions/past-conferences-and-exhibitions/medical-imaging-2016

    Conference

    ConferenceSPIE Medical Imaging 2016
    Number9790
    LocationTown & Country Resort and Convention Cente
    Country/TerritoryUnited States
    CitySan Diego
    Period27/02/201603/03/2016
    Internet address

    Keywords

    • 3-D ultrasound imaging
    • 2-D row-column addressed transducer,
    • Synthetic aperture (SA)

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