Sparse Volumetric PZT Array with Density Tapering

Rik Vos, Enrico Boni, Filippo Piccardi, Andrea Traversi, Davide Galeotti, Emile Noothout, Verya Daeichin, Martin Verweij, Nico de Jong, More Authors

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientific

    3 Citations (Scopus)

    Abstract

    Volumetric medical ultrasound imaging currently provides either high resolution or high frame rates. We propose a sparse array probe with only 256 elements that are density tapered. All elements are directly wired to an ultrasound engine, thus being flexible in transmission and reception. Here we present the design, realization, and characterization of a probe prototype for carotid 3D high frame rate scanning (5 MHz). The design is based on rapid prototyping with printed circuit board substrates to wire the elements to external connectors. The results show that 95% of the elements was acoustically active, producing a peak pressure of 400 kPa when focused at 24 mm with a 20 V amplitude, 3-cycle tone burst. The fractional one-way −6dB bandwidth (FBW) was 32 %, which is narrower than the designed one (50% FBW), due to an unexplained ringing effect. These results show that the probe is viable for volumetric imaging tests, albeit that it can be further optimized.
    Original languageEnglish
    Title of host publication 2018 IEEE International Ultrasonics Symposium (IUS)
    EditorsK. Hashimoto, C. Ruppel
    PublisherIEEE
    Number of pages4
    ISBN (Electronic)978-1-5386-3425-7
    DOIs
    Publication statusPublished - 2018
    Event2018 IEEE International Ultrasonics Symposium, IUS 2018 - Portopia Hotel, Kobe, Japan
    Duration: 22 Oct 201825 Oct 2018

    Conference

    Conference2018 IEEE International Ultrasonics Symposium, IUS 2018
    Abbreviated titleIUS 2018
    Country/TerritoryJapan
    CityKobe
    Period22/10/1825/10/18

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