Transverse Oscillation Vector Velocity Estimation using a Phased Array Transducer

Jønne Marcher, Michael Johannes Pihl, Gert Seerup, Per Haugaard, Svetoslav Ivanov Nikolov, Jørgen Arendt Jensen

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    Abstract

    The Transverse Oscillation method has shown its commercial feasibility, providing the user with 2D velocity information. Todays implementation on commercial ultrasound platforms only support linear array transducers and are limited in depth. Extending the implementation to a phased array
    transducer, vector velocity echocardiography will become possible. This paper describes the general modification made on the BK Medical 2202 Pro Focus UltraView using a 64 element phased array transducer and the simulations and measurements performed. The results show that velocities can be obtained at
    depths even greater than 100 mm. Tests at depths of 72 mm and 82 mm with a peak velocity of 0.5 m/s, showed a relative mean bias ~Bvx that varied from 0 % and to 21 % and a relative mean standard deviation ~vx that varied from 18 % and to 51 %. The investigation showed an increasing bias with respect to
    depth, which leaves room for optimization. Despite the bias, the method has shown to work and produce reliable results, and 2D velocity estimates are provided within the entire color-box down to a depth of more than 100 mm making vector velocity imaging possible in the entire heart.
    Original languageEnglish
    Title of host publicationProceedings of IEEE International Ultrasonics Symposium
    PublisherIEEE
    Publication date2012
    Pages1890-1893
    ISBN (Print)9781467345613
    DOIs
    Publication statusPublished - 2012
    Event2012 IEEE International Ultrasonics Symposium - The International Congress Center, Dresden, Germany
    Duration: 7 Oct 201210 Oct 2012
    https://ieeexplore.ieee.org/xpl/conhome/6552247/proceeding

    Conference

    Conference2012 IEEE International Ultrasonics Symposium
    LocationThe International Congress Center
    Country/TerritoryGermany
    CityDresden
    Period07/10/201210/10/2012
    Internet address

    Keywords

    • Arrays
    • Estimation
    • Imaging
    • Oscillators
    • Transducers
    • Ultrasonic imaging
    • Vectors

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