3-D Velocity Estimation for Two Planes in vivo

Simon Holbek, Michael Johannes Pihl, Caroline Ewertsen, Michael Bachmann Bachmann, Jørgen Arendt Jensen

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    3-D velocity vectors can provide additional flow information applicable for diagnosing cardiovascular diseases e.g. by estimating the out-of-plane velocity component. A 3-D version of the Transverse Oscillation (TO) method has previously been used to obtain this information in a carotid flow phantom with constant flow. This paper presents the first in vivo measurements of the 3-D velocity vector, which were obtained over 3 cardiac cycles in the common carotid artery of a 32-year-old healthy male volunteer. Data were acquired using a Vermon 3.5 MHz 32x32 element 2-D phased array transducer and stored on the experimental scanner SARUS. The full 3-D velocity profile can be created and examined at peak-systole and end-diastole without ECG gating in two planes. Maximum out-of-plane velocities for the three peak-systoles and end-diastoles were 68.5 5.1 cm/s and 26.3 3.3 cm/s, respectively. In the longitudinal plane, average maximum peak velocity in flow direction was 65.2 14.0 cm/s at peak-systole and 33.6 4.3 cm/s at end-diastole. A commercial BK Medical ProFocus UltraView scanner using a spectral estimator gave 79.3 cm/s and 14.6 cm/s for the same volunteer. This demonstrates that real-time 3-D vector velocity imaging without ECG gating yields quantitative in vivo estimations on flow direction and magnitude
    Original languageEnglish
    Title of host publicationProceedings of IEEE International Ultrasonics Symposium
    Publication date2014
    ISBN (Print)978-1-4799-7049-0
    Publication statusPublished - 2014
    Event2014 IEEE International Ultrasonics Symposium - Hilton Hotel, Chicago, United States
    Duration: 3 Sept 20146 Sept 2014


    Conference2014 IEEE International Ultrasonics Symposium
    LocationHilton Hotel
    Country/TerritoryUnited States
    Internet address


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