Transverse Oscillation Vector Velocity Estimation using a Phased Array Transducer

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2012

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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
StatePublished

Conference

Conference2012 IEEE International Ultrasonics Symposium
CountryGermany
CityDresden
Period07/10/1210/10/12
Internet addresshttps://ius2012.ifw-dresden.de
CitationsWeb of Science® Times Cited: 0

Keywords

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