Perpendicular ultrasound velocity measurement by 2D cross correlation of RF data. Part B: volume flow estimation in curved vessels

Bart W. A. M. M. Beulen, Anna Catharina Verkaik, Nathalie Bijnens*, Marcel C. M. Rutten, Frans van de Vosse

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

15 Citations (Web of Science)


A novel axial velocity profile integration method, obtained from ultrasonic perpendicular velocimetry, for flow estimation in curved tubes was validated. In an experimental set-up, physiologically relevant curved geometries and flows were considered. Axial velocity profile measurements were taken by applying particle imaging velocimetry-based methods to ultrasound data acquired by means of a linear array transducer positioned perpendicular to the axial velocity component. Comparison of the assessed asymmetric velocity profiles to computational fluid dynamics calculations showed excellent agreement. Subsequently, the recently introduced cos ?-integration method for flow estimation was compared to the presently applied poiseuille and womersley models. The average deviation between the cos ?-integration-based unsteady flow estimate and the reference flow was about 5%, compared to an average deviation of 20% for both the poiseuille and womersley approximation. Additionally, the effect of off-centre measurement was analysed for the three models. It was found that only for the cos ?-integration method, an accurate flow estimation is feasible, even when it is measured off centre.
Original languageEnglish
Pages (from-to)1219-1229
JournalExperiments in Fluids
Issue number6
Publication statusPublished - Dec 2010

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