Blood velocity estimation using spatio-temporal encoding based on frequency division approach

Fredrik Gran, Svetoslav Nikolov, Jørgen Arendt Jensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

In this paper a feasibility study of using a spatial encoding technique based on frequency division for blood flow estimation is presented. The spatial encoding is carried out by dividing the available bandwidth of the transducer into a number of narrow frequency bands with approximately disjoint spectral support. By assigning one band to one virtual source, all virtual sources can be excited simultaneously. The received echoes are beamformed using Synthetic Transmit Aperture beamforming. The velocity of the moving blood is estimated using a cross- correlation estimator. The simulation tool Field II was used to carry out the study. Three different flow angles were investigated: 45 ◦ ,60 ◦ and 75 ◦ , and all setups were investigated for four different velocities: 0.10, 0.25, 0.50, 1.00 m/s. The mean relative bias was below 4% in all simulations and the mean relative standard deviation was below 3%
Original languageEnglish
Title of host publicationIEEE Ultrasonics Symposium
PublisherIEEE
Publication date2005
Pages1344-1347
ISBN (Print)0-7803-9382-1
DOIs
Publication statusPublished - 2005
Event2005 IEEE Ultrasonics Symposium - Rotterdam, Netherlands
Duration: 18 Sep 200521 Sep 2005
http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=10674

Conference

Conference2005 IEEE Ultrasonics Symposium
CountryNetherlands
CityRotterdam
Period18/09/200521/09/2005
Internet address

Keywords

  • medical ultrasound
  • Blood velocity estimation
  • spatial enconding

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