Transverse oscillation vector flow imaging for transthoracic echocardiography

David Bradway, Kristoffer Lindskov Hansen, Michael Bachmann Nielsen, Jørgen Arendt Jensen

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Abstract

This work presents the development and first results of in vivo transthoracic cardiac imaging using an implementation of Vector Flow Imaging (VFI) via the Transverse Oscillation (TO) method on a phased-array transducer. Optimal selection of the lateral wavelength of the transversely-oscillating receive field is described, and results from Field II simulations are presented. Measurements are made using the SARUS experimental ultrasound scanner driving an intercostal phased-array probe. The acquisition sequence was composed of interleaved frames of 68-line B-mode and 17-direction, 32-shot vector velocity flow images. A flow pump was programmed for constant flow for in vitro acquisitions at varying depths in a tissue-mimicking fluid. Additionally, mitral, aortic,and tricuspid valves of two healthy volunteers were scanned from intercostal acoustic windows. The acquired RF data were beamformed via the TO method, and fourth-order estimators were employed for the velocity estimation. The resulting images were compared with those from conventional spectral Doppler and color flow mapping sequences. VFI is shown to be a clinically-feasible tool, which enables new exibility for choosing acoustic windows, visualizing turbulent ow patterns, and measuring velocities.
Original languageEnglish
Title of host publicationProceedings of SPIE
EditorsJohan G. Bosch, Neb Duric
Number of pages9
Volume9419
PublisherSPIE - International Society for Optical Engineering
Publication date2015
Article number941902
ISBN (Print)9781628415094
DOIs
Publication statusPublished - 2015
EventSPIE Medical Imaging 2015 - Orlando, FL, United States
Duration: 21 Feb 201526 Feb 2015

Conference

ConferenceSPIE Medical Imaging 2015
CountryUnited States
CityOrlando, FL
Period21/02/201526/02/2015
SeriesProceedings of SPIE, the International Society for Optical Engineering
Volume9419
ISSN0277-786X

Bibliographical note

Copyright 2015 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

  • Medical Ultrasound
  • Vector Flow Imaging
  • Cardiac imaging
  • Blood Flow
  • Transverse Oscillation

Cite this

Bradway, D., Lindskov Hansen, K., Nielsen, M. B., & Jensen, J. A. (2015). Transverse oscillation vector flow imaging for transthoracic echocardiography. In J. G. Bosch, & N. Duric (Eds.), Proceedings of SPIE (Vol. 9419). [941902 ] SPIE - International Society for Optical Engineering. Proceedings of SPIE, the International Society for Optical Engineering, Vol.. 9419 https://doi.org/10.1117/12.2081145