Enabling strain imaging in realistic Eulerian ultrasound simulation methods.

Autor: Muller JW; Photoacoustics & Ultrasound Laboratory Eindhoven (PULS/e), Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Department of Vascular Surgery, Catharina Hospital, Eindhoven, The Netherlands. Electronic address: j.w.muller@tue.nl., Schwab HM; Photoacoustics & Ultrasound Laboratory Eindhoven (PULS/e), Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands. Electronic address: h.schwab@tue.nl., Wu M; Photoacoustics & Ultrasound Laboratory Eindhoven (PULS/e), Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands. Electronic address: m.wu@tue.nl., Rutten MCM; Cardiovascular Biomechanics Group, Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands. Electronic address: m.c.m.rutten@tue.nl., van Sambeek MRHM; Photoacoustics & Ultrasound Laboratory Eindhoven (PULS/e), Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands; Department of Vascular Surgery, Catharina Hospital, Eindhoven, The Netherlands. Electronic address: marc.v.sambeek@catharinaziekenhuis.nl., Lopata RGP; Photoacoustics & Ultrasound Laboratory Eindhoven (PULS/e), Dept. of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands. Electronic address: r.lopata@tue.nl.
Jazyk: angličtina
Zdroj: Ultrasonics [Ultrasonics] 2023 Dec; Vol. 135, pp. 107127. Date of Electronic Publication: 2023 Aug 01.
DOI: 10.1016/j.ultras.2023.107127
Abstrakt: Cardiovascular strain imaging is continually improving due to ongoing advances in ultrasound acquisition and data processing techniques. The phantoms used for validation of new methods are often burdensome to make and lack flexibility to vary mechanical and acoustic properties. Simulations of US imaging provide an alternative with the required flexibility and ground truth strain data. However, the current Lagrangian US strain imaging models cannot simulate heterogeneous speed of sound distributions and higher-order scattering, which limits the realism of the simulations. More realistic Eulerian modelling techniques exist but have so far not been used for strain imaging. In this research, a novel sampling scheme was developed based on a band-limited interpolation of the medium, which enables accurate strain simulation in Eulerian methods. The scheme was validated in k-Wave using various numerical phantoms and by a comparison with Field II. The method allows for simulations with a large range in strain values and was accurate with errors smaller than -60 dB. Furthermore, an excellent agreement with the Fourier theory of US scattering was found. The ability to perform simulations with heterogeneous speed of sound distributions was demonstrated using a pulsating artery model. The developed sampling scheme contributes to more realistic strain imaging simulations, in which the effect of heterogenous acoustic properties can be taken into account.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 The Author(s). Published by Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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