Blind calibration for arrays with an aberration layer in ultrasound imaging

P van der Meulen, M Coutino, Pieter Kruizinga, Hans Bosch, G Leus

Research output: Chapter/Conference proceedingConference proceedingAcademicpeer-review

1 Citation (Scopus)

Abstract

We consider the scenario of finding the transfer function of an aberrating layer in front of an ultrasound array. We are interested in blindly estimating this transfer function without prior knowledge of the unknown ultrasound sources or ultrasound contrast image. The algorithm gives an exact solution if the matrix representing the aberration layer's transfer function is full rank, up to a scaling and reordering of its columns, which has to be resolved using some prior knowledge of the matrix structure. We provide conditions for the robustness of blind calibration in noise. Numerical simulations show that the method becomes more robust for shorter wavelengths, as the transfer function matrices then tend to be less ill-conditioned. Image reconstruction from simulated data using the k-Wave toolbox show that a well calibrated model removes some of the distortions introduced by an uncalibrated model, and improves the resolution for some of the sources.

Original languageEnglish
Title of host publication28th European Signal Processing Conference, EUSIPCO 2020 - Proceedings
Pages1269-1273
Number of pages5
ISBN (Electronic)9789082797053
DOIs
Publication statusPublished - 24 Jan 2021

Bibliographical note

Funding Information:
This work is part of the ASPIRE project (project 14926 within the STW OTP programme), which is financed by the Netherlands Organisation for Scientific Research (NWO).

Publisher Copyright:
© 2021 European Signal Processing Conference, EUSIPCO. All rights reserved.

Research programs

  • EMC OR-01

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