Ultrafast ultrasound imaging as an inverse problem: Matrix-free sparse image reconstruction

Adrien Besson, Dimitris Perdios, Florian Martinez, Zhouye Chen, Rafael E. Carrillo, Marcel Arditi, Yves Wiaux, Jean-Philippe Thiran

Research output: Contribution to journalArticle

7 Citations (Scopus)
71 Downloads (Pure)

Abstract

Conventional ultrasound (US) image reconstruction methods rely on delay-and-sum (DAS) beamforming, which is a relatively poor solution to the image reconstruction problem. An alternative to DAS consists in using iterative techniques, which require both an accurate measurement model and a strong prior on the image under scrutiny. Toward this goal, much effort has been deployed in formulating models for US imaging, which usually require a large amount of memory to store the matrix coefficients. We present two different techniques, which take advantage of fast and matrix-free formulations derived for the measurement model and its adjoint, and rely on sparsity of US images in well-chosen models. Sparse regularization is used for enhanced image reconstruction. Compressed beamforming exploits the compressed sensing framework to restore high-quality images from fewer raw data than state-of-the-art approaches. Using simulated data and in vivo experimental acquisitions, we show that the proposed approach is three orders of magnitude faster than non-DAS state-of-the-art methods, with comparable or better image quality.
Original languageEnglish
Pages (from-to)339-355
Number of pages17
JournalIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Volume65
Issue number3
Early online date1 Nov 2017
DOIs
Publication statusPublished - Mar 2018

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