Sparsity driven ultrasound imaging

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Abstract

An image formation framework for ultrasound imaging from synthetic transducer arrays based on sparsity-driven regularization functionals using single-frequency Fourier domain data is proposed. The framework involves the use of a physics-based forward model of the ultrasound observation process, the formulation of image formation as the solution of an associated optimization problem, and the solution of that problem through efficient numerical algorithms. The sparsity-driven, model-based approach estimates a complex-valued reflectivity field and preserves physical features in the scene while suppressing spurious artifacts. It also provides robust reconstructions in the case of sparse and reduced observation apertures. The effectiveness of the proposed imaging strategy is demonstrated using experimental data.

Available Versions of this Item

• Sparsity driven ultrasound imaging. (deposited 08 Dec 2010 10:48)
  • Sparsity driven ultrasound imaging. (deposited 23 Dec 2011 10:37)
    • Sparsity driven ultrasound imaging. (deposited 05 Apr 2012 11:49) [Currently Displayed]