Efficient sensor array subsampling for plane-wave ultrasound imaging
Date
2020-05-05
Authors
Marzougui, Houssem
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Abstract
Ultrafast plane-wave ultrasound imaging offers very high frame rates (exceeding thousands of frames per second) but entails large volumes of backscattered data collected by a sensor array over multiple plane-wave emissions at different angles. We propose a simple method for reducing the total amount of sampled data. First, we acquire the zero-angle data in full, and then we perform deterministic subsampling of the remaining nonzero-angle data. Our subsampling patterns are angle-specific and derived based on the zero-angle data using a Fourier-domain migration technique. We use two experimental datasets to evaluate the benefits and drawbacks of our proposed method in terms of spatial resolution and contrast-to-noise ratio, observed in the resulting B-mode images.
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Keywords
Ultrasound Imaging, Compressive sensing, Downsampling, Stolt's migration, Coherent compounding