3 research outputs found

    Robust Capon Beamformer with frequency Smoothing applied to medical ultrasound imaging

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    In recent years, Robust Capon Beamformer with Spatial Smoothing (RCB-SS) has improved ultrasound imaging. The RCB-SS is implemented in the time domain and spatial smoothing has the disadvantage of reducing the effective aperture leading to lower lateral resolution. In this paper, we propose a new adaptive beamformer in the frequency domain using frequency smoothing. We investigate the performance of our method using experimental data and compare its performance with RCB-SS and Delay and Sum (DAS) beam-former. Our method has a narrower mainlobe width, lower sidelobes, stronger interference suppression, less speckle and better reconstruction at higher depths than RCB-SS and DAS beamforming. The proposed method also shows better performance when the aperture size is reduced, thus allowing higher frame rates and lower data storage

    Robust Capon Beamformer with frequency Smoothing applied to medical ultrasound imaging

    No full text
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