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Updated: May 16, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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SURF imaging beams in an aberrative medium: Generation and postprocessing enhancement.

Sven Peter Näsholm, Bjørn A J Angelsen

    IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
    |November 30, 2012
    PubMed
    Summary

    This study simulates ultrasound reverberation suppression through dual-frequency pulses, even with body wall distortions. The findings confirm the technique

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    Area of Science:

    • Medical Ultrasound
    • Acoustic Imaging
    • Biomedical Engineering

    Background:

    • Ultrasound reverberation suppression techniques, like second-order ultrasound field (SURF), are crucial for diagnostic imaging.
    • Previous studies on SURF focused on homogeneous media, neglecting the impact of biological tissue variations.
    • Body walls introduce significant wave front distortion (aberration), potentially compromising reverberation suppression effectiveness.

    Discussion:

    • This research investigates the performance of SURF transmit-pulse complexes and postprocessing methods in the presence of a simulated aberrating body wall.
    • Dual-frequency pulses combine a 3.5-MHz imaging pulse with a 0.5-MHz sound speed manipulation pulse for enhanced suppression.
    • The study models body wall aberration using a sequence of delay screens to simulate realistic propagation paths.

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    Key Insights:

    • Numerical simulations demonstrate the feasibility of generating synthetic SURF transmit beams despite significant body wall-induced time delays.
    • Postprocessing methods for adjusting SURF reverberation suppression depth remain effective even with aberrated wave fronts.
    • The technique proves robust, handling time delays exceeding those previously reported in human body wall specimens.

    Outlook:

    • Further validation with in-vivo human studies is warranted to confirm the clinical applicability of SURF in aberrating environments.
    • Optimization of dual-frequency pulse parameters could enhance performance in diverse anatomical locations.
    • This work paves the way for improved ultrasound imaging in challenging clinical scenarios requiring effective reverberation suppression.