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Enhanced Lateral Resolution in Acoustic Imaging: From High- to Super-Resolution.

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  • 1Institute of Ultrasonic Testing, Jiangsu University, Zhenjiang 212013, China.

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Summary
This summary is machine-generated.

This review explores advanced techniques to overcome resolution limits in acoustic imaging, particularly ultrasound. It details methods for achieving higher lateral resolution, crucial for diverse applications.

Keywords:
acoustic imagingacoustic metamaterialsdeep learningdiffraction limitlateral resolutionsuper-resolution

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Area of Science:

  • Acoustics and Wave Physics
  • Materials Science
  • Biomedical Imaging

Background:

  • Acoustic imaging, including ultrasound, is vital for non-destructive evaluation, medical diagnostics, and materials analysis.
  • The performance of acoustic imaging is fundamentally limited by diffraction, specifically its lateral resolution.
  • Enhancing lateral resolution is critical for advancing the capabilities and applications of acoustic imaging technologies.

Purpose of the Study:

  • To systematically review and summarize recent advancements in overcoming diffraction-limited lateral resolution in acoustic imaging.
  • To provide a comprehensive overview of various techniques for improving acoustic lateral resolution.
  • To compare the advantages and disadvantages of different resolution enhancement methods and suggest future research directions.

Main Methods:

  • Review of traditional focusing techniques and transducer optimization.
  • Exploration of physical metamaterial lenses for acoustic wave manipulation.
  • Analysis of algorithmic optimization and deep learning-based approaches for resolution enhancement.

Main Results:

  • Identification of diverse strategies to surpass the diffraction limit in acoustic imaging.
  • Comparative analysis of the efficacy, benefits, and drawbacks of each method.
  • Synthesis of current research trends and emerging opportunities in high-resolution acoustic imaging.

Conclusions:

  • Significant progress has been made in enhancing acoustic lateral resolution through various innovative techniques.
  • A comparative understanding of these methods is essential for selecting optimal approaches for specific applications.
  • Future research should focus on integrating and advancing these techniques to unlock new frontiers in acoustic imaging.