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3D Large-Scale Subwavelength-Resolution Sound Sheet Tomography Based on an Active and Programmable Circular

Qiu-De Zhang1,2, Zi-Bin Lin1, Zhuo Chen1

  • 1School of Physics and Innovation Institute, Huazhong University of Science and Technology, Wuhan, China.

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Summary
This summary is machine-generated.

This study introduces a novel circular meta-array for advanced ultrasound tomography, achieving high-resolution 3D imaging of deep structures. The system offers a versatile platform for biomedical imaging and therapeutic monitoring.

Keywords:
meta‐arraymusculoskeletal imagingultrasound computed tomography

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Area of Science:

  • Acoustics and Imaging Technologies
  • Biomedical Engineering
  • Materials Science

Background:

  • Tomography offers high-fidelity 3D visualization, crucial in science and engineering.
  • Ultrasound tomography provides safe, real-time, and cost-effective imaging.
  • Conventional ultrasound arrays face limitations in aperture, coverage, and resolution for deep structures.

Purpose of the Study:

  • To develop an advanced ultrasound tomography system overcoming limitations of conventional designs.
  • To achieve high-resolution, wide-angle imaging of internal structures.
  • To create a versatile platform for biomedical applications.

Main Methods:

  • Developed an active, programmable circular meta-array with 2048 channels and cylindrical acoustic lenses.
  • Generated wide-angle point-source radiation and a thin flat sound-sheet beam.
  • Utilized delay multiply and sum reconstruction for subwavelength resolution imaging.

Main Results:

  • Achieved omnidirectional coverage and dynamic focusing for comprehensive echo acquisition.
  • Obtained ultrasonic images with subwavelength resolution (approximately 0.8λ).
  • Successfully reconstructed complex 3D objects, including human soft tissues and musculoskeletal structures.

Conclusions:

  • The circular meta-array platform enables versatile ultrasound tomography.
  • Demonstrated subwavelength resolution and accurate 3D reconstruction of biological tissues.
  • Opens new avenues for advanced biomedical imaging and therapeutic monitoring.