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Related Experiment Video

Updated: Dec 30, 2025

Universal Hand-held Three-dimensional Optoacoustic Imaging Probe for Deep Tissue Human Angiography and Functional Preclinical Studies in Real Time
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Toroidally focused sensor array for real-time laser-ultrasonic imaging: The first experimental study.

Anton Bychkov1,2, Varvara Simonova3,4, Vasily Zarubin1,2

  • 1Laboratory of Laser Ultrasound Non-Destructive Control, The National University of Science and Technology MISiS, 4 Leninskiy Prospect, 119991 Moscow, Russia.

Photoacoustics
|January 21, 2020
PubMed
Summary

This study introduces a novel 2D real-time laser-ultrasonic imaging system capable of visualizing fine details like acupuncture needles deep within water. The advanced system achieves high resolution and fast frame rates for enhanced medical imaging applications.

Keywords:
Back projectionFocused arrayLaser ultrasoundLaser ultrasound imagingReal-timeTomographyToroidal array

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Area of Science:

  • Biomedical Engineering
  • Medical Imaging
  • Optics and Acoustics

Background:

  • Laser-ultrasonic imaging offers non-invasive visualization capabilities.
  • Real-time imaging is crucial for dynamic processes and interventions.
  • Existing systems face limitations in resolution and depth penetration.

Purpose of the Study:

  • To develop and demonstrate a toroidally focused 2D real-time laser-ultrasonic imaging system.
  • To improve imaging resolution and depth for visualizing small structures.
  • To evaluate the system's performance and potential for combined imaging modalities.

Main Methods:

  • Implementation of a toroidally focused 2D laser-ultrasonic imaging system.
  • Utilizing a modified filtered back projection algorithm for image reconstruction.
  • Experimental measurement of spatial resolution and depth dependency.

Main Results:

  • Successful visualization of a 0.2 mm acupuncture needle at 4 cm depth in water.
  • Achieved lateral spatial resolution better than 0.32 mm and axial resolution of approximately 30 μm.
  • Demonstrated a frame rate of up to 30 Hz with discussed depth dependency of sensitivity.

Conclusions:

  • The developed system represents a significant advancement in real-time laser-ultrasonic imaging.
  • The system's high resolution and speed are suitable for visualizing small, deep structures.
  • The technology holds promise for integration into combined photoacoustic and laser-ultrasonic imaging systems.