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High-resolution Fiber-optic Microendoscopy for in situ Cellular Imaging
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Fiber-Optic-Based System for High-Resolution Monitoring of Stretch in Excised Tissues.

Antonio Velarte1, Aranzazu Otin2, Pablo Giménez-Gómez3

  • 1Biomedical Signal Interpretation and Computational Simulation (BSICoS) Group, I3A Institute, IIS Aragón, University of Zaragoza, 50018 Zaragoza, Spain.

Biosensors
|October 27, 2023
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel optical fiber sensor to precisely measure tissue stretch in excised tissues. This innovation enhances understanding of cardiovascular disease biomechanics and enables real-time control.

Keywords:
POFbiosensorscardiacexcised tissuesstretch sensor

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Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Biophysics

Background:

  • Cardiovascular diseases (CVDs) are a leading cause of mortality globally.
  • Understanding the mechanical properties of cardiac tissues is crucial for diagnosing and treating CVDs.
  • Current methods for assessing tissue biomechanics may lack precision or real-time capabilities.

Purpose of the Study:

  • To develop and validate a high-precision sensor for measuring tissue stretch in excised cardiovascular tissues.
  • To enable real-time monitoring of biomechanical properties.
  • To provide a tool for improved understanding of the underlying mechanisms of cardiovascular abnormalities.

Main Methods:

  • Development of a biocompatible sensor system using two cantilevered platforms.
  • Integration of optical fibers within the platforms to measure displacement.
  • Utilizing the variation in optical path length to quantify tissue stretch with micrometer precision.
  • Testing the sensor's performance with excised tissues under various conditions.

Main Results:

  • The developed sensor system achieved a resolution of approximately 1 micrometer (μm) for tissue stretch measurement.
  • The system demonstrated reliable performance in quantifying biomechanical properties.
  • The design allows for tissue immersion in various media, facilitating diverse experimental setups.

Conclusions:

  • The novel optical fiber sensor offers a precise and reliable method for measuring tissue stretch in excised tissues.
  • This technology can significantly advance the study of cardiovascular tissue biomechanics.
  • The system's capabilities support improved understanding and potential real-time management of cardiovascular conditions.