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Updated: May 31, 2026

Switchable Acoustic and Optical Resolution Photoacoustic Microscopy for In Vivo Small-animal Blood Vasculature Imaging
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In Vivo Microplastic Detection With Photoacoustic Imaging.

Joseph C Bear1, Olumide Ogunlade2,3, Jayvian Mavi4

  • 1School of Life Sciences, Pharmacy & Chemistry, Kingston University, Kingston upon Thames, UK.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|May 28, 2026
PubMed
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This summary is machine-generated.

A new non-invasive photoacoustic imaging technique allows tracking microplastics in living tissues. This method overcomes limitations of current invasive methods, enabling long-term biodistribution studies in preclinical models.

Area of Science:

  • Biomedical Engineering
  • Environmental Science
  • Toxicology

Background:

  • Microplastics pose significant ecological and human health risks.
  • Current methods for studying microplastic bioaccumulation are invasive and destructive, limiting research.
  • There is a critical need for non-invasive techniques to monitor microplastic biodistribution.

Purpose of the Study:

  • To develop and validate a novel non-invasive photoacoustic imaging technique for microplastic detection in living tissues.
  • To enable long-term tracking and characterization of microplastics in vivo.
  • To overcome limitations of existing imaging modalities for microplastic research.

Main Methods:

  • Exploiting the native optical absorption properties of microplastics to generate photoacoustic signals.
Keywords:
imagingin vivomicroplasticsoptoacousticsphotoacousticspolymers

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Last Updated: May 31, 2026

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  • Utilizing pulsed laser light and imageable ultrasound emission for detection.
  • Validating microplastic differentiation, tracking, and feature resolution through histological analysis.

    • Main Results:

    • Successfully demonstrated non-invasive, long-term tracking of microplastics in a mouse model for up to 2 months.
    • Achieved microscale resolution of microplastic features, distinguishing them from biological signals.
    • Verified the technique's efficacy and accuracy through histological comparison.

    Conclusions:

    • Photoacoustic imaging offers a groundbreaking non-invasive method for studying microplastic biodistribution dynamics in living organisms.
    • This technique facilitates the investigation of factors influencing microplastic accumulation, degradation, and clearance.
    • Enables serial monitoring crucial for understanding microplastic-related health effects in preclinical and potentially human studies.