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Related Experiment Video

Updated: Mar 14, 2026

Multimodal Imaging and Spectroscopy Fiber-bundle Microendoscopy Platform for Non-invasive, In Vivo Tissue Analysis
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Dual-modality endomicroscopy with co-registered fluorescence and phase contrast.

C Ba1, M Palmiere1, J Ritt1

  • 1Biomedical Engineering Department, Boston University, 44 Cummington Mall, Boston, MA 02215, USA.

Biomedical Optics Express
|October 5, 2016
PubMed
Summary

A new dual-modality endomicroscope combines confocal laser endomicroscopy (CLE) and scanning oblique back-scattering microscopy (sOBM). This innovative tool offers co-registered, complementary imaging for labeled and unlabeled tissue structures.

Keywords:
(120.5050) Phase measurement(170.1790) Confocal microscopy(170.2150) Endoscopic imaging(180.5810) Scanning microscopy

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Area of Science:

  • Biomedical optics
  • Microscopy
  • Medical imaging

Background:

  • Confocal laser endomicroscopy (CLE) provides fluorescence contrast for cellular imaging.
  • Scanning oblique back-scattering microscopy (sOBM) offers label-free phase-gradient contrast.
  • Current endomicroscopy techniques may benefit from complementary contrast mechanisms.

Purpose of the Study:

  • To develop and demonstrate a dual-modality laser scanning endomicroscope.
  • To integrate CLE and sOBM for simultaneous, co-registered imaging.
  • To evaluate the combined system's capability in visualizing tissue structures.

Main Methods:

  • A 2.6mm-diameter micro-objective was coupled to a 30,000-core flexible fiber bundle.
  • The system integrates confocal laser endomicroscopy (CLE) for fluorescence contrast.
  • Simultaneous phase-gradient contrast was achieved using scanning oblique back-scattering microscopy (sOBM).

Main Results:

  • The dual-modality endomicroscope successfully provided simultaneous fluorescence and phase-gradient contrast.
  • The contrasts were inherently co-registered, enabling complementary visualization.
  • Proof-of-principle demonstrations were performed on ex-vivo mouse colon tissue.

Conclusions:

  • The developed dual-modality endomicroscope offers a novel approach for enhanced tissue visualization.
  • Simultaneous CLE and sOBM provide complementary information on both labeled and unlabeled structures.
  • This technology holds potential for improved diagnostic capabilities in endoscopic procedures.