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Scanning, non-contact, hybrid broadband diffuse optical spectroscopy and diffuse correlation spectroscopy system.

Johannes D Johansson1, Miguel Mireles1, Jordi Morales-Dalmau1

  • 1ICFO-Institut de Ciències Fotòniques, The Barcelona Institute of Sciences and Technology, 08860, Castelldefels (Barcelona), Spain.

Biomedical Optics Express
|March 16, 2016
PubMed
Summary
This summary is machine-generated.

A novel non-contact hybrid imaging system combining diffuse optical spectroscopy (ncDOS) and diffuse correlation spectroscopy (ncDCS) offers advanced small animal imaging. This technology provides detailed spectral and blood flow information for biomedical research.

Keywords:
(170.0110) Imaging systems(170.0170) Medical optics and biotechnology

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Area of Science:

  • Biomedical Engineering
  • Optical Imaging
  • Spectroscopy

Background:

  • Accurate small animal imaging is crucial for preclinical research.
  • Non-contact methods reduce sample stress and contamination risk.
  • Hybrid techniques offer complementary physiological information.

Purpose of the Study:

  • To present a novel scanning system for small animal imaging.
  • To integrate non-contact broadband diffuse optical spectroscopy (ncDOS) and diffuse correlation spectroscopy (ncDCS).
  • To validate the system's performance in phantom and in vivo studies.

Main Methods:

  • Utilized a two-dimensional spectrophotometer for broadband (610-900 nm) spectral retrieval.
  • Employed diffuse correlation spectroscopy (ncDCS) with four source-detector pairs for blood flow data.
  • Scanned samples in two dimensions while tracking height variations.
  • Validated with liquid phantoms and in vivo studies.

Main Results:

  • Successfully retrieved broadband spectral information from multiple source-detector distances.
  • Simultaneously acquired ncDCS data for blood flow measurements.
  • Demonstrated in vivo imaging on a human fingertip during occlusion and on mice with tumors.

Conclusions:

  • The developed non-contact hybrid system enables advanced small animal imaging.
  • The system provides valuable spectral and blood flow data for preclinical research.
  • Validation confirms the system's utility for diverse biological applications.