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Imaging brain structure and function, infection and gene expression in the body using light

D A Benaron1, P R Contag, C H Contag

  • 1Medical Free Electron Laser Program, Hansen Experimental Physics Laboratory (HEPL), Department of Physics, Stanford University, CA 94034, USA.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|June 29, 1997
PubMed
Summary

Light-based methods probe human tissues. One method uses external light for spectroscopy, imaging brain function and hemorrhages. The other generates internal light for real-time, non-invasive monitoring and imaging.

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Area of Science:

  • Biomedical Optics
  • Medical Imaging
  • Spectroscopy

Background:

  • Light interaction with human tissues offers unique diagnostic and monitoring capabilities.
  • Two primary approaches exist: external light emission and internal light generation within tissues.

Purpose of the Study:

  • To explore and present recent advancements in light-based techniques for probing human tissue function and structure.
  • To discuss the applications and potential of both externally emitted and internally generated light methods.

Main Methods:

  • Externally emitting light and measuring transmission for tissue characterization (spectroscopy).
  • Internally generating light within tissue and using radiated light as a quantitative beacon (similar to PET).

Main Results:

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  • Spectroscopy enabled imaging of neonatal intracranial hemorrhage and adult brain functions.
  • Internal light generation allowed real-time, non-invasive in vivo imaging of infection and gene expression using standard cameras.

Conclusions:

  • Both externally emitted and internally generated light techniques show significant promise for diverse biomedical applications.
  • These light-based methods offer non-invasive, real-time insights into tissue function, disease, and biological processes.