Skip to Main content Skip to Navigation
Theses

Methodes Optiques d'exploration des tissus biologiques. Spectrometrie des tissus cerebraux au moyen des sondes miniatures a fibres optiques et imagerie par Tomographie Optique Coherente

Abstract : We present in this thesis two optical methods of biological media investigation. First, we present an investigation invasive technique of the deep cerebral tissues. This technique using small optical probes is based on the strong light backscattering by the biological tissues. Thus, the measured light attenuation contains information on scattering properties of the medium but also on chromophores' concentrations. As a result, it seems possible to envisage a method of direct observation of some physiological parameters as the tissue oxygen saturation or hemoglobine concentration. Second, we present an imaging technique of the biological tissues, particulary used for eye imaging: the optical coherence tomography. This technique is based on the coherence properties of the light. Thus, the interfernce of the light from the two arms of a Michaelson interferometer give a signal containing informations on the reflectivity of a spatial domain of the target limited by the coherence lenght of the light source. Using this approach we built and characterised a fast OCT system using a resonant scanner.
Complete list of metadatas

Cited literature [76 references]  Display  Hide  Download

https://tel.archives-ouvertes.fr/tel-00007180
Contributor : Adrian Bradu <>
Submitted on : Friday, October 22, 2004 - 12:30:51 PM
Last modification on : Tuesday, September 11, 2018 - 11:00:02 AM
Long-term archiving on: : Friday, April 2, 2010 - 9:06:40 PM

Identifiers

  • HAL Id : tel-00007180, version 1

Collections

UJF | LIPHY | UGA | CNRS

Citation

Adrian Bradu. Methodes Optiques d'exploration des tissus biologiques. Spectrometrie des tissus cerebraux au moyen des sondes miniatures a fibres optiques et imagerie par Tomographie Optique Coherente. Biophysique [physics.bio-ph]. Université Joseph-Fourier - Grenoble I, 2004. Français. ⟨tel-00007180⟩

Share

Metrics

Record views

325

Files downloads

3115