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New fluorescence imaging probe with high spatial resolution for in vivo applications
V Bonnans1, T Gharbi, C Pieralli
1Université de Franche-Comté, Laboratoire d'Optique P.M. Duffieux, UMR CNRS 6603, Institut des Microtechniques des Microtechniques de Franche-Comte, Faculté des Sciences et des Techniques, Route de Gray, 25030 Besançon Cedex, France.
Journal of Biomedical Optics
|September 28, 2004
Summary
A novel fiberized fluorescence imaging probe uses gradient index lenses to focus excitation light and collect red fluorescence signals. This high-resolution imaging device offers potential for diverse biological and medical applications.
Area of Science:
- Biomedical Optics
- Microscopy
- Fiber Optics
Background:
- Fluorescence imaging is crucial for biological and medical research.
- Existing imaging techniques face limitations in resolution, portability, or application scope.
- Development of advanced imaging probes is essential for in-situ analysis.
Purpose of the Study:
- To present a new fiberized fluorescence imaging probe.
- To demonstrate its capability for high-resolution imaging of biological samples.
- To highlight its potential for various biomedical applications.
Main Methods:
- Utilizing gradient index (GRIN) lenses to exploit chromatic aberrations.
- Focusing blue or near-UV excitation light onto the sample surface.
- Efficiently collecting red fluorescence signals using dedicated collecting fibers.
- Employing a single-mode excitation fiber for high spatial resolution (5 microm).
Main Results:
- Achieved a spatial resolution of 5 micrometers over a scanning area of several square millimeters.
- Successfully acquired experimental fluorescence images of self-fabricated fluorescent microsamples.
- Demonstrated imaging of biological tissues, specifically analyzing views of leaves.
- Confirmed the probe's adaptability for spectroscopic investigations.
Conclusions:
- The developed fiberized fluorescence imaging probe offers a novel approach for high-resolution imaging.
- Its design enables efficient excitation and signal collection, suitable for biological and medical fields.
- The probe's versatility extends to spectroscopic analysis, broadening its potential applications.