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  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper CMF7

Real-time infrared imaging through turbid media by using photorefractive holography

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Abstract

Optical imaging through biological tissue may provide a safe, real-time diagnostic tool for medical applications. Infrared radiation in the transmission window ~650–1000 nm is not strongly attenuated, and differential-absorption measurements can provide information concerning physiological functions (e.g., blood oxygenation). Unfortunately, the strong scattering of most tissue types (typically MFP ~ 100 μm) precludes conventional imaging techniques through even 1 mm of tissue. Confocal scanning can discriminate against scattered light to improve images (e.g., Ref. 1) but the integration times required for each pixel imply a long image acquisition time if reasonable spatial resolution is to be maintained.

© 1995 Optical Society of America

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