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Two-dimensional time-resolved direct imaging through thick biological tissues: a new step toward noninvasive medical imaging

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Abstract

We report an original two-dimensional time-resolved direct imaging method for transillumination optical tomography that combines the time-gating and forward phase-conjugation properties of type II degenerate parametric amplification. An object with subcentimeter resolution embedded in 4-cm-thick chicken breast tissue was imaged with a signal-to-noise ratio of 2.

© 1999 Optical Society of America

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