Laminar optical tomography: demonstration of millimeter-scale depth-resolved imaging in turbid media

Abstract

Laminar optical tomography (LOT) is a new technique that combines the advantages of diffuse optical tomography image reconstruction and a microscopy-based setup to allow noncontact imaging with $100–200‐\mathit{\mu }\mathrm{m}$ resolution effective over depths of 0–2.5 mm. LOT is being developed primarily for multispectral imaging of rat cortex, for which resolving functional dynamics in various layers of the brain’s cortex (to depths of $1500 \mathit{\mu }\mathrm{m}$) is of increasing interest to neurophysiologists. System design and image reconstruction techniques are described, along with simulation and phantom results that demonstrate the characteristics and limitations of system accuracy and resolution.

© 2004 Optical Society of America

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