Abstract

Various time gating techniques are proving to be useful for imaging structures embedded in turbid media such as biological tissue.[1] The turbid material scatters the input pulse and stretches it in time, but a time gate applied to the earliest transmitted light isolates the unscattered and minimally scattered light, allowing an image to be extracted. Much of the work of this type is done with a phantom scatterer made with single sized polystyrene spheres or nondairy creamer. Non-dairy creamer with methyl cellulose, in particular, has been used as a model for biological tissue.

© 1992 IQEC