Abstract
An optical tomography system is developed for generating three-dimensional reconstructions of thick objects from projections. The system is useful for studying transparent structures that are 1–10 mm in diameter. Evaluation of the reconstruction system with a test object demonstrates 98% geometric accuracy, 90% accuracy in the detection of boundaries, and 90% accuracy in the measurement of absorbance. Reconstructions are computed from 96 parallel projections spaced evenly within 180°. Accurate alignment of the projections is achieved with a cross-correlation method following data acquisition. Application of the optical tomography reconstruction technique to an intact cochlea permits measurement of internal structures with 16-μm pixels and a diffraction-limited resolution of 24 μm.
© 1992 Optical Society of America
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