Spectroscopic laser computed tomography of human teeth using coherent detection imaging method

摘要

The coherent detection imaging method based on the optical heterodyne detection technique is used to obtain laser computed tomographic images of human teeth in the visible and near-IR regions. The internal structure of teeth can be clearlydifferentiated at different wavelengths. The image contrast is shown to be wavelength dependent. The laser CT images of a tooth with fluids in the pulp chamber and pathological condition also confirm wavelength dependent difference in structure andcontrast.