A Prototype Digital Tomographic X-Ray System For Dental Applications

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Abstract
This report describes a prototype dental x-ray machine designed to eliminate shortcomings of conventional dental radiographic methods by using multiple image sampling techniques, electronic x-ray detection, and computer image processing. A miniaturized intraoral x-ray tube is used having an enlarged target on which multiple focal spots can be excited sequentially under computer control. The detector is a video-based image intensifier yielding a sequence of projections which are stored digitally in real time. Suitable processing of these images permits synthesis of tomographic slices. Specific projections obtained at different examinations can be matched so that subsequent subtraction demonstrates diagnostically important changes.© (1984) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

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