Ultra High-Speed Reconstruction Processors for X-Ray Computed Tomography of the Heart and Circulation
Present commercial x-ray computed tomography (CT) scanners are capable of producing single cross section images of the head, thorax, or abdomen which exhibit both high spatial and halftone resolution as described by Brooks and DiChiro (1976). However, the operational flexibility of these devices is restricted by their inability to record sufficient x-ray transmission data to reconstruct more than a single 5–15mm thick cross section of tissue during one scan and the relatively long duration (2–60s) for each scan. This renders such systems incapable of “freezing” the motion of rapidly moving structures, e.g., the beating heart and breathing lungs. Thus, the single cross sections generated in this manner cannot provide clinical diagnostic or biomedical research data concerning the true anatomic shape and dynamic changes in the structural dimensions of several important organ systems.
KeywordsStatic Random Access Memory Oblique Section Single Cross Section General Purpose Computer Fast Fourier Transform Processor
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