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Basics of Computed Tomography
Figure 1-3
Figure 1 — CT image versus a conventional radiograph.
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Figure 2 — Schematic illustrations of backprojection.
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Figure 3 — Sketches illustrating the evolution of CT scan geometries, each a distinct generation of instrumentation; (a) first generation single pencil beam translate/rotate scanner; (b) second generation multiple pencil beam translate/rotate scanner; (c) third generation rotate/rotate fan beam scanner; (d) fourth generation rotate/stationary inverted fan beam scanner; (e) fifth generation cone beam cylindrical scanner.
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