Abstract
Recently, there has been much work devoted to developing accurate and efficient algorithms for image reconstruction in helical, cone-beam computed tomography (CT). Little attention, however, has been directed to the effect of physical factors on helical, cone-beam CT image reconstruction. This work investigates the effect of polychromatic x-rays on image reconstruction in helical, cone-beam computed tomography. A pre-reconstruction dual-energy technique is developed to reduce beam-hardening artefacts and enhance contrast in soft tissue.
Publication types
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Comparative Study
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Evaluation Study
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Research Support, U.S. Gov't, P.H.S.
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Validation Study
MeSH terms
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Algorithms*
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Artifacts
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Head / diagnostic imaging
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Humans
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Imaging, Three-Dimensional / methods*
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Information Storage and Retrieval / methods*
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Numerical Analysis, Computer-Assisted
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Phantoms, Imaging
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Radiographic Image Enhancement / methods
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Radiographic Image Interpretation, Computer-Assisted / methods*
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Radiography, Dual-Energy Scanned Projection / instrumentation
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Radiography, Dual-Energy Scanned Projection / methods*
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Reproducibility of Results
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Scattering, Radiation
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Sensitivity and Specificity
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Signal Processing, Computer-Assisted
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Tomography, Spiral Computed / instrumentation
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Tomography, Spiral Computed / methods*
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X-Rays