Impact of polychromatic x-ray sources on helical, cone-beam computed tomography and dual-energy methods
Emil Y Sidky1, Yu Zou, Xiaochuan Pan
1Department of Radiology MC-2026, University of Chicago, 5841 S Maryland Ave, Chicago, IL 60637, USA.
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.
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