Recent Patents in Dual-Energy CT with Applications in Orthopedics

ISSN: 1877-6132 (Online)
ISSN: 2210-6847 (Print)

Volume 5, 2 Issues, 2015

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Recent Patents on Medical Imaging

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Charles Bellows
Chief Division of General Surgery
University of New Mexico
New Mexico

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Recent Patents in Dual-Energy CT with Applications in Orthopedics

Recent Patents on Medical Imaging, 3(2): 92-102.

Author(s): Baojun Li.

Affiliation: Department of Radiology, Boston University School of Medicine, Boston, USA.


The metal artifacts obscure or mimic pathologies and thus severely limit the diagnostic value of CT imaging in orthopedic applications. The fundamental root cause is the beam hardening effect due to the polychromatic x-ray beam. Recent patents introduce a dual-energy CT with fast-kVp switching technique that allows synthetic monochromatic energy images to be generated through material decomposition. These monochromatic energy images are not only free of metal artifacts, but also available at a broad energy range for optimal contrast at bone-tissue interface. This article summarizes the principle of this advanced CT technology with emphasis in its capability in suppressing metal implantinduced CT artifacts.


CT, dual energy, fast-kVp switching, metal artifacts.

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Article Details

Volume: 3
Issue Number: 2
First Page: 92
Last Page: 102
Page Count: 11
DOI: 10.2174/2210684703666131211003250

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