• Login
    View Item 
    •   SMARTech Home
    • Georgia Tech Theses and Dissertations
    • Georgia Tech Theses and Dissertations
    • View Item
    •   SMARTech Home
    • Georgia Tech Theses and Dissertations
    • Georgia Tech Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Noise suppression for spectral CT imaging

    Thumbnail
    View/Open
    HARMS-THESIS-2015.pdf (1.829Mb)
    Date
    2015-12-04
    Author
    Harms, Joseph
    Metadata
    Show full item record
    Abstract
    Dual-Energy CT (DECT) expands clinical applications of CT imaging by its capability to decompose CT images into different material images. However, decomposition leads to large noise amplification and limits the quantitative use of DECT. Additionally, current dual-energy CT scanner designs induce additional image noise problems. Because of these two factors, noise suppression methods have been actively pursued since the inception of DECT. The focus of this research is improvement of a previously developed noise suppression algorithm via penalized weighted least-squares with edge preserving regularization. The method performance is enhanced by pixel similarity-based regularization, which substantially enhances the quality of decomposed images by retaining a more uniformly distributed noise power spectrum.
    URI
    http://hdl.handle.net/1853/56230
    Collections
    • Georgia Tech Theses and Dissertations [23877]
    • School of Mechanical Engineering Theses and Dissertations [4086]

    Browse

    All of SMARTechCommunities & CollectionsDatesAuthorsTitlesSubjectsTypesThis CollectionDatesAuthorsTitlesSubjectsTypes

    My SMARTech

    Login

    Statistics

    View Usage StatisticsView Google Analytics Statistics
    facebook instagram twitter youtube
    • My Account
    • Contact us
    • Directory
    • Campus Map
    • Support/Give
    • Library Accessibility
      • About SMARTech
      • SMARTech Terms of Use
    Georgia Tech Library266 4th Street NW, Atlanta, GA 30332
    404.894.4500
    • Emergency Information
    • Legal and Privacy Information
    • Human Trafficking Notice
    • Accessibility
    • Accountability
    • Accreditation
    • Employment
    © 2020 Georgia Institute of Technology