Simultaneous PET-MRI reconstruction with vectorial second order total generalized variation

Florian Knoll, Martin Holler, Thomas Koesters, Kristian Bredies, Daniel K. Sodickson

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    State of the art PET-MR systems are capable of performing both PET and MR measurements simultaneously. However, the resulting data sets are usually processed in two separate reconstruction pipelines. The goal of this work is to complement simultaneous data acquisition with a new multi-modality reconstruction framework based on second order total generalized variation that simultaneously reconstructs both PET and MR images. Information of the underlying anatomy is shared during the image reconstruction process with a dedicated multi-channel regularization functional. Results of numerical simulations and in-vivo data are presented that demonstrate improved PET resolution and reduced noise in MR in comparison to conventional reconstructions.

    Original languageEnglish (US)
    Title of host publication2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781467398626
    DOIs
    StatePublished - Oct 3 2016
    Event2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015 - San Diego, United States
    Duration: Oct 31 2015Nov 7 2015

    Publication series

    Name2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015

    Conference

    Conference2015 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2015
    Country/TerritoryUnited States
    CitySan Diego
    Period10/31/1511/7/15

    Keywords

    • PET-MR
    • iterative image reconstruction
    • multi-modality imaging
    • total generalized variation
    • variational regularization

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics
    • Radiology Nuclear Medicine and imaging
    • Instrumentation

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