Improved reconstruction for IDEAL spiral CSI

Rie Beck Hansen, Christian Mariager, Christoffer Laustsen, Rolf F. Schulte, Jan Henrik Ardenkjær-Larsen, Lars G. Hanson

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    In this study we demonstrate how reconstruction for IDEAL spiral CSI (spectroscopic imaging scheme developed for hyperpolarized dynamic metabolic MR imaging) can be improved by using regularization with a sparsity constraint. By exploiting sparsity of the spectral domain, IDEAL spiral CSI can achieve chemical shift encoding by acquisition of only few time-shifted echoes. The minimum number of echoes required to avoid noise amplification can be decreased by means of regularization enforcing spectral sparsity, hereby reducing scan time. Improvements achieved by using regularized reconstruction are demonstrated for in vivo data from a hyperpolarized cardiac study of a pig.
    Original languageEnglish
    Publication date2017
    Number of pages2
    Publication statusPublished - 2017
    Event ISMRM 25th Annual Meeting & Exhibition - Hawai'i Convention Center, Honolulu, United States
    Duration: 22 Apr 201727 Apr 2017


    Conference ISMRM 25th Annual Meeting & Exhibition
    LocationHawai'i Convention Center
    Country/TerritoryUnited States


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