Data-driven Nyquist ghost correction for hyperpolarized 13C EPSI and EPI

Abubakr Eldirdiri, Stefan Posse, Lars G. Hanson, Andreas Clemmensen, Adam E. Hansen, Jan Henrik Ardenkjær-Larsen, Charles H. Cunningham

Research output: Contribution to conferenceConference abstract for conferenceResearchpeer-review


Echo-planar readout is often used in hyperpolarized imaging because of its rapid sampling of the k-space. This scheme, however, suffers from Nyquist ghosting artifacts. We present a data-driven approach to correct Nyquist ghosting in hyperpolarized C-EPSI and EPI . The method exploits the sparsity of the spectra in hyperpolarized C imaging spectroscopy, and estimates the phase discrepancies from the odd and even data in C-EPSI. The method was demonstrated in phantoms and in vivo. We show that it performs better than the H reference-based reconstruction, and it eliminates the need for reference scans, which may be an unnecessary source of error
Original languageEnglish
Publication date2019
Publication statusPublished - 2019
EventISMRM 27th Annual Meeting & Exhibition - Palais des congrès de Montréal, Montréal, Canada
Duration: 11 May 201916 May 2019
Conference number: 27


ConferenceISMRM 27th Annual Meeting & Exhibition
LocationPalais des congrès de Montréal
Internet address


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