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Abstract #1622

Joint Field Map and Metabolite Image Reconstruction Framework for Hyperpolarized 13 C Spiral CSI

Ulrich Koellisch 1,2 , Rolf F. Schulte 2 , Markus Durst 1,2 , Axel Haase 1 , and Florian Wiesinger 2

1 IMETUM, Technical University Mnchen, Munich, Germany, 2 GE Global Research, Munich, Germany

An algorithm for IDEAL spiral CSI reconstruction of hyperpolarized 13C metabolites is presented. It calculates field maps or CS frequencies and metabolite images with a joint estimation approach. The field maps gets estimated by a set of polynomials. The estimation of the CS-frequencies decreases the number of necessary excitations, because no extra spectra have to be recorded. The application of the off-resonance correction on in-vivo datasets has shown, that this approach increases the image quality due to a reduced amount of blurring in the metabolite maps.

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