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Abstract #2481

In vivo echo-planar spectroscopic imaging (EPSI) at 7 tesla with readout segmentation for improved spectral bandwidth

Graeme A. Keith1, Marco Vicari2, Rosemary A. Woodward3, and David A. Porter1

1Imaging Centre of Excellence, University of Glasgow, Glasgow, Scotland, 2Fraunhofer MEVIS, Bremen, Germany, 3Glasgow Clinical Research Imaging Facility, NHS Greater Glasgow and Clyde, Glasgow, Scotland

The use of echo-planar spectroscopic imaging at ultra-high field strengths is attractive due to its suitability for high spatial and spectral resolution (HiSS) acquisitions. The drawback of the method at 7T and above is the decreasing spectral bandwidth as field strength increases. This work seeks to decouple the spectral bandwidth from the spatial resolution by the use of readout segmentation to achieve shorter echo spacing. Readout segmented EPSI spectra collected in vivo at 7T and comparable to a standard SVS method are presented. This allowed the calculation of metabolite maps for NAA, creatine and choline.

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