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Abstract #1215

A totally balanced spin lock preparation module for accurate and artifact-free T1ρ-mapping

Maximilian Gram1,2, Daniel Gensler1,3, Anton Xu2,3, Peter Nordbeck1,3, Wolfgang Rudolf Bauer1,3, Peter Michael Jakob2, and Michael Seethaler2,3

1Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany, 2Experimental Physics V, University of Würzburg, Würzburg, Germany, 3Comprehensive Heart Failure Center (CHFC), University Hospital Würzburg, Würzburg, Germany

To date, one of the main challenges of accurate and artifact-free T1ρ-mapping is the sensitivity of the required spin lock preparation module against field imperfections. Already established methods are sensitive to B0 and B1 field inhomogeneities. In this work, we present a novel spin lock preparation module that aims to be totally balanced, meaning that every pulse is being compensated by a correspondent pulse with opposite phase. Our new method proves to be highly robust to both types of field inhomogeneities. The superiority over common methods is demonstrated by Bloch simulations and measurements of a glucose phantom at 7.0T.

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