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Abstract #3048

T1 mapping of the ISMRM/NIST system phantom at 7T.

Rosa Sanchez Panchuelo1, Olivier Mougin1, Robert Turner1,2, and Susan Francis1,3
1Sir Peter Mansfield Imaging Centre, UP, University of Nottingham, Nottingham, United Kingdom, 2Max Planck Institute for Human Cognitive and Brain Sciences, Leibzig, Germany, 3NIHR Nottingham Biomedical Research, University of Nottingham, Nottingham, United Kingdom

We report the quantitative T1 values of the NIST/ISMRM system phantom T1 and T2 spheres at 7T. We compare the accuracy and repeatability of T1 measurements using a 2D multi-slice multi-shot IR-EPI sequence, to 3D MP2RAGE and standard single-slice IR sequences at 3 and 7 T. We show that T1 measurements are more accurate using MS-IR-EPI compared to MP2RAGE. The T2-spheres of the NIST/ISMRM system phantom are shown to be best suited for T1-mapping at 7T as they offer a wider range of T1-values, better matched than those of the T1-spheres to those found within the human brain.

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