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Abstract #5647

Linear B1-Dependent Correction of Quantitative in vivo T2 Maps Acquired with Fast Spin Echo Techniques

Ulrike Nöth1, Manoj Shrestha1, Jan-Rüdiger Schüre2, and Ralf Deichmann1

1Brain Imaging Center (BIC), Goethe University, Frankfurt/Main, Germany, 2Department of Neuroradiology, Goethe University, Frankfurt/Main, Germany

A method is proposed for correcting the effects of stimulated echoes in T2 mapping based on fast spin echo sequences. In contrast to existing techniques, the proposed method does not require a priori knowledge of the radio frequency pulse profiles. A linear relationship between uncorrected apparent T2 (T2app) and corrected T2 values with B1-dependent regression parameters was found which facilitates the conversion of T2app into T2 maps. In vivo results show that corrected T2 values correspond closely to reference values and have an improved consistency across protocols.

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