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Abstract #2435

An improved method for self-gated Cardiac T1 mapping in mice

Patrick Winter 1 , Thomas Kampf 1 , Xavier Helluy 1 , Fabian Tobias Gutjahr 1 , Cord Bastian Meyer 1 , Eberhard Rommel 1 , Wolfgang Rudolf Bauer 2 , Peter Michael Jakob 1 , and Volker Herold 1

1 University of Wrzburg, Wrzburg, Bavaria, Germany, 2 Universittsklinik Wrzburg, Wrzburg, Bavaria, Germany

A new workflow was developed for the extraction of a radial self-gating signal in mice from an Inversion Recovery Snapshot FLASH sequence. The new method almost completely removes the T1 relaxation background and the phase shift caused by the inversion of blood magnetization at the zero-crossing point. A comparison of the self-gating signal with an additional monitored ECG signal showed small deviations for the trigger points extracted from the radial data even at the beginning of the inversion. Both the k-space signal and the reference were used for retrospective global and slice-selective T1 mapping and yield matching T1 values.

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