Abstract #3783

Flip Angle Optimization for Spin-Echo Based Sequences (RARE/TRAPS) for Hyperpolarized Nuclei

Sebastien Bär¹, Matthias Weigel², Dominik von Elverfeldt¹, Jürgen Hennig¹, and Jochen Leupold¹

¹Dept. of Radiology, Medical Physics, University Medical Center Freiburg, Freiburg, Germany, ²Radiological Physics, University of Basel Hospital, Basel, Switzerland, Saint Helena

For applications like dynamic imaging, the relatively fast decaying hyperpolarized signal must be acquired over a higher number of sequence cycles and the optimal refocusing flip angle needs to be determined. Optimizing the RARE refocussing flip angles allow to optimize the signal exploitation. Furthermore, optimizing the flip angles of a RARE-based varying flip-angle TRAPS sequence enables an even longer prolongation of the signal lifetime.

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