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Abstract #0328

MR-Encephalography Using a Spherical Stack of Spirals Trajectory

MAGNA25Jakob Asslnder1, Marco Reisert1, Benjamin Zahneisen1, Thimo Hugger1, Jrgen Hennig1

1Dep. of Radiology, Medical Physics, University Medical Center, Freiburg, Baden-Wrttemberg, Germany

A spherical stack of spirals trajectory for fast single shot 3D-imaging is presented. Contrary to a shell trajectory, in a stack of spirals trajectory off-resonance leads to distortions rather than blurring and signal dropout. Latter one is hard or impossible to correct for. It is shown, that the off-resonance behavior strongly depends on the direction of the acquisition. Furthermore the stack of spirals easily allows a reduction of the FOV in z-direction to save acquisition time. This can be used to increase the resolution.