MR-Encephalography Using a Spherical Stack of Spirals Trajectory

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

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.