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Abstract #5521

Density Weighted Concentric Circle Trajectories for Brain MRSI at 7T

Lukas Hingerl1, Bernhard Strasser1, Philipp Moser1, Gilbert Hangel1, Siegfried Trattnig1,2, and Wolfgang Bogner1

1High Field MR Centre, Medical University of Vienna, Vienna, Austria, 2Christian Doppler Laboratory for Clinical Molecular MR Imaging, Medical University of Vienna, Vienna, Austria

A density weighted concentrically circular echo-planar trajectories readout scheme is presented for brain MRSI at 7 T. We give an analytic solution for the variable radii distribution in order to intrinsically measure a Hamming weighted k-space. A comparison with post acquisition filtered equidistant concentric circles is done. Invivo metabolic maps and spectra are shown.

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