Abstract #0618

Towards Full-Brain FID-MRSI At 7T With 3D Concentric Circle Readout Trajectories

Lukas Hingerl¹, Bernhard Strasser², Philipp Moser^1,3, Michal Považan^4,5, Gilbert Hangel¹, Eva Heckova¹, Stephan Gruber¹, Siegfried Trattnig^1,3, and Wolfgang Bogner¹

¹High Field MR Centre, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria, ²Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Athinoula A. Martinos Center for Biomedical Imaging, Boston, MA, United States, ³Christian Doppler Laboratory for Clinical Molecular MR Imaging, Vienna, Austria, ⁴The Johns Hopkins University School of Medicine, Russell H. Morgan Department of Radiology and Radiological Science, Baltimore, MD, United States, ⁵Kennedy Krieger Institute, F. M. Kirby Research Center for Functional Brain Imaging, Baltimore, MD, United States

Proton magnetic resonance spectroscopic imaging is a powerful technique for clinical diagnosis; however, low spatial resolutions together with long scan times and SNR-per-time inefficiency prevent its wide spread application. The already proposed 2D-CONCEPT (concentric circle echo planar trajectories) sequence overcomes this issue by capitalizing most efficiently on the hardware constraints of the gradient system. The purpose of this abstract is to present first preliminary results of an extension to 3D-CONCEPT for full-brain 3D-FID-MRSI at 7T for a 64x64x31 matrix acquired within 23 minutes.

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