Abstract #3728
3D metabolic mapping in the brain by 2D-GRAPPA accelerated FID-CSI at 7T
Gilbert Hangel 1 , Bernhard Strasser 1 , Michal Povaan 1 , Stephan Gruber 1 , Marek Chmelik 1 , Siegfried Trattnig 1 , and Wolfgang Bogner 1
1
High Field MR Centre, Department of
Biomedical Imaging and Image-guided Therapy, Medical
University of Vienna, Vienna, Vienna, Austria
This work presents high resolution metabolic maps of the
brain at 7T acquired in four slices, using
pulse-cascaded Hadamard Spectroscopic Imaging (HSI) and
2D-GRAPPA acceleration. HSI increases SNR compared to
multi-slice acquisition, overcomes point-spread function
problems and enables the measurement of few slices with
high in-plane resolution (6464) while short acquisition
delays maximize SNR and avoids J-coupling effects. In
plane GRAPPA acceleration by a factor of 6 (i.e., 3x2)
allows a measurement time of 20 min while retaining
enough SNR for metabolite quantification. Volunteer
measurements show good comparability to the
corresponding anatomical images.
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