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Abstract #0651

(2+1)D-CAIPIRINHA Accelerated FID Based MRSI of the Brain at 7T

Bernhard Strasser 1 , Gilbert Hangel 1 , Marek Chmelk 1 , Siegfried Trattnig 1 , Stephan Gruber 1 , Michal Povaan 1 , and Wolfgang Bogner 1

1 High Field MR Centre, Department of Biomedical Imaging und Image-guided Therapy, Medical University of Vienna, Vienna, Vienna, Austria

In this work the parallel imaging methods slice-Caipirinha and 2D-Caipirinha were combined to (2+1)D-Caipirinha in order to simulate an acceleration of two-slice Hadamard encoded MRSI data of the brain at 7T. The proposed method was compared to standard in-plane acceleration and a reconstruction using 2D-GRAPPA. (2+1)D-Caipirinha was shown to be superior over the standard 2D-GRAPPA acceleration. The original 60 minutes scan could have been reduced with an acceleration factor of 8.7 to clinically relevant scan times of 7 minutes, while still providing enough SNR to quantify tNAA, tCho and tCr.

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