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Abstract #3642

Improving SNR and Spatial Coverage for 7T DTI of Human Brain Tumor Using B1 Mapping and Multiband Acquisition

Douglas A.C. Kelley1, Suchandrima Banerjee2, Wei Bian3, Julia P. Owen4, Christopher P. Hess4, Sarah J. Nelson4

1Applied Science Laboratory, GE Healthcare, Corte Madera, CA, United States; 2Applied Science Laboratory, GE Healthcare, Menlo Park, CA, United States; 3Radiology, UC San Francisco, San Francisco, CA, United States; 4Radiology, UCSF, San Francisco, CA, United States

While 7T provides significant improvements in image quality for many techniques for characterizing human brain tumors, diffusion is generally of poorer quality due to the effects of B0 and B1 inhomogeneity, generally requiring a 3T study as well. Advances in parallel imaging, multiband excitation, and B1 mapping have allowed significant improvements leading to diffusion images of comparable quality to 3T without requiring specialized gradient systems. Data from a representative patient are presented and compared to 3T.