Qi Duan1, Daniel K. Sodickson1,
Riccardo Lattanzi1, Bei Zhang1, Graham C. Wiggins1
1Center for Biomedical Imaging,
Department of Radiology, NYU School of Medicine, New York, NY, United States
This
abstract presents a novel 7T spine array design for optimizing SNR at the
regions of interest. This design takes into account opportunities for
quadrature excitation and the twisting of B1+ and B1- fields to optimize SNR
within the ROIs. The design parameters were quantitatively optimized via full
wave simulation. The benefits of the proposed design were validated via
actual MR scan with higher SNR within ROI, more efficient excitation, and
less peak local heating than alternative designs. This design can be easily
extended for larger longitudinal coverage, providing a more efficient
excitation and MR images without obvious signal nulls.