Abstract #0491

Traveling Internal Plane-wave Synthesis for Uniform B1(+) in High Field MRI

Adam W Anderson¹

¹Biomedical Engineering, Vanderbilt University, Nashville, TN, United States

Image quality in high field MRI is limited by B₁ inhomogeneity. This work describes a new approach to improving B₁ homogeneity using parallel transmission. Rather than transmitting a conventional traveling wave, which is diffracted and reflected by the human body, thereby creating a non-uniform internal field, the new method seeks a solution to the inverse problem—what external field produces a traveling plane wave within the body? Simulations suggest dramatic improvements in B1 homogeneity can be obtained given a sufficient number of transmitted field modes.

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