Abstract #1566

On the Relationship Between Field Strength and Permittivity for Desired Effects of High-Permittivity Materials in MRI

Christopher M Collins¹, Giuseppe Carluccio¹, Bei Zhang¹, Gregor Adriany², Kamil Ugurbil², and Riccardo Lattanzi¹

¹Radiology, New York University, New York, NY, United States, ²Radiology, University of Minnesota, Minneapolis, MN, United States

Experience and general understanding dictate that greater relative permittivity is required to produce a similar effect at lower B0 field strengths and B1 frequencies. Here we use some fundamental explanations and preliminary numerical results for improving receive array performance at different field strengths to propose, more specifically, that permittivity should increase approximately with the inverse of the square of the field strength for an expected effect.

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