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Abstract #2815

Investigation of Field Dependence of High Dielectric Insert Properties in Parallel Imaging Arrays

Ye Li1, Daniel Vigneron1, 2, Xiaoliang Zhang1, 2

1Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA, United States; 2UCSF/UC Berkeley Joint Graduate Group in Bioengineering, San Francisco, CA, United States

In this work, we investigated the high dielectric insert performance with different field strength in parallel imaging arrays in terms of sensitivity and transmit efficiency for high field MRI applications. We studied the RF electromagnetic field distribution of an 8-channel array with and without the high dielectric insert at 3T, 4T and 7T. Our results show that, B1 fields increase and electric fields decrease with the use of high dielectric inserts at all 3 field strengths but the high dielectric insert provides more benefits at higher fields.