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Abstract #1831

A Self-Reference MR Thermometry Method Utilizing the Phase Gradient

Jason A. Langley1,2, Qun Zhao1,2

1Department of Physics and Astronomy, The University of Georgia, Athens, GA, United States; 2Bioimaging Research Center (BIRC), The University of Georgia, Athens, GA, United States

A modified self-reference MR thermometry method is presented in this abstract. We circumvent the phase unwrapping procedure in the self-reference MR thermometry procedure by utilizing the phase gradient to estimate the baseline phase map. In the method proposed in this abstract, the phase map is modeled as a 2D polynomial. The components of the gradient of the model are then fitted to the components of the phase gradient using 2D weighted least squares. The proposed procedure is evaluated using two simulated MR thermometry data sets.