Abstract #5188

Water and fat separation using a Gauss-Newton Trust-Region based algorithm

Carlos Sing-Long^1,2, Cristobal Arrieta^3,4, Curtis N Wiens⁵, Diego Hernando^5,6, and Sergio Uribe^4,7

¹Institute for Biological and Medical Engineering, Schools of Engineering, Medicine and Biological Sciences, Pontificia Universidad Catolica de Chile, Santiago, Chile, ²Biomedical Imaging Center, Pontificia Universidad Catolica de Chile, ³Electrical Engeneering Department, Pontificia Universidad Catolica de Chile, Santiago, Chile, ⁴Biomedical Imaging Center, Pontificia Universidad Catolica de Chile, Santiago, Chile, ⁵Radiology, University of Wisconsin, Madison, WI, United States, ⁶Medical Physics, University of Wisconsin, Madison, WI, United States, ⁷Radiology Department, School of Medicine, Pontificia Universidad Catolica de Chile, Santiago, Chile

We propose an algorithm based on a Gauss-Newton Trust-Region algorithm that estimates the field map and water and fat concentrations in two steps for all pixels at once. The results are comparable to those obtained with the state-of-art methods.

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