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Abstract #0669

Robust Coil Combination for bSSFP Elliptical Signal Model

Nicholas McKibben1,2, Grayson Tarbox3, Edward V. DiBella1,2, and Neal K. Bangerter4
1Biomedical Engineering, University of Utah, Salt Lake City, UT, United States, 2Radiology and Imaging Sciences, University of Utah, Salt Lake City, UT, United States, 3Electrical and Computer Engineering, Brigham Young University, Provo, UT, United States, 4Bioengineering, Imperial College London, London, United Kingdom

Elliptical parametric models of the bSSFP signal equation are used to derive band-free images given multiple phase-cycled images. For large multicoil datasets, we desire coil combination before debanding to significantly reduce computational burden. Conventional coil combination methods fail as nonlinear mappings lead to distortions of the elliptical representation. We propose phase-substitutions that can be applied with any coil combination method including sum-of-squares and which allow coil combination before computationally expensive debanding operations.

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