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Abstract #0564

Low-Resolution Spectral Cost Function for Field Map Estimation

Kristin L. Granlund1,2, Bruce L. Daniel1, Brian A. Hargreaves1

1Radiology, Stanford University, Stanford, CA, USA; 2Electrical Engineering, Stanford University, Stanford, CA, USA

Spiral imaging is very sensitive to field inhomogeneity and, therefore, is significantly improved by off-resonance correction. Generating an accurate field map is essential to correcting for B0 field variations. In this work, we use low-resolution spectra to estimate off-resonance, which is then used to perform multi-frequency water/fat separation for spiral breast imaging.