Abstract #2402

Utilization of a BSSFP Signal Model for Improved Fat/Water Decomposition in BSSFP Breast Imaging

Leah C. Henze Bancroft¹, Diego Hernando², Kevin M. Johnson³, Frederick Kelcz⁴, Roberta Strigel⁴, Walter F. Block,³⁵

¹Biomedical Engineering, University of Wisconsin - Madison, Madison, WI, United States; ²Radiology, University of Wisconsin-Madison, Madison, WI, United States; ³Medical Physics, University of Wisconsin - Madison, Madison, WI, United States; ⁴Radiology, University of Wisconsin - Madison, Madison, WI, United States; ⁵Biomedical Engineering, University of Wisconsin-Madison, Madison, WI, United States

The IDEAL fat/water decomposition algorithm makes use of multipeak fat model that improves decomposition process with Gradient Echo and Spin Echo sequences. However, when a bSSFP sequence is used the resulting signal magnitude and phase responses can differ significantly from the standard multipeak fat signal model. Presented here are previously uncharacterized changes to this model due to bulk phase changes and amplitude modulations that occur with the use of a bSSFP sequence as well as a method for incorporating this model into a fat/water decomposition algorithm.