Abstract #0029

A Novel Method for Background Field Removal in Abdominal QSM

Debra E. Horng^1,2, Samir D. Sharma¹, Scott B. Reeder^1,2,3,4,5, and Diego Hernando¹

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

We introduce a QSM background field removal method based on harmonic function theory. Methods based on the mean value theorem compute the value at the center of a spherical kernel. Conversely, a new method based on the extended Poisson kernel can compute the value at any location in a spherical kernel. The new kernel is evaluated for accuracy near air/tissue interfaces, resulting in low errors compared to existing methods. Our new method is fast (analytic) and is designed for performance near air/tissue interfaces in abdominal QSM.

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