Abstract #1874

Novel correction method of reception radiofrequency field inhomogeneities for noise corrupted sodium MR images at 3 T using Ensemble Empirical Mode Decomposition

Nadia Karina Paschke¹, Andreas Neubauer¹, and Lothar R Schad¹

¹Computer Assisted Clinical Medicine, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany

Sodium MRI suffers from low signal-to-noise ratio, which can be compensated by applying surface coils fitting the geometry of interest. Inhomogeneous coil profiles hinder absolute quantification of in vivo tissue sodium concentration, which is crucial for clinical assessment of pathological changes. Adequate corrections of intensity inhomogeneities of reception radiofrequency fields are essential and most standard proton imaging correction methods require manual thresholding. We present a novel and automatic correction approach by postprocessing images with Ensemble Empirical Mode Decomposition without additional scan time. It reduces signal variations by 39%. This is shown in phantoms and in vivo.

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