Motion Correction

Motion causes data corruting artifacts within the conventional CPD MRTI processing algorithm used for monitoring a MRgLITT procedure in liver. The shown Maxwell equation based algorithm provides a referenceless approach to motion correction and may be applied to determine the background phase signal and subsequent difference.

Top Right is maxwell correction delta temp. Near time = 50 a well formed temperature (degC) is seen in top right. Bottom Right is conventional CPD delta temp Top Left is cumulative sum of tmap using maxwell correction Bottom Left is original tmap. Significant inaccuracies in the absolute temperature maps are seen to accumulate over the time history in both cases.