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Abstract #0261

High Resolution Phase Gradient Mapping as a Tool for the Detection and Analysis of Local Field Disturbances

Hendrik de Leeuw1, Peter Roland Seevinck1, Gerrit Hendrik van de Maat1, Chris J.G. Bakker1

1Image Sciences Institute, University Medical Center Utrecht, Utrecht, Netherlands

We have demonstrated a post processing technique -phase gradient mapping- that enables us to generate positive contrast of magnetically labeled substances. It furthermore can be used as a tool for the detection and analysis of local field inhomogeneities. The technique can be applied without loss of resolution, does not need phase unwrapping and allows simple error estimations. Phase gradient mapping provides quantitative values and may be expected to find application in many areas, e.g., in studies concerned with the quantification or characterization of field distortions due to contrast agents