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Abstract #4542

Field Map Measurements Using a TrueFISP Sequence

Sven Zuehlsdorff1, Peter J. Weale1, Saurabh Shah1, Andreas Greiser2, Renate Jerecic1

1Siemens Medical Solutions USA, Inc., Chicago, Il, USA; 2Siemens AG Healthcare Sector, Erlangen, Germany

A homogeneous static magnetic field (B0) is essential for many clinical applications requiring TrueFISP imaging. Typically, 3D gradient echo (GRE) sequences are used estimate the B0-field inhomogeneity. However, these approaches are typically susceptible to motion (such as cardiac or respiratory motion) and flow. In this study, the spectral response function of a 2D TrueFISP sequence was utilized to estimate deviations of the B0-field. Field maps of different body regions such as brain and heart have been obtained.