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Abstract #2585

Does Respiratory Motion Influence Tissue Phase Mapping Velocities?

Jan Paul1, Stefan Wundrak1, Peter Bernhardt1, Wolfgang Rottbauer1, and Volker Rasche1

1Internal Medicine II, University Hospital of Ulm, Ulm, Germany

Cartesian Tissue Phase Mapping (TPM) usually necessitates respiratory navigators or other means of motion selection/correction to avoid ghosting artifacts. In radial MRI, however, motion artifacts result in image blurring rather than ghosting, which might allow using all respiratory states for reconstruction. The aim of this study is to investigate the influence of respiratory motion on velocities obtained from radial Tissue Phase Mapping MRI. Only small biases towards reduced velocity peaks were found in ungated compared to motion-compensated reconstructions. Overall velocity agreement of ungated data was very high compared to gated reconstructions.

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