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Abstract #1046

Exploring various radial trajectories for optimal relative phase correction in dual-echo subtraction ZTE MRI

Hyo Min Lee1, Markus Weiger1, and Klaas Paul Pruessmann1

1Institute for Biomedical Engineering, University and ETH Zürich, Zürich, Switzerland

In dual-echo subtraction ZTE MRI, it is crucial to correct for gradient delays and phase offsets induced by eddy currents for high image quality. Relative phase correction is a data-driven approach to correct for the gradient hardware imperfection, but it requires that phase offsets induced by eddy current in positive and negative projections to be exact opposite of each other. This work has explored various radial trajectories to satisfy this condition in order to achieve optimal correction for gradient hardware imperfection in dual-echo subtraction ZTE MRI.

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