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Abstract #2700

Optimal Choice of Echo Times for Gradient Echo B0 Field Mapping

Yasmin Geiger1 and Assaf Assaf Tal1

1Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel

Field maps are essential in spectroscopy, shimming, MR thermometry and geometric distortion correction. Minimizing the noise in acquired field maps is therefore potentially important to all of these applications. When using a multi-gradient echo, the choice of echo times has a marked effect on the noise on the acquired field maps. Here, we derive the optimal echo times which minimize the amount of noise in the resulting field maps.

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