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Abstract #1751

Quantitative susceptibility mapping: comparison of reproducibility between 3T and 7T

Pascal Spincemaille1, Julie Anderson2, Gaohong Wu2, Baolian Yang2, Maggie Fung2, Ke Li2, Shaojun Li1, Ilhami Kovanlikaya1, Ajay Gupta1, Doug Kelley, 2, Nissim Benhamo2, and Yi Wang1
1Weill Cornell Medicine, New York, NY, United States, 2General Electrical Healthcare, Waukesha, WI, United States

In this work, we compare the performance of QSM at 7T versus 3T in an intra-scanner test-retest experiment with varying echo numbers and in an image quality analysis. QSM was reproducible within fixed field strength when the same number of echoes were used. Across field strengths and with different numbers of echoes, QSM was reproducible between the 3T acquisition with 10 echoes and the 7T acquisition with 5 echoes. The preliminary data suggest that 7T can be used to shorten QSM acquisition time or enable higher resolution QSM in clinically acceptable scan times.

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