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Abstract #3188

Repeatability and reproducibility of brain quantitative susceptibility mapping.

Kofi Deh 1 , Sarah Eskreis-Winkler 2 , Pascal Spincemaille 2 , Thanh Nguyen 2 , and Yi Wang 1,3

1 Weill Cornell Medical College, New York, NY, United States, 2 Weill Cornell Medical College, New York, United States, 3 Department of Biomedical Engineering, Cornell University, NY, United States

The amount of variation between quantitative susceptibility maps (QSM) of the same subject acquired with different MRI systems has remained an open question. We investigated this problem by comparing QSM images acquired at two different sites, one with a Siemens 3T and the other with a GE 3T scanner. We obtained high correlation coefficients for QSM images from the two sites (0.99 for phantoms, 0.97 for humans). Taken together with our Bland-Altman plots of the data, which indicated no bias, we conclude that scanner systems we studied may be used interchangeably.

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