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Abstract #2200

Magnetic susceptibility source separation using multi-echo GRE data only

Taehyun Hwang1, Jingu Lee1, Hyeong-Geol Shin1, Doohee Lee1, Joon Yul Choi1, Hyunsung Eun1, Yoonho Nam2, and Jongho Lee1

1Electrical and Computer Engineering, Seoul National University, Seoul, Republic of Korea, 2Department of Radiology, Seoul St. Mary's Hospital, Colleg of Medicine, The Catholic University of Korea, Seoul, Republic of Korea

In this work, we explored an alternative approach of using nominal $$$R_2^{\:'}$$$ instead of measured $$$R_2^{\:'}$$$ in separating the two susceptibility sources. The linear relationship between $$$R_2^{*}$$$ and $$$R_2^{\:'}$$$ was investigated and used to obtain the nominal $$$R_2^{\:'}$$$ values. The positive and negative magnetic susceptibility source maps using nominal $$$R_2^{\:'}$$$ showed similar susceptibility distribution to the map using measured $$$R_2^{\:'}$$$.

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