The treatment of obesity is clinically significant as it is related to many serious heart diseases and diabetes. Therefore, it is very advantageous to be able to non-invasively monitor whether or not a treatment is effective. Presented here is a method using magnetic resonance imaging (MRI) based water-fat separation, quantitative susceptibility mapping (QSM), and transverse relaxation rate ($$$R_{2}^{*}$$$) to dynamically monitor brown adipose tissue (BAT) activation and the white adipose tissue (WAT) beiging process. In a mouse model, increases in susceptibility between 40-164% and increases in $$$R_{2}^{*}$$$ between 32-71% were observed in intracapsular BAT and inguinal WAT indicating metabolic changes related to BAT activation and WAT beiging.
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