In this study we compare B1+ simulations performed on generic anatomic models with subject-specific measured B1+ maps, performed on both adults and children. We introduce a cost function, based on the normalized standard deviations (the ratio between standard deviation and average) of B1+ maps (magnitude), to guide the selection of generic human model to be used for subject-specific maximum local SAR evaluation. Maximum local SAR does not show a significant variation with subject weight and with subject cranial circumference. Limits on maximum SAR are always met for the sequence here considered (SILENT), in all adults and children.
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