Specific Absorption Rate estimation from phase-less surfaces measurements in a curved phantom

Modal expansion of the Electric field induced in a human head model by a cellular phone for Specific Absorption Rate (SAR) evaluation is proposed. Using an equivalence principle to expand the E-field and a Singular Value Decomposition (SVD) to reduce the size of the basis, a global optimization is used to find the expansion coefficients to reconstruct the E-field in all the volume of interest from phase-less measurements over two surfaces in a curved phantom.