A 3-D hp finite/infinite element method to calculate power deposition in the human head.
The electromagnetic power deposition and transfer properties of a G1 continuous head model reconstructed from magnetic resonance imaging (MRI) data are investigated by using the coupled hp finite/infinite element (FE/IE) method. The discretization error is controlled by a self-adaptive process driven by an explicit a posteriori error estimate. Based on the benchmark problem of reproducing the Mie series solution, the scattering of a plane wave on the curvilinear head model is used to evaluate the hp FE/IE approach and calibrate the error bound. The radiation pattern from a short dipole antenna modeling a cell phone, is analyzed in terms of the level and distribution of the specific absorption rates (SAR). The numerical experiments show that the hybrid hp FE/IE implementation is a competitive tool for accurate assessment of human electromagnetic exposure.
Xue
Dong
D
Department of Aerospace Engineering and Engineering Mechanics, University of Texas at Austin, Austin, TX 78712, USA. cynthia@ices.utexas.edu
Demkowicz
Leszek
L
Hao
Ling
L
D001921:Brain / Q000000981:diagnostic imaging* / Q000502:physiology*; D040421:Cell Phone; D003198:Computer Simulation; D004735:Energy Transfer / Q000502:physiology*; D020342:Finite Element Analysis; D006257:Head / Q000502:physiology* / Q000528:radiation effects*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods; D008872:Microwaves; D008954:Models, Biological; D011829:Radiation Dosage; D011859:Radiography; D011874:Radiometry / Q000379:methods*; D012062:Relative Biological Effectiveness; D018570:Risk Assessment / Q000379:methods; D012307:Risk Factors