title: Limits on focused power deposition for electromagnetic hyperthermia.
abstract: Computations of SAR distributions in homogeneous regions and in multilayered concentric cylindrical models of the torso are presented to illustrate how an increase in the localization of the fields and/or a decrease in attenuation of the fields in one dimension is accompanied by a decrease in the localization and/or an increase in the attenuation in the other dimensions. Sharp gradients that may exist in the EM intensity patterns at the surface of a body become less pronounced further into the body because the wave components having higher spatial frequencies are most rapidly attenuated.
authors.affiliation: Clarkson University, Department of Electrical and Computer Engineering, Potsdam, NY 13699-5720.
authors.forename: D Q
authors.initials: DQ
authors.lastname: Chowdhury
authors.forename: S C
authors.initials: SC
authors.lastname: Hill
mesh_terms: D001698:Biomedical Engineering; D055592:Biophysical Phenomena; D001703:Biophysics; D004574:Electromagnetic Fields; D006358:Hot Temperature / Q000627:therapeutic use*; D006801:Humans; D008962:Models, Theoretical; D009369:Neoplasms / Q000628:therapy*; D013696:Temperature