Title :
Focusing of 915 MHz Electromagnetic Power on Deep Human Tissues: A Mathematical Model Study
Author :
Arcangeli, Giorgio ; Lombardini, Pietro P. ; Lovisolo, Giorgio A. ; Marsiglia, Guglielmo ; Piattelli, Maurizio
Author_Institution :
Istituto Medico e di Ricerca Scientifica
Abstract :
The distribution of ohmic power in a CAT scan section of a human chest irradiated with 915 MHz peripheral sources is calculated using the moment method. In the simulation, the chest section (assumed to be uniformally developed along the cranio-caudal axis for a height equivalent to the field penetration) is subdivided in 235 subvolumes of known electric constants. The focusing of power on a selected region of the chest is obtained by properly exciting the sources. An optimization method allows selecting the amplitudes and phases in such a way that the power level in all subvolumes outside the focal region is kept below a given threshold.
Keywords :
Applicators; Dielectrics; Electromagnetic heating; Humans; Integral equations; Mathematical model; Moment methods; Skin; Temperature; X-ray tomography; Adult; Electromagnetic Fields; Electromagnetics; Humans; Hyperthermia, Induced; Male; Mathematics; Microwaves; Models, Biological; Thorax;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.1984.325369
