Title :
Parallel-FDTD and experimental results of SAR for flat and head phantoms @ 900 MHz
Author :
Filho, Ricardo H T Chamié ; De Oliveira, Rodrigo M S ; da S S Sobrinho, C.L. ; De Almeida, Antonio Marini
Author_Institution :
Inst. of Technol. (ITEC), Univ. Fed. do Para, Belem, Brazil
Abstract :
In this work, computational simulations were performed in order to characterize the way electromagnetic radiation interacts with the human head. Average of realistic parameters of bio-materials, such as bones and head liquids, as well as near field radiation parameters of a half-wave dipole are beeing considered in order to achieve results. This way, a software was developed in which Maxwell´s equations are numerically solved by using a Beowulf cluster. The solver is based on the finite-difference time-domain method, associated to domain truncation by the uniaxial perfectly mactched layers technique and full-wave solutions have been obtained from the simulation. All averaged SAR values and electric field distributions inside modeled analysed structures have been compared to experimental results obtained in a full setup laboratory with all equipments necessary to perform dosimetric validations of telecomunication devices as shown in IEEE 1528.
Keywords :
Maxwell equations; bioelectric phenomena; biological effects of radiation; biomagnetism; bone; dipole antennas; dosimetry; finite difference time-domain analysis; medical computing; parallel processing; phantoms; Beowulf cluster; Maxwell´s equations; SAR; biomaterial parameters; computational simulations; domain truncation; finite difference time domain method; flat phantoms; frequency 900 MHz; half wave dipole; head phantoms; human head-electromagnetic radiation interaction; near field radiation parameters; parallel FDTD; specific absorption rate; uniaxial perfectly mactched layers technique; Bones; Computational modeling; Electromagnetic radiation; Finite difference methods; Humans; Imaging phantoms; Liquids; Maxwell equations; Near-field radiation pattern; Time domain analysis;
Conference_Titel :
Microwave and Optoelectronics Conference (IMOC), 2009 SBMO/IEEE MTT-S International
Conference_Location :
Belem
Print_ISBN :
978-1-4244-5356-6
Electronic_ISBN :
1679-4389
DOI :
10.1109/IMOC.2009.5427561