Title :
SAR calculation of electromagnetic pulse to a spherical head
Author :
Jikang, Zhong ; Baohua, Wang
Author_Institution :
Res. Center of Med. Eng., Shanghai Tiedao Univ., China
fDate :
29 Oct-1 Nov 1998
Abstract :
A model of spherical head has been constructed, which consists of skull and interior tissue with different constitutive parameters. Under the radiation of an electromagnetic Gaussian pulse, the local field and SAR in the brain has been calculated by the method of finite difference time domain (FDTD). The paper shows that the SAR near the center of the head has a peak. But the average energy absorbed in the brain does not change linearly as the width of a pulse increases. There is a maximum of SAR at a certain width of a pulse
Keywords :
Maxwell equations; biological effects of microwaves; brain; electromagnetic wave absorption; finite difference time-domain analysis; physiological models; EM field distribution; EM wave absorption; FDTD method; Gaussian pulse radiation; Maxwell equations; average energy absorbed; brain; constitutive parameters; electromagnetic pulse; local field; pulse width; pulsed microwaves; specific absorption rate calculation; spherical head model; EMP radiation effects; Electromagnetic fields; Electromagnetic heating; Electromagnetic modeling; Electromagnetic radiation; Electromagnetic scattering; Finite difference methods; Humans; Magnetic heads; Time domain analysis;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.746209
