Title :
Electromagnetic absorption in human brains by using fast wavelet transform methods
Author :
Chen, Chih-Ming ; Tarng, Jenn-Hwan ; Huang, Jiunn-Ming
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao-Tung Univ., Hsin-Chu, Taiwan
Abstract :
An application of fast wavelet transform methods, including discrete wavelet transform (DWT) and discrete wavelet packet (DWP) methods, to electromagnetic absorption in the human brain is presented. The total induced electric field inside the brain, determined from the tensor integral-equation (TIE), is solved by the method of moments (MoM), DWT and DWP, respectively. It is found that using the wavelet transform methods, especially the DWP method, in the targeted problems will lead to very sparse moment matrices and relatively reduced computational complexities and memory requirements. Numerical examples are given to show the validity and effectiveness of the method
Keywords :
bioelectric phenomena; biological effects of microwaves; brain models; discrete wavelet transforms; electromagnetic wave absorption; health hazards; integral equations; method of moments; sparse matrices; computational complexities; discrete wavelet packet; discrete wavelet transform; electromagnetic absorption; fast wavelet transform methods; human brain; method of moments; numerical examples; sparse moment matrices; tensor integral equation; total induced electric field; Discrete wavelet transforms; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic wave absorption; Humans; Integral equations; Message-oriented middleware; Tensile stress; Wavelet packets; Wavelet transforms;
Conference_Titel :
Microwave Conference, 2001. APMC 2001. 2001 Asia-Pacific
Conference_Location :
Taipei
Print_ISBN :
0-7803-7138-0
DOI :
10.1109/APMC.2001.985623
