Title :
Application of FDTD method for kidney microwave hyperthermia using annular phased array
Author :
Ismail, N.H. ; El-Nagar, A.A.
Author_Institution :
Fac. of Eng., Alexandria Univ., Egypt
Abstract :
The finite difference time domain (FDTD) method is used to determine the electromagnetic power distribution and calculate the specific absorption rates (SARs) inside human body. In this paper, this method is applied to evaluate SAR in an inhomogeneous tissue which has a cylindrical shape. An annular phased array (APA) consisting of eight dipoles is used to focus the SARs inside the model. A deionized water bolus is placed between the model and the radiating dipoles to improve field matching as well as to obtain superficial cooling. For this mode, focusing SAR by APA at one or both kidneys is investigated
Keywords :
antenna phased arrays; dipole antenna arrays; electromagnetic wave absorption; finite difference time-domain analysis; hyperthermia; kidney; loop antennas; microwave heating; radiation therapy; transmitting antennas; tumours; FDTD method; annular phased array; deionized water bolus; dipoles; electromagnetic power distribution; field matching; finite difference time domain method; human body; inhomogeneous tissue; kidney microwave hyperthermia; radiating dipoles; specific absorption rates; superficial cooling; Biological system modeling; Cooling; Finite difference methods; Humans; Hyperthermia; Microwave theory and techniques; Phased arrays; Power distribution; Shape; Time domain analysis;
Conference_Titel :
Radio Science Conference, 2000. 17th NRSC '2000. Seventeenth National
Conference_Location :
Minufiya
Print_ISBN :
977-5031-64-8
DOI :
10.1109/NRSC.2000.838980
