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

fYear

2000

fDate

2000

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Science Conference, 2000. 17th NRSC '2000. Seventeenth National

Conference_Location

Minufiya

Print_ISBN

977-5031-64-8

Type

conf

DOI

10.1109/NRSC.2000.838980

Filename

838980