Elliptically bent conformal phased array of modified box-horns for hyperthermia treatment of tumors
Article first published online: 25 SEP 2007
Copyright 2007 by the American Geophysical Union.
Volume 42, Issue 5, October 2007
How to Cite
2007), Elliptically bent conformal phased array of modified box-horns for hyperthermia treatment of tumors, Radio Sci., 42, RS5004, doi:10.1029/2006RS003530., and (
- Issue published online: 25 SEP 2007
- Article first published online: 25 SEP 2007
- Manuscript Accepted: 16 JUL 2007
- Manuscript Revised: 14 APR 2007
- Manuscript Received: 1 JUN 2006
- specific absorption rate;
 A novel and effective hyperthermia applicator utilizing an elliptically bent conformal phased array of modified box-horns is analyzed using Fresnel-Kirchhoff scalar diffraction field theory. This configuration is mainly intended as a specialized and very effective applicator for hyperthermia treatment of tumor within curved portions of human body such as abdomen, chest, neck, etc. It is proposed that the interior of the modified box-horn as well as feeding device be filled with de-ionized water to provide a better impedance match to the tissue. The contour distribution of specific absorption rate (SAR) in x-y plane, SAR distribution in z-direction, penetration depth, power absorption coefficient and effective field size (EFS) due to the conformal array as well as single modified box-horn are evaluated and compared at 2450 MHz. The effect of change in phase and amplitude excitation of modified box-horn of the array on SAR distribution is also investigated. Results demonstrate that conformal phased array of modified box-horns offers marked improvement in SAR distribution and penetration depth over single modified box-horn. The results obtained by the present analysis for linear array of four titanium dioxide loaded horns terminated in water are validated against published experimental results available in the literature.