Determination of the electromagnetic field and SAR pattern of an interstitial applicator in a dissipative dielectric medium.

Journal Article

The spatial distribution of microwave energy absorbed per unit mass (the specific absorption rate or SAR) in biological tissue is calculated for a class of interstitial antennas. The insulated interstitial applicator is simulated as an asymmetrically driven antenna. An expression for the electric field intensity near the antenna is derived and calculated by direct numerical evaluation of a surface integral over the insulation. The predicted specific absorbtion rate patterns obtained using the calculated electric field intensity and the tissue conductivity agree very well with the measured specific absorbtion rate distributions around three different applicators in muscle-equivalent phantoms.

Full Text

Duke Authors

Cited Authors

  • Zhang, Y; Dubal, NV; Takemoto-Hambleton, R; Joines, WT

Published Date

  • 1988

Published In

  • Ieee Transactions on Microwave Theory and Techniques

Volume / Issue

  • 36 / 10

Start / End Page

  • 1438 - 1444

Digital Object Identifier (DOI)

  • 10.1109/22.6092