Antenna Designs for Microwave Tissue Ablation

Antenna designs for MIMO systems

This chapter describes the development and testing of antenna elements for use in a Multiple-input-multiple-output (MIMO) application. MIMO wireless systems have antenna arrays at both the transmitter and receiver terminals. This project focuses on the terminal MIMO antenna array design. The requirements of the antenna element at the terminal are as yet not well-defined but will include (for co...

Development and Analysis of Coaxial Slot Antenna in Comparision with Coaxial Dipole Antenna for Interstitial Microwave Ablation

Hepatocellular carcinoma (HCC) is the most common malignant tumors to affect the liver. Microwave ablation is efficiently used for treatment of liver cancer. Although surgical resection remains the gold standard for treatment of liver cancer, but only 5-10% patients are the candidates for surgical resection due to numbers of limitations. Because most patients with HCC can not be treated with su...

Design optimization of a robust sleeve antenna for hepatic microwave ablation.

We describe the application of a Bayesian variable-number sample-path (VNSP) optimization algorithm to yield a robust design for a floating sleeve antenna for hepatic microwave ablation. Finite element models are used to generate the electromagnetic (EM) field and thermal distribution in liver given a particular design. Dielectric properties of the tissue are assumed to vary within +/- 10% of a...

Microwave ablation for lung cancer.

Antenna design for microwave hepatic ablation using an axisymmetric electromagnetic model

BACKGROUND An axisymmetric finite element method (FEM) model was employed to demonstrate important techniques used in the design of antennas for hepatic microwave ablation (MWA). To effectively treat deep-seated hepatic tumors, these antennas should produce a highly localized specific absorption rate (SAR) pattern and be efficient radiators at approved generator frequencies. METHODS AND RESUL...