International Communications in Heat and Mass Transfer An analysis of heat transfer in liver tissue during microwave ablation using single and double slot antenna☆ P. Keangin, P. Rattanadecho⁎, T. Wessapan Research Center of Microwave Utilization in Engineering (R.C.M.E.), Department of Mechanical Engineering, Thammasat University (Rangsit Campus), Pathumthani 12120, Thailand Microwave Heating of a Cancer Tumor - COMSOL Multiphysics The purpose of this model is to compute the radiation field and the Specific Absorption Rate (SAR) in liver tissue for a thin coaxial slot antenna used in microwave coagulation therapy. A simulation of the resulting temperature distribution in the liver is also included. Antenna Performance Simulation of a Probe for Thermal ... Contact Remcom Support about the project files for this example by clicking here. A double slot choked antenna developed for hepatic microwave ablation (tumor treatment) is simulated in XFdtd to determine antenna performance and the effectiveness of the device for treating deep-seated tumors.
causes detrimental tissue heating along the antenna insertion region with respect to coaxial slot antenna. Key-Words: - Microwave ablation (MWA), tumor, Finite Element Method (FEM), Coaxial slot antenna, coaxial dipole antenna. 1 Introduction Hepatocellular carcinoma (HCC), or primary liver cancer, is the 6th most common cancer worldwide
This paper is on the effect of a T-ring shape structure to enhance the capability of a microwave coaxial slot antenna (MCA) in the treatment of liver cancer. Theoretical evaluation of the treatment effectiveness of a novel ... For the first time, we report a novel design for a coaxial antenna with greatly increased possibility of conformal treatment, a coaxial multi-slot antenna with multiple, preoperative, adjustable, slots for conformal microwave ablation. Theoretical simulations revealed that our coaxial multi-slot antenna could greatly decrease over-treatment compared with the conventional coaxial-slot antenna. Additionally, the coaxial-slot antenna with ten slots generates the smallest over-treatment region ... MEASUREMENTS, ANTENNA DESIGN AND ADVANCED COMPUTER MODELING FOR ... Microwave hepatic ablation is a new promising technology to treat both primary and metastatic tumors of the liver by delivering microwave power with an antenna to heat and destroy the tumors. Computer Modeling for Microwave Ablation in Breast Cancer Using a ... Microwave energy is a promising alternative treatment because it can preferentially heat and damage high-water-content breast carcinomas. In order to evaluate the feasibility of using this technique to treat breast cancer, a coaxial slot antenna computer simulation based on an axisymmetric finite element method (FEM) model was used to compare heating differences between cancer and normal breast tissue. Three FEM computer models were developed: in one of them, the coaxial slot antenna was ...
Antenna design for microwave hepatic ablation using an axisymmetric ...
A coaxial-slot antenna for invasive microwave hyperthermia ...
Analysis of efficiency of different antennas for microwave ablation ...
therapy are determined by the type of microwave radiative antenna. The thermal field of biological tis- sue produced by microwave radiative antenna is in- vestigated in this paper. The distribution of thermal field and specific absorption rate (SAR) of invasive coaxial-slot antenna in the frequency of 2450 MHz Dual-slot antennas for microwave tissue heating: Parametric design ...
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A Dual-Slot Microwave Antenna for More Spherical Ablation … Aug 01, 2013 · • The dual-slot microwave antenna can create a more spherical ablation zone than the monopole antenna can in ex vivo and in vivo liver tissue. • Substantial water vapor is formed and can be visualized with intraprocedural CT imaging to characterize ablation zone growth during microwave … A coaxial slot antenna with frequency of 433 MHz for microwave …
2 The Open Nanomedicine Journal, 2011, 3, 2-9 1875-9335/11 2011 Bentham Open Open Access Coaxial Slot Antenna Design for Microwave Hyperthermia using Finite-Difference Time-Domain and Finite Element Method International Journal of Heat and Mass Transfer