Microwave ablation zones were created by using dual-slot and monopole control antennas for 2, 5, and 10 minutes at 50 and 100 W in ex vivo bovine livers. Dual-slot and monopole antennas were then used to create ablation zones at 100 W for 5 minutes in in vivo porcine livers, which also underwent intraprocedural imaging. (PDF) A Novel Microwave Coaxial Slot Antenna for Liver ... PDF | 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. The MCA is composed of an ... Microwave Ablation Antenna with the ablation pattern being ... The Microwave Ablation Antenna works at 2.45GHz and also has a good impedance matching. This kind of Microwave Ablation Antenna can solve the specific shape of the tumor and to realize a large ablation pattern, meanwhile our design has lesser damage to body (for the outer radius of the coaxial-slot antenna is less than 4mm). A Hybrid Slot/Monopole Antenna With Directional Heating ...
A coaxial slot antenna with frequency of 433 MHz for …
Open Access Coaxial Slot Antenna Design 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 Double slot antenna Finite element Liver Microwave ablation Porous media Single slot antenna abstract Microwave ablation (MWA) is a process that uses the heat from microwave energy to kill cancer cells without damaging the surrounding tissue. MWA is emerging as an attractive modality for thermal ther- 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
To compare the performance of a microwave antenna design with two annular slots to that of a monopole antenna design in creating a more spherical ablation zone. A dual-slot antenna comprising two coaxial, annular slots at the distal tip was recently shown to inhibit proximal electric field
Microwave ablation is a technique used in treating hepatocellular carcinoma, especially in cases where surgical removal is impossible. In the present study we are investigating the effects of design characteristics of a coaxial slot antenna (single- versus double-slot, slot-to-tip distance and slot ... MICROWAVE ABLATION ANTENNA SYSTEM WITH SLOT BALUN - Wisconsin ... With reference to FIG. 1, a microwave ablation (MWA) antenna 100 is connected to and fed by a coaxial cable 102 that provides electromagnetic energy to antenna 100 at a selected operating frequency f 0. MWA can be used to provide thermal therapy for treatment of various types of cancer 108 in various tissue/organs 106. TRIAXIAL ANTENNA FOR MICROWAVE TISSUE ABLATION - NeuWave ...
Microwave Slot Antennas - Resource Detail - The…
A coaxial slot antenna with frequency of ... - SpringerLink Abstract. Investigation of the structures and properties of antennas is important in the design of microwave ablation (MWA) system. In this study, we studied the performance of the novel tri- and single-slot antennas with frequency of 433 MHz in ex vivo conditions. A Hybrid Slot/Monopole Antenna With Directional Heating ... We present a new coax-fed interstitial antenna for generating directional heating patterns during microwave ablation. The antenna comprises a base-fed monopole wherein a portion of the outer ...
Fig. 1 shows the array geometry (a) and the temperature distribution for an almost optimized spacing (d optimal = 13 mm between the needles) (b). Following the proper adjustment of the microwaves generator (1W for each antenna), the target …
A Dual-Slot Microwave Antenna for More Spherical Ablation …
MEASUREMENTS, ANTENNA DESIGN AND ADVANCED … MEASUREMENTS, ANTENNA DESIGN AND ADVANCED COMPUTER MODELING FOR MICROWAVE TISSUE ABLATION Deshan Yang Under the supervision of Prof. John G. Webster and Prof. David M. Mahvi at University of Wisconsin-Madison Microwave hepatic ablation is a new promising technology to treat both primary