A Balun-Free Helical Antenna for Minimally Invasive Microwave Ablation

Luyen, Hung; Hagness, Susan C.; Behdad, Nader

doi:10.1109/tap.2015.2389223

Cited by 70 publications

(37 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Antenna is the most important component of the system that governs microwave energy distribution during tissue ablation. Antennas such as monopole [6], dipole [7,8], helical [9], triaxial [10], choked [11], sleeved [12,13] and double slot [14] have been proposed in the field of microwave thermal therapy. Microwave antennas are mostly fabricated from a thin coaxial cables of diameters between 1.5 and 2.5 mm [15].…”

Section: Introductionmentioning

confidence: 99%

Analysis of efficiency of different antennas for microwave ablation using simulation and experimental methods

Ibitoye

Orotoye

Nwoye

et al. 2018

Egyptian Journal of Basic and Applied Sciences

View full text Add to dashboard Cite

The objective of this study is to analyze the efficiency of different antennas proposed for microwave ablation therapy using numerical simulation and experimental approach. The simulation was done with COMSOL MULTIPHYSICS Ò software to design antenna prototypes and evaluate its reflection coefficient, power dissipation distribution, power dissipation density, specific absorption rate and temperature distribution in tissue. Antennas were fabricated from a 50 X RG405/U semi-rigid coaxial cable to match the geometric prototypes generated during simulation. Ex vivo bovine livers were ablated with the fabricated antennas using 50 W for 5 and 10 min. Ablation diameters, ablation lengths and aspect ratios were determined. Sleeved antenna produced lowest reflection coefficient, high power dissipation, low power dissipation density, high SAR and high temperature in the simulation. Sleeved antenna provides excellent localization, large ablative diameter, low backward heating and high aspect ratio than single slot, dual slot and monopole antennas.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of efficiency of different antennas for microwave ablation using simulation and experimental methods

Ibitoye

Orotoye

Nwoye

et al. 2018

Egyptian Journal of Basic and Applied Sciences

View full text Add to dashboard Cite

show abstract

“…Microwave ablation monitoring via microwave tomography also has been researched in IREA [99]. In addition, the research has been progressed in therapeutic aspects with microwave ablation at IREA and University of Wisconsin-Madison [100–102]. …”

Section: Microwave Breast Imagingmentioning

confidence: 99%

Recent Advances in Microwave Imaging for Breast Cancer Detection

Kwon

Lee

2016

International Journal of Biomedical Imaging

152

View full text Add to dashboard Cite

Breast cancer is a disease that occurs most often in female cancer patients. Early detection can significantly reduce the mortality rate. Microwave breast imaging, which is noninvasive and harmless to human, offers a promising alternative method to mammography. This paper presents a review of recent advances in microwave imaging for breast cancer detection. We conclude by introducing new research on a microwave imaging system with time-domain measurement that achieves short measurement time and low system cost. In the time-domain measurement system, scan time would take less than 1 sec, and it does not require very expensive equipment such as VNA.

show abstract

“…Models have been widely used during the design and optimization of ablation antennas. [11][12][13][14][15][16] Furthermore, models are under development for formulating patient-specific treatment planning strategies as well as postprocedural assessment for several ablation energy modalities. [17][18][19][20] The precision of MWA computational models and their outputs are highly dependent on patientspecific tissue physical and physiological properties.…”

Section: Introductionmentioning

confidence: 99%

Sensitivity of microwave ablation models to tissue biophysical properties: A first step toward probabilistic modeling and treatment planning

et al. 2016

View full text Add to dashboard Cite

Dielectric parameters, blood perfusion rate, and the temperature interval across which the tissue changes phase were found to have the most significant impact on MWA model outputs. The latent heat of tissue water vaporization and the volumetric heat capacity of the vaporized tissue were recognized as the least influential parameters. Uncertainties in model outputs identified in this study can be incorporated to provide probabilistic maps of expected ablation outcome for patient-specific treatment planning.

show abstract

A Balun-Free Helical Antenna for Minimally Invasive Microwave Ablation

Cited by 70 publications

References 15 publications

Analysis of efficiency of different antennas for microwave ablation using simulation and experimental methods

Analysis of efficiency of different antennas for microwave ablation using simulation and experimental methods

Recent Advances in Microwave Imaging for Breast Cancer Detection

Sensitivity of microwave ablation models to tissue biophysical properties: A first step toward probabilistic modeling and treatment planning

Contact Info

Product

Resources

About