Design optimization of taperéd cap floating sleeve antenna for interstitial microwave ablation for liver tumor

Maini, Surita

doi:10.1109/icce.2016.7430623

Cited by 6 publications

(7 citation statements)

References 13 publications

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“…The most common antenna structure used for interstitial MWA is the coaxial antenna. Till now many researchers have presented several coaxial antennas such as monopole antenna, dipole antenna, choked antenna, slot antenna, and floating sleeve antenna [5]- [48], [9], [49]. Each one of the stated antenna designs has its characterizing performance regarding the heating pattern, backward heating, and the transient behavior under heating [5].…”

Section: Antenna Structures Used For Cancer Ablationmentioning

confidence: 99%

“…It has been used by the physicians, since the beginning of the twentieth century, in the treatment of various forms of tumors. It was found that tumor cells are more affected by the heat than normal cells [5]. Nowadays, thermal tumor ablation became an important candidate in the treatment of many types of cancerous tumors such as the liver, lung, kidney and breast [6], [7].…”

Section: Introductionmentioning

confidence: 99%

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About the Interstitial Microwave Cancer Ablation: Principles, Advantages and Challenges

et al. 2020

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This article presents a review of the interstitial microwave cancer ablation. Microwave cancer ablation is an effective technique for the cancer therapy using the electromagnetic radiations in the microwave range. The idea behind using the microwave electromagnetic radiations in cancer therapy is basically based on dielectric heating of the cancerous tissues until the death of the infected cells. This article reviews the theory of operation of the microwave cancer ablation technique with overview of the electrical properties of the biological tissues as they are key parameters to study the behavior of the cancer ablation process. Advantages of microwave cancer ablation technique over the other techniques especially its most related one, i.e., the radiofrequency cancer ablation are highlighted. Although the microwave cancer ablation has attained high attention by the researchers, many of challenges which degrade its performance still exist. The paper discusses the challenges of the microwave cancer ablation and highlights the efforts done by the researchers to tackle them. Different antenna structures utilized for microwave cancer ablation are presented with mention of their behavior, advantages and disadvantages. Moreover, some of the most recent progresses in the microwave cancer ablation field are presented.

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Section: Antenna Structures Used For Cancer Ablationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

About the Interstitial Microwave Cancer Ablation: Principles, Advantages and Challenges

et al. 2020

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“…The tail of the comet inevitably damages the normal tissues along the shaft of MW antenna. Therefore, modified designs have been proposed to improve radiation properties of antennas by adding a choke or sleeve outside the antennas [30][31][32][33][34], which can effectively suppress the reverse heating. Unfortunately, this is at the expense of an increase in the diameter of the antenna.…”

Section: Introductionmentioning

confidence: 99%

A review of antenna designs for percutaneous microwave ablation

et al. 2021

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Microwave (MW) antenna is a key element in microwave ablation (MWA) treatments as the means that energy is delivered in a focused manner to the tumor and its surrounding area. The energy delivered results in a rise in temperature to a lethal level, resulting in cell death in the ablation zone. The delivery of energy and hence the success of MWA is closely dependent on the structure of the antennas. Therefore, three design criteria, such as expected ablation zone pattern, efficiency of energy delivery, and minimization of the diameter of the antennas have been the focus along the evolution of the MW antenna. To further improve the performance of MWA in the treatment of various tumors through inventing novel antennas, this article reviews the state-of-the-art and summarizes the development of MW antenna designs regarding the three design criteria.

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“…The simple devices to perform an interstitial microwave hyperthermia comprised of a microwave generator, a microwave applicator/antenna, and a flexible coaxial cable to connect the antenna to the microwave generator [4]. Using these thin microwave hyperthermia devices has many advantages: avoiding the possible damage of surrounding tissues and reducing the procedural risks [5].…”

Section: Introductionmentioning

confidence: 99%

“…Many studies designed microwave sleeve antennas for hepatic microwave hyperthermia using simple models of both tumors and livers-which did not reflect the actual effect of the anatomical structures and blood circulation on the temperature distribution [5][6][7][8][9][10]. This work aims to design a microwave sleeve antenna capable of heating hepatic tumors using realistic 3D liver and tumor models.…”

Section: Introductionmentioning

confidence: 99%

Modeling of interstitial microwave hyperthermia for hepatic tumors using floating sleeve antenna

et al. 2022

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Microwave hyperthermia is a treatment modality that uses microwaves to destroy cancer cells by increasing their temperature to 41-45°C. This study aims to design, modeling, and simulation of a microwave sleeve antenna for hepatic (liver) hyperthermia. Method: The designed antenna resonated at 2.45 GHz. The antenna was tested in six different 3D liver models: Model A: without a tumor and blood vessels; Model B: with a realistic tumor (2×3 cm) and without blood vessels; Model C: created by adding blood vessels to model B; Model D: created by adding a small tumor (1.5×1.5 cm) to model C and changed its location; Model E: same as model C with a different tumor size; Model F: model with a simple spherical tumor (1.5×1.5 cm). Results:The return loss of the antenna varied from -45 dB to -25 dB for the 6 models. The Specific Absorption Rate (SAR) was between 29 W/kg to 30W/kg in the tumors and below 24 W/Kg in the surrounding tissues. The tumors' temperature elevated to 43-45°C, while the temperature of the surrounding tissues was below 41°C. Conclusions:The results showed the capability of the designed antenna to raise the temperature of hepatic tumors to the therapeutic ranges of hyperthermia.

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Design optimization of taperéd cap floating sleeve antenna for interstitial microwave ablation for liver tumor

Cited by 6 publications

References 13 publications

About the Interstitial Microwave Cancer Ablation: Principles, Advantages and Challenges

About the Interstitial Microwave Cancer Ablation: Principles, Advantages and Challenges

A review of antenna designs for percutaneous microwave ablation

Modeling of interstitial microwave hyperthermia for hepatic tumors using floating sleeve antenna

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