A new interstitial choke embedded antenna for microwave ablation

Wakaki, Takahiro; Michiyama, Tetsuyuki; Kuwano, Shuzo

doi:10.1587/comex.2017xbl0048

Cited by 3 publications

(2 citation statements)

References 5 publications

(9 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Unfortunately, this is at the expense of an increase in the diameter of the antenna. To keep the antenna as small as possible, some researchers have proposed to modify the inner structure of antennas such that the sleeves or chokes are implemented inside the antenna [35][36][37]. Further studies showed that the backward heating can be also restrained by adding antenna slots or a cooling system, optimizing the outer conductor structure, or changing the frequency of electromagnetic energy [38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

A review of antenna designs for percutaneous microwave ablation

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

A review of antenna designs for percutaneous microwave ablation

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Furthermore, different studies show that backward heating can be restrained using the new inner structure of antenna composed of a choke or sleeve, as reported in Ref. [25]. Moreover, Ref.…”

Section: Introductionmentioning

confidence: 91%

Improved Modeling of Temperature Evolution during Lung Cancer Tumor Thermal Ablation

Selmi

2024

Physics

View full text Add to dashboard Cite

Microwave ablation (MWA) represents one of the most powerful tools in cancer treatment. This therapeutic modality process is governed by the temperature and absorbed dose of radiation of the cell tissue. This study was performed to control the temperature effect using simulation during the MWA thermal damage of lung tumor. For this reason, a two-dimensional (2D) computational modeling generated for adaptive lung tissue was designed and analyzed using the finite element method (FEM). Different approaches, such as first-order Arrhenius rate equations, Maxwell equations, and the bioheat equation, have been used to simulate necrosis in cells. To control the heat, a proportional–integral–derivative (PID) controller was used to moderate the input microwave power source and to maintain the temperature of the target tip at a lower level of the initial temperature data. Furthermore, full cancer tissue necrosis was also evaluated by processing time and thermal damage fraction. The obtained data proved that the target tip temperature was affected by the temperature distribution and specific absorption rate (SAR). However, a specific treatment period of tumor ablation is required to control and decrease the damage of surrounding healthy tissue to ensure a safe operation without any risk.

show abstract