A Computational Study on Number of Elements in Antenna Array for Focused Microwave Breast Hyperthermia

Li, Jianian; Xu, Lifan; Wang, Xiong

doi:10.1109/imbioc.2019.8777809

Cited by 10 publications

(6 citation statements)

References 17 publications

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“…The radiated field of the antenna is polarized along the x axis in Figure 2(a). The operating frequency of the antenna is 2.45 GHz [28],…”

Section: Design Of Antenna Arraymentioning

confidence: 99%

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Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Wang,

Xi,

et al. 2024

Preprint

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Focused microwave breast hyperthermia (FMBH) employs a phased antenna array to perform beamforming that can focus microwave energy at targeted breast tumors. Selective heating of the tumor endows the hyperthermia treatment with high accuracy and low side effects. The effect of FMBH is highly dependent on the applied phased antenna array. This work investigates the effect of polarizations of antenna elements on the microwave focusing results by simulations. We explore two kinds of antenna arrays with the same number of elements using different digital realistic human breast phantoms. The first array has all the elements’ polarization in the vertical plane of the breast while the second array has half elements’ polarization in the vertical plane and the other half in the transverse plane, i.e., cross polarization. In total 96 sets of different simulations are performed, and the results show that the second array leads to a better focusing effect in dense breasts than the first array. This work is very meaningful for the potential improvement of the antenna array for FMBH, which is of great significance for the future clinical applications of FMBH. The antenna array with cross polarization can also be applied in micro-wave imaging and sensing for biomedical applications.

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“…The radiated field of the antenna is polarized along the x axis in Figure 2(a). The operating frequency of the antenna is 2.45 GHz [28],…”

Section: Design Of Antenna Arraymentioning

confidence: 99%

“…Generally, more antenna elements offer more degrees of freedom, which can produce better focusing effects for tumors in the breast with complex structures [28]. However, the focusing effect and the overall array size also need to be balanced.…”

Section: Design Of Antenna Arraymentioning

confidence: 99%

Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Wang,

Xi,

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The radiated field of the antenna is polarized along the x axis in Figure 2a. The operating frequency of the antenna is 2.45 GHz [33], which is an ISM frequency suitable for medical applications. It is reported that 2.45 GHz can result in a penetration depth larger than 5 cm in human breasts.…”

Section: Design Of Antenna Arraymentioning

confidence: 99%

Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Wang,

Xi,

et al. 2024

Sensors

Self Cite

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Focused microwave breast hyperthermia (FMBH) employs a phased antenna array to perform beamforming that can focus microwave energy at targeted breast tumors. Selective heating of the tumor endows the hyperthermia treatment with high accuracy and low side effects. The effect of FMBH is highly dependent on the applied phased antenna array. This work investigates the effect of polarizations of antenna elements on the microwave-focusing results by simulations. We explore two kinds of antenna arrays with the same number of elements using different digital realistic human breast phantoms. The first array has all the elements’ polarization in the vertical plane of the breast, while the second array has half of the elements’ polarization in the vertical plane and the other half in the transverse plane, i.e., cross polarization. In total, 96 sets of different simulations are performed, and the results show that the second array leads to a better focusing effect in dense breasts than the first array. This work is very meaningful for the potential improvement of the antenna array for FMBH, which is of great significance for the future clinical applications of FMBH. The antenna array with cross polarization can also be applied in microwave imaging and sensing for biomedical applications.

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“…The radius of the ring−phased array was set to 100 mm to accommodate most breast sizes. The proposed miniaturized UWB antenna was used to compose the circular phased array, which increased the number of elements and reduced the focusing size [ 36 ]. The oil−in−water was filled in the phased array as a coupling medium.…”

Section: Selection Of Phased Array Configurationmentioning

confidence: 99%

Design of Ultra-Wideband Phased Array Applicator for Breast Cancer Hyperthermia Therapy

Lyu

Li²,

Li³

et al. 2023

Sensors

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Focused microwave−hyperthermia therapy has recently emerged as a key technology in the treatment of breast cancer due to non−invasive treatment. An applicator of a three−ring phased array consisting of ultra−wideband (UWB) microstrip antennas was designed for breast cancer therapy and operates at 0.915 GHz and 2.45 GHz. The proposed antenna has an ultra−wideband from 0.7 GHz to 5.5 GHz with resonant frequencies of 0.915 GHz and 2.45 GHz and dimensions of 15 × 43.5 × 1.575 mm3. The number of each ring was chosen to be 12 based on the SAR distribution and the performance indicators of tumor off−center focusing results for four different numbers of single−ring arrays. The homogeneous breast model is applied to a three−ring phased array consisting of 36 elements for focused simulation, and 1 cm3 and 2 cm3 tumors are placed in three different locations in the breast. The simulation results show that the proposed phased array has good performance and the capability to raise the temperature of different volumes of breast cancer above 42.5 °C after choosing a suitable operating frequency. The proposed applicator allows for precise treatment of tumors by selecting the appropriate operating frequency based on the size of the malignant tumor.

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A Computational Study on Number of Elements in Antenna Array for Focused Microwave Breast Hyperthermia

Cited by 10 publications

References 17 publications

Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Improvement of Phased Antenna Array Applied in Focused Microwave Breast Hyperthermia

Design of Ultra-Wideband Phased Array Applicator for Breast Cancer Hyperthermia Therapy

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