Experimental Evaluation of Composite Tissue-Type Ultrasound and Microwave Imaging

Mojabi, Puyan; LoVetri, Joe

doi:10.1109/jmmct.2019.2906606

Cited by 12 publications

(2 citation statements)

References 54 publications

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“…Although MRI can locate some malignancies missed in mammograms, ultrasound is more widely used due to its lower cost. More recently, microwave imaging has gained interest in early-stage breast cancer detection for its moderate biological effects and its potential for low cost diagnostics (Kwon andLee 2016, Mojabi andLoVetri 2019). This makes the combination of ultrasound and microwave imaging an attractive approach for breast cancer detection.…”

Section: Introductionmentioning

confidence: 99%

“…There are only a few reports of materials for multimodality imaging involving microwaves and ultrasound. Multimodality materials with properties suitable for x-ray, ultrasound, MRI, and microwaves have been proposed by Ruvio et al (2020), other works have presented combined ultrasound and microwave imaging using phantoms although no specific characterization of the materials were reported (Mojabi andLoVetri 2019, Jiang et al 2005). Other multimodality phantoms have been proposed and characterized for ultrasound using materials that are compatible with microwave imaging, although no dielectric properties were reported (In et al 2017, He et al 2019.…”

Section: Introductionmentioning

confidence: 99%

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Breast tissue mimicking phantoms for combined ultrasound and microwave imaging

Fear

Curiel

2021

Phys. Med. Biol.

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We present a new formulation for a breast tissue-mimicking phantom for combined microwave and ultrasound imaging to assist breast cancer detection. Formulations based on coconut oil, canola oil, agar and glass beads were used to mimic skin and fat tissues. First, 36 recipes were fabricated, and properties were measured to determine the relationship and possible interaction between ingredients with the ultrasound and microwave properties. Based on these results, the formulae were developed to mimic different tissues found in breast, including skin, fat, fibroglandular, and tumour tissues. All phantoms contained a base of agar and glass beads at different proportions depending on the tissue mimicked. Tumour and fibroglandular tissues were best mimicked by adding polyvinylpyrrolidone (PVP), while using coconut oil for skin and canola oil for fat produced the best results. Five final phantoms with different internal structures were fabricated and imaged using B-mode ultrasound and a microwave transmission system. Microwave permittivity maps were obtained from the microwave system and compared to ultrasound images. The structure and composition of the phantoms were all confirmed through this microwave and ultrasound imaging.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Breast tissue mimicking phantoms for combined ultrasound and microwave imaging

Fear

Curiel

2021

Phys. Med. Biol.

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Weighted delay-and-sum beamformer for breast cancer detection using microwave imaging

et al. 2021

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On the dielectric and mechanical characterization of tissue‐mimicking breast phantoms

et al. 2022

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Objective: In this paper, we focus on the dielectric and mechanical characterization of tissue-mimicking breast phantoms. Approach: Starting from recipes previously proposed by our research group, based on easy-to-handle, cheap and safe components (i.e., sunflower oil, deionized water, dishwashing liquid and gelatin), we produced and tested, both dielectrically and mechanically, more than 100 samples. The dielectric properties were measured from 500 MHz to 14 GHz, the Cole-Cole parameters were derived to describe the dielectric behaviour in a broader frequency range, and the results were compared with dielectric properties of human breast ex vivo tissues up to 50 GHz. The macroscale mechanical properties were measured by means of unconfined compression tests, and the impact of the experimental conditions (i.e., preload and test speed) on the measured Young’s moduli was analysed. In addition, the mechanical contrast between healthy- and malignant-tissue-like phantoms was evaluated. Main results: The results agree with the literature in the cases in which the experimental conditions are known, demonstrating the possibility to fabricate phantoms able to mimic both dielectric and mechanical properties of breast tissues. Significance: In this work, for the first time, a range of materials reproducing all the categories of breast tissues were experimentally characterized, both from a dielectric and mechanical point of view. A large range of frequency were considered for the dielectric measurements and several combinations of experimental conditions were investigated in the context of the mechanical characterization. The proposed results can be useful in the design and testing of complementary or supplementary techniques for breast cancer detection based on micro/millimetre-waves, possibly in connection with other imaging modalities.

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Experimental Evaluation of Composite Tissue-Type Ultrasound and Microwave Imaging

Cited by 12 publications

References 54 publications

Breast tissue mimicking phantoms for combined ultrasound and microwave imaging

Breast tissue mimicking phantoms for combined ultrasound and microwave imaging

Weighted delay-and-sum beamformer for breast cancer detection using microwave imaging

On the dielectric and mechanical characterization of tissue‐mimicking breast phantoms

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