A Guideline for Complex Permittivity Retrieval of Tissue-Mimicking Phantoms From Open-Ended Coaxial Probe Response With Deep Learning

Joof, Sulayman; Aydınalp, Cemanur; Dilman, İsmail; Akıncı, Mehmet Nuri; Yilmaz, Tuba; Çayören, Mehmet; Akduman, İbrahim

doi:10.1109/tmtt.2022.3209701

Cited by 9 publications

(2 citation statements)

References 34 publications

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“…Additionally, it also introduces some undesired frequency responses (unexpected ripples due to sharp frequency termination at the corners) around minimum and/or maximum frequencies in the band as noted in the study 19 . Open-ended waveguide aperture/coaxial probe measurements utilized in the studies 20 – 23 can be used to examine near-field response of samples (solid, liquid or powder). However, these methods assume, in general, that the liquid/powder sample has large attenuation at the probe opening or the solid sample has a large surface area.…”

Section: Introductionmentioning

confidence: 99%

Simple and inexpensive microwave setup for industrial based applications: Quantification of flower honey adulteration as a case study

Hasar,

Ozturk

et al. 2024

Sci Rep

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A simple and inexpensive microwave measurement setup based on measurements of magnitudes of transmission properties ($$|S_{21}|_{\text {dB}}$$ | S 21 | dB ) is proposed for industrial-based microwave aquametry (moisture or water content) applications. An easy-to-apply calibration procedure based on normalization is implemented to eliminate systematic errors in the measurement system. As a case study, we applied this setup for the quantification of water-adulteration in flower honey. After validating this system by distilled water and pure flower honey measurements, $$|S_{21}|_{\text {dB}}$$ | S 21 | dB measurements of the pure flower honey with various adulteration percentages ($$\delta$$ δ ) up to 9% are conducted to examine the performance of the measurement setup for quantification of water adulteration. A multi-dimensional fitting procedure is implemented to predict $$\delta$$ δ using the proposed inexpensive microwave measurement setup. It is shown that it is possible to quantify an adulteration level with an accuracy better than $${\mp } 1$$ ∓ 1 % by the proposed measurement setup and the applied multi-dimensional fitting procedure.

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Section: Introductionmentioning

confidence: 99%

Simple and inexpensive microwave setup for industrial based applications: Quantification of flower honey adulteration as a case study

Hasar,

Ozturk

et al. 2024

Sci Rep

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“…In particular, gigahertz-band electromagnetic waves (microwaves) that penetrate the skin can be used to measure glucose in aqueous solutions, − saline solutions, − and hydrogels, − as well as in animals and humans. , In addition, there are various means of radiating radio waves, for example, open-ended coaxial probes, split-ring resonators, , microstripe antennas, patch antennas, cavity sensors, coplanar sensors, and multimodality analysis . Biomimetic homogeneous hydrogel phantoms − made of, for instance, gelatin, agarose, poly(methyl methacrylate), and flour can be used in combination with computer simulations , for validation before the experiments are conducted on actual organisms. Here, the skin is not a uniform tissue but rather is multilayered consisting of the stratum corneum, epidermis, and dermis with sweat glands or moles.…”

Section: Introductionmentioning

confidence: 99%

Noninvasive Glucose Sensing in Dielectrically Equivalent Multilayer Skin Phantoms

Fukada,

Nakamura,

Tajima

et al. 2023

Langmuir

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The interstitial fluid of the skin contains glucose levels comparable to those of blood. Noninvasive glucose sensing by microwaves has great potential to relieve diabetics from the burden of daily blood sampling, but improving the selectivity of this method remains a challenge. This study reports a dielectrically equivalent multilayer skin phantom and provides insight into the criteria for noninvasive glucose sensing by conducting dielectric analysis. The skin phantom was a hydrogel composed of gelatin, glucose, sodium chloride, and water covered by paraffin-impregnated paper. Investigations conducted on a wide range of component concentrations revealed characteristic relative permittivity and dielectric loss determined by the amount of electrolyte and solution that was independent of the amount of glucose. Since the microwave response due to glucose tends to be buried in noise, we developed a flowchart that first identifies the amounts of electrolytes and proteins, which are the major components other than glucose, and then quantifies the remaining glucose content. This noninvasive glucose sensing method would not be limited to the medical healthcare field; it could potentially be used in food manufacturing processes, livestock farming, and plant cultivation management.

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EIT Complex Admitance Reconstruction through Intervalar Evaluation

Martins,

Tsuzuki

2024

IFAC-PapersOnLine

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A Guideline for Complex Permittivity Retrieval of Tissue-Mimicking Phantoms From Open-Ended Coaxial Probe Response With Deep Learning

Cited by 9 publications

References 34 publications

Simple and inexpensive microwave setup for industrial based applications: Quantification of flower honey adulteration as a case study

Simple and inexpensive microwave setup for industrial based applications: Quantification of flower honey adulteration as a case study

Noninvasive Glucose Sensing in Dielectrically Equivalent Multilayer Skin Phantoms

EIT Complex Admitance Reconstruction through Intervalar Evaluation

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