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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Mohammed, Beadaa
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2022Tapered graded index lens antenna with enhanced penetration for near-field torso imagingcitations
- 2021Hepatic steatosis detection using differential effective permittivitycitations
- 2020Wearable electromagnetic belt for steatotic liver detection using multivariate energy statisticscitations
- 2020Implantable sensor for detecting changes in the loss tangent of cerebrospinal fluidcitations
- 2019Compact implantable antennas for the cerebrospinal fluid monitoringcitations
- 2019Compact unidirectional conformal antenna based on flexible high permittivity custom-made substrate for wearable wideband electromagnetic head imaging systemcitations
- 2018Fabrication and characterization of flexible polymer iron oxide composite substrate for the imaging antennas of wearable head imaging systemscitations
- 2017Closed-form equation to estimate the dielectric properties of biological tissues as a function of agecitations
- 2017Skin tissue characterization of canine at microwave and millimeter-wave frequencies
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article
Hepatic steatosis detection using differential effective permittivity
Abstract
Objective: Hepatic Steatosis is a disorder with high prevalence among obese people. Traditional imaging modalities are more common in hepatic steatosis diagnosis, but they are not suitable for monitoring or treatment evaluation. This study aims at developing a new technique suitable for electromagnetic (EM) tool in the microwave band to differentiate steatotic from non-steatotic liver. Methods: A differential permittivity estimation method for hepatic steatosis detection is proposed. First, the effective permittivity of the right side of the torso is estimated based on the phase difference of electromagnetic waves traveling along symmetric paths within the torso. Then, permittivity modeling and statistical frequency selection are performed to model the estimated values and to extract reliable frequency samples. Finally, the percentage of the difference between the permittivity of the left and right sides of the torso is calculated over the selected samples. Results: The effectiveness of the proposed method is validated using simulated signals and phantom measurements. The analyzed results reveal higher contrast between the average permittivity of the left and right sides of the torso for cases with hepatic steatosis (average contrast of 29.2.