scholarly journals Evaluation of electrical impedance spectroscopy as an adjunct to dermoscopy in short-term monitoring of atypical melanocytic lesions

2016 ◽  
Vol 6 (4) ◽  
Author(s):  
Hannah Ceder ◽  
Alexandra Sjoholm Hylen ◽  
Ann-Marie Wennberg Larko ◽  
John Paoli
Keyword(s):  
Impedance Spectroscopy ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy ◽  
Short Term ◽  
Melanocytic Lesions ◽  
Term Monitoring

scholarly journals Analysis of an electrical impedance spectroscopy system in short‐term digital dermoscopy imaging of melanocytic lesions

2017 ◽  
Vol 177 (5) ◽  
pp. 1432-1438 ◽  
Author(s):  
L. Rocha ◽  
S.W. Menzies ◽  
S. Lo ◽  
M. Avramidis ◽  
R. Khoury ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy ◽  
Short Term ◽  
Melanocytic Lesions ◽  
Spectroscopy System ◽  
Digital Dermoscopy

Towards Biofilm Spectroscopy – A Novel Microfluidic Approach for Characterizing Biofilm Subpopulation by Microwave-Based Electrical Impedance Spectroscopy

Frequenz ◽  
2018 ◽  
Vol 72 (3-4) ◽  
pp. 123-134
Author(s):  
Christiane Richter ◽  
Stefan Schneider ◽  
Bastian E. Rapp ◽  
Sönke Schmidt ◽  
Martin Schüßler ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Electrical Impedance ◽  
Microfluidic System ◽  
Electrical Impedance Spectroscopy ◽  
Dielectric Fluids ◽  
Microwave Engineering ◽  
Flow Through ◽  
Transmission Measurements ◽  
Term Monitoring

Abstract In this work three disciplines – microfluidics, microbiology and microwave engineering – are utilized to develop a system for analyzing subpopulations of biofilms and their reaction to antibiotic treatment. We present handling strategies to destabilize a biofilm inside a microfluidic system down to aggregate sizes of<10 µm2 as well as microfluidic structures for the flow-through filtration of the resulting cell suspensions. For the analysis of the cell populations by microwave electrical impedance spectroscopy, two novel calibration schemes are demonstrated to cover both, reflection as well as transmission measurements of dielectric fluids. The broadband calibration strategies are solely based on liquid standards and allow a precise long-term monitoring with a resolution up to ${\text{ }}\Delta \varepsilon = 6$  ‰, while the error is kept below $\Delta = 1.5$  ‰ at ${\ }5{\ }{\rm GHz}$ . Combining these three research topics therefore will open up new ways for analyzing biofilm effects.

Electrical Impedance Spectroscopy Estimation of Water Content in Leaves and Stems of White Birch (Betula platyphylla) Under Flooding Stress

2014 ◽  
Vol 49 (1) ◽  
pp. 105 ◽  
Author(s):  
Meng Yu ◽  
Gong Ruijuan ◽  
Di Bao ◽  
Xiang Diying ◽  
Zhang Gang ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Water Content ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy ◽  
Betula Platyphylla ◽  
White Birch ◽  
Flooding Stress

A Rapid Approach to Measure Extracted Chlorophyll-a from Lettuce Leaves using Electrical Impedance Spectroscopy

2021 ◽  
Vol 232 (2) ◽  
Author(s):  
Rakibul Islam Chowdhury ◽  
Rinku Basak ◽  
Khan Arif Wahid ◽  
Katy Nugent ◽  
Helen Baulch
Keyword(s):  
Impedance Spectroscopy ◽  
Chlorophyll A ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy

scholarly journals Study of Reduced Graphene Oxide Dispersions via Electrical Impedance Spectroscopy

2020 ◽  
Vol 28 ◽  
pp. 1679-1685
Author(s):  
Angeliki-Eirini Dimou ◽  
Ioanna Sakellariou ◽  
George M. Maistros ◽  
Nikolaos D. Alexopoulos
Keyword(s):  
Graphene Oxide ◽  
Impedance Spectroscopy ◽  
Reduced Graphene Oxide ◽  
Electrical Impedance ◽  
Electrical Impedance Spectroscopy ◽  
Reduced Graphene

scholarly journals Utilization of Electrical Impedance Spectroscopy and Image Classification for Non-Invasive Early Assessment of Meat Freshness

Sensors ◽  
2021 ◽  
Vol 21 (3) ◽  
pp. 1001
Author(s):  
Sooin Huh ◽  
Hye-Jin Kim ◽  
Seungah Lee ◽  
Jinwoo Cho ◽  
Aera Jang ◽  
...  
Keyword(s):  
Impedance Spectroscopy ◽  
Prediction Accuracy ◽  
Electrical Impedance ◽  
Thiobarbituric Acid ◽  
Electrical Impedance Spectroscopy ◽  
Plate Count ◽  
Gradient Boosting ◽  
Composition Analysis ◽  
Early Assessment ◽  
Relative Standard

This study presents a system for assessing the freshness of meat with electrical impedance spectroscopy (EIS) in the frequency range of 125 Hz to 128 kHz combined with an image classifier for non-destructive and low-cost applications. The freshness standard is established by measuring the aerobic plate count (APC), 2-thiobarbituric acid reactive substances (TBARS), and composition analysis (crude fat, crude protein, and moisture) values of the microbiological detection to represent the correlation between EIS and meat freshness. The EIS and images of meat are combined to predict the freshness with the Adaboost classification and gradient boosting regression algorithms. As a result, when the elapsed time of beef storage for 48 h is classified into three classes, the time prediction accuracy is up to 85% compared to prediction accuracy of 56.7% when only images are used without EIS information. Significantly, the relative standard deviation (RSD) of APC and TBARS value predictions with EIS and images datum achieves 0.890 and 0.678, respectively.

Electrical impedance spectroscopy for the characterization of skin barrier in atopic dermatitis

Allergy ◽  
2021 ◽  
Author(s):  
Arturo O. Rinaldi ◽  
Angelica Korsfeldt ◽  
Siobhan Ward ◽  
Daniel Burla ◽  
Anita Dreher ◽  
...  
Keyword(s):  
Atopic Dermatitis ◽  
Impedance Spectroscopy ◽  
Electrical Impedance ◽  
Skin Barrier ◽  
Electrical Impedance Spectroscopy

scholarly journals Electrical Impedance Spectroscopy as Electrical Biopsy for Monitoring Radiation Sequelae of Intestine in Rats

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Pei-Ju Chao ◽  
Eng-Yen Huang ◽  
Kuo-Sheng Cheng ◽  
Yu-Jie Huang
Keyword(s):  
Electrical Properties ◽  
Impedance Spectroscopy ◽  
Integrated Circuits ◽  
Electrical Impedance ◽  
Roc Analysis ◽  
Electrical Impedance Spectroscopy ◽  
Electrical Characteristics ◽  
Injury Score ◽  
Histological Changes ◽  
Radiation Sequelae

Electrical impedance is one of the most frequently used parameters for characterizing material properties. The resistive and capacitive characteristics of tissue may be revealed by electrical impedance spectroscopy (EIS) as electrical biopsy. This technique could be used to monitor the sequelae after irradiation. In this study, rat intestinal tissues after irradiation were assessed by EIS system based on commercially available integrated circuits. The EIS results were fitted to a resistor-capacitor circuit model to determine the electrical properties of the tissue. The variations in the electrical characteristics of the tissue were compared to radiation injury score (RIS) by morphological and histological findings. The electrical properties, based on receiver operation curve (ROC) analysis, strongly reflected the histological changes with excellent diagnosis performance. The results of this study suggest that electrical biopsy reflects histological changes after irradiation. This approach may significantly augment the evaluation of tissue after irradiation. It could provide rapid results for decision making in monitoring radiation sequelae prospectively.

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