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The Determination of Absorption and Reduced Scattering Coefficients of Optical Phantoms Using a Frequency-Domain Multi-Distance Method in a Non-contact MannerBAL, U.   , UTZINGER, U. , BAL, A. , MORAL, O. T. |
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Author keywords
absorption, biophotonics, optical sensors, optoelectronic devices, spectroscopy
References keywords
optical(12), biomed(12), properties(11), spectroscopy(9), infrared(9), frequency(8), domain(7), measurements(6), measurement(6), scattering(5)
Blue keywords are present in both the references section and the paper title.
About this article
Date of Publication: 2020-05-31
Volume 20, Issue 2, Year 2020, On page(s): 3 - 10
ISSN: 1582-7445, e-ISSN: 1844-7600
Digital Object Identifier: 10.4316/AECE.2020.02001
Web of Science Accession Number: 000537943500001
SCOPUS ID: 85087446239
Abstract
A non-contact optical system has been designed to determine the absorption and reduced scattering coefficients of optical phantoms. The frequency-domain multi-distance method, which allows an estimation of optical properties in biological tissue uses the phase and intensity of radio frequency modulated light. The proposed design has been evaluated with optical phantoms. Estimated values for an absorption coefficient equal to 1 cm-1 are 0.795, 0.690, 0.670 and 0.613 cm-1 for wavelengths of 658 nm, 705 nm, 785 nm and 833 nm, respectively and for a reduced scattering coefficient equal to 22 cm-1, the estimated values are 19.876, 18.845, 17.134 and 17.927 cm-1. It has been concluded that this novel non-contact design can be used to determine the absorption and reduced scattering coefficients of optical phantoms. This system is the first step in medical equipment that may be used to measure absolute quantification of HbO, Hb, HbCO and HbMet concentrations in a contactless manner. Current oximeters with hemoglobin measurement capability require contact between the sensor and the skin. These oximeters have drawbacks when measuring child patients with asthma, bronchiolitis and bronchopneumonia. Currently it is not possible to assess oxygenation in open wounds. Therefore, it is worthwhile to develop a non-contact oximeter. |
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Faculty of Electrical Engineering and Computer Science
Stefan cel Mare University of Suceava, Romania
All rights reserved: Advances in Electrical and Computer Engineering is a registered trademark of the Stefan cel Mare University of Suceava. No part of this publication may be reproduced, stored in a retrieval system, photocopied, recorded or archived, without the written permission from the Editor. When authors submit their papers for publication, they agree that the copyright for their article be transferred to the Faculty of Electrical Engineering and Computer Science, Stefan cel Mare University of Suceava, Romania, if and only if the articles are accepted for publication. The copyright covers the exclusive rights to reproduce and distribute the article, including reprints and translations.
Permission for other use: The copyright owner's consent does not extend to copying for general distribution, for promotion, for creating new works, or for resale. Specific written permission must be obtained from the Editor for such copying. Direct linking to files hosted on this website is strictly prohibited.
Disclaimer: Whilst every effort is made by the publishers and editorial board to see that no inaccurate or misleading data, opinions or statements appear in this journal, they wish to make it clear that all information and opinions formulated in the articles, as well as linguistic accuracy, are the sole responsibility of the author.