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Hook Effect on Electrical Bioimpedance Spectroscopy Measurements. Analysis, Compensation and Correction
University of Borås, School of Engineering.
2009 (English)Independent thesis Advanced level (degree of Master (One Year))Student thesis
Abstract [en]

Nowadays, the Electrical Bioimpedance (EBI) measurements have become a common practice as they are useful for different clinical applications. EBI technology and EBI measurement systems are relatively simple when compared to other type of medical instrumentation. But even in such simple measurement systems measurement artifact may occur. One of the most common artifacts present measurements is the Hook Effect, which is identifiable by the hook-alike deviation on the EBI data that it produces on the impedance plot. The Hook Effect influences typical EBI data analysis processes like Cole fitting process and the estimation of the Cole parameters, which are critical for several EBI applications. Therefore the Hook Effect must be corrected, compensated or removed before the any fitting process. With the goal of finding a reliable correction method the origin and the impact on the EBI measurement of the Hook Effect is studied in this thesis. The currently used Td compensation method is also studied and a new approach for compensation and correction is presented. The results indicate that the proposed method truly corrects the Hook Effect and that the methodology to select the correcting parameters is solid based on the origin of the Hook Effect and it is extracted from the EBI measurement it-self avoiding any external dependency.

Place, publisher, year, edition, pages
University of Borås/School of Engineering , 2009.
Series
Magisteruppsats
Keywords [en]
electrical bioimpedance spectroscopy, cole model, hook effect, signal analysis
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:hb:diva-19565Local ID: 2320/5418OAI: oai:DiVA.org:hb-19565DiVA, id: diva2:1311499
Available from: 2019-04-30 Created: 2019-04-30

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • en-GB
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  • fi-FI
  • nn-NO
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  • Other locale
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Output format
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