Bioimpedance basics and phase angle fundamentals.
Bioielectrical impedance
Bioimpedance
Equivalent circuits
Modelling and simulation
Phase angle
Theoretical background
Journal
Reviews in endocrine & metabolic disorders
ISSN: 1573-2606
Titre abrégé: Rev Endocr Metab Disord
Pays: Germany
ID NLM: 100940588
Informations de publication
Date de publication:
06 2023
06 2023
Historique:
accepted:
19
12
2022
medline:
1
5
2023
pubmed:
8
2
2023
entrez:
7
2
2023
Statut:
ppublish
Résumé
Measurement of phase angle using bioimpedance analysis (BIA) has become popular as an index of so-called "cellular health". What precisely is meant by this term is not always clear but strong relationships have been found between cellular water status (the relative amounts of extra- and intracellular water), cell membrane integrity and cellular mass. Much of the current research is empirical observation and frequently pays little regard to the underlying biophysical models that underpin the BIA technique or attempts to provide mechanistic explanations for the observations. This brief review seeks to provide a basic understanding of the electrical models frequently used to describe the passive electrical properties of tissues with particular focus on phase angle. In addition, it draws attention to some practical concerns in the measurement of phase angle and notes the additional understanding that can be gained when phase angle are obtained with bioimpedance spectroscopy (BIS) rather than single frequency BIA (SFBIA) along with the potential for simulation modelling.
Identifiants
pubmed: 36749540
doi: 10.1007/s11154-022-09780-3
pii: 10.1007/s11154-022-09780-3
pmc: PMC10140124
doi:
Substances chimiques
Water
059QF0KO0R
Types de publication
Journal Article
Review
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
381-391Informations de copyright
© 2023. The Author(s).
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