New method of analysis of epigastric impedance measurement for assessment of gastric emptying and motility

Autor:	J. W. Lee, Michel Bouchoucha, K. Chitsakul, P.H. Cugnenc
Rok vydání:	2002
Předmět:	Mathematical optimization Materials science medicine.anatomical_structure Gastric emptying Focused Impedance Measurement Stomach medicine Curve fitting Time domain Method of analysis Envelope (mathematics) Electrical impedance Biomedical engineering
Zdroj:	CBMS
DOI:	10.1109/cbms.1991.128937
Popis:	Epigastric impedance changes for a stomach filled with 10%-glucose water were observed by passing a 100-kHz current through surface electrodes on the upper abdomen; a recording was obtained by two other electrodes. The characteristics of epigastric impedance changes are presented in terms of a predictive model. The gastric emptying curve was fitted numerically by a Weibull's model based on the Gauss-Newton algorithm programmed on a microcomputer. The inferior envelope for the noisy curve was separated for clear representation. A running spectrum analysis was used to determine the regular gastric activity and its variation. The numerical analysis in time domain gives a clear representation of the gastric emptying rate and some other parameters which can be used statistically in further clinical investigation and treatment. >
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2c13d5d65477f83b3956b6b29153c912 https://doi.org/10.1109/cbms.1991.128937 Zobrazit plný text záznamu