In-vivo measurement of swine myocardial resistivity

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dc.contributor.authorTsai, Jang Zern
dc.contributor.authorWill, James A.
dc.contributor.authorStelle, Scott Hubbard Van
dc.contributor.authorCao, Hong
dc.contributor.authorTungjitkusolmun, Supan
dc.contributor.authorChoy, Young Bin
dc.contributor.authorHaemmerich, Dieter
dc.contributor.authorVorperian, Vicken R.
dc.contributor.authorWebster, John G.
dc.date.accessioned2026-08-06T09:51:38Z
dc.date.available2026-08-06T09:51:38Z
dc.date.issued2002-04-30
dc.description.abstractWe used a four-terminal plunge probe to measure myocardial resistivity in two directions at three sites from the epicardial surface of eight open-chest pigs in-vivo at eight frequencies ranging from 1Hz to 1 MHz. We calibrated the plunge probe to minimize the error due to stray capacitance between the measured subject and ground. We calibrated the probe in saline solutions contained in a metal cup situated near the heart that had an electrical connection to the pig's heart. The mean of the measured myocardial resistivity was 319 Ω cm at 1 Hz down to 166 Ωcm at 1 MHz. Statistical analysis showed the measured myocardial resistivity of two out of eight pigs was significantly different from that of other pigs. The myocardial resistivity measured with the resistivity probe oriented along and across the epicardial fiber direction was significantly different at only one out of the eight frequencies. There was no significant difference in the myocardial resistivity measured at different sites.
dc.identifier.citationIEEE Transactions on Biomedical Engineering, 49(5), 472-483, 2002
dc.identifier.doi10.1109/10.995686
dc.identifier.issn00189294
dc.identifier.other2-s2.0-0036113810
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/570
dc.sourceIEEE Transactions on Biomedical Engineering
dc.subjectCalibration
dc.subjectFour-terminal
dc.subjectHeart
dc.subjectIn-vivo
dc.subjectLeakage current
dc.subjectMyocardium
dc.subjectPig
dc.subjectPlunge probe
dc.subjectProbe constant
dc.subjectResistivity
dc.subjectStray capacitance
dc.titleIn-vivo measurement of swine myocardial resistivity
dc.typeArticle

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