Error analysis of tissue resistivity measurement

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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 identified the error sources in a system for measuring tissue resistivity at eight frequencies from 1 Hz to 1 MHz using the four-terminal method. We expressed the measured resistivity with an analytical formula containing all error terms. We conducted practical error measurements with in-vivo and bench-top experiments. We averaged errors at all frequencies for all measurements. The standard deviations of error of the quantization error of the 8-bit digital oscilloscope with voltage averaging, the nonideality of the circuit, the in-vivo motion artifact and electrical interference combined to yield an error of ±1.19%. The dimension error in measuring the syringe tube for measuring the reference saline resistivity added ±1.32% error. The estimation of the working probe constant by interpolating a set of probe constants measured in reference saline solutions added ±0.48% error. The difference in the current magnitudes used during the probe calibration and that during the tissue resistivity measurement caused ±0.14% error. Variation of the electrode spacing, alignment, and electrode surface property due to the insertion of electrodes into the tissue caused ±0.61% error. We combined the above errors to yield an overall standard deviation error of the measured tissue resistivity of ±1.96%.
dc.identifier.citationIEEE Transactions on Biomedical Engineering, 49(5), 484-494, 2002
dc.identifier.doi10.1109/10.995687
dc.identifier.issn00189294
dc.identifier.other2-s2.0-0036106121
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/571
dc.sourceIEEE Transactions on Biomedical Engineering
dc.subjectCalibration
dc.subjectElectrode
dc.subjectError analysis
dc.subjectError measurement
dc.subjectFour terminals
dc.subjectNoise measurement
dc.subjectProbe constant
dc.subjectTissue resistivity
dc.titleError analysis of tissue resistivity measurement
dc.typeArticle

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