Using electrical impedance to predict catheter-endocardial contact during RF cardiac ablation

Simple item page
dc.contributor.authorCao, Hong
dc.contributor.authorTungjitkusolmun, Supan
dc.contributor.authorChoy, Young Bin
dc.contributor.authorTsai, Jang Zern
dc.contributor.authorVorperian, Vicken R.
dc.contributor.authorWebster, John G.
dc.date.accessioned2026-08-06T09:51:37Z
dc.date.available2026-08-06T09:51:37Z
dc.date.issued2002-02-26
dc.description.abstractDuring radio-frequency (RF) cardiac catheter ablation, there is little information to estimate the contact between the catheter tip electrode and endocardium because only the metal electrode shows up under fluoroscopy. We present a method that utilizes the electrical impedance between the catheter electrode and the dispersive electrode to predict the catheter tip electrode insertion depth into the endocardium. Since the resistivity of blood differs from the resistivity of the endocardium, the impedance increases as the catheter tip lodges deeper in the endocardium. In vitro measurements yielded the impedance-depth relations at 1, 10, 100, and 500 kHz. We predict the depth by spline curve interpolation using the obtained calibration curve. This impedance method gives reasonably accurate predicted depth. We also evaluated alternative methods, such as impedance difference and impedance ratio.
dc.identifier.citationIEEE Transactions on Biomedical Engineering, 49(3), 247-253, 2002
dc.identifier.doi10.1109/10.983459
dc.identifier.issn00189294
dc.identifier.other2-s2.0-0036174409
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/567
dc.sourceIEEE Transactions on Biomedical Engineering
dc.subjectAblation
dc.subjectBiomedical electrodes
dc.subjectBiomedical measurements
dc.subjectCardiovascular system
dc.subjectConductivity measurement
dc.subjectElectrodes
dc.subjectImpedance measurement
dc.subjectMeasurement
dc.titleUsing electrical impedance to predict catheter-endocardial contact during RF cardiac ablation
dc.typeArticle

Files

Collections

Research