title: Effect of esophagus status and catheter configuration on multiple intraluminal impedance measurements.
abstract: Multiple intraluminal impedance measurement is used to investigate the esophagus condition. This procedure provides information about the esophagus status, reflux occurrence and clearance mechanism. This paper presents finite-element approximation of the forward problem of the catheter inside the esophagus, relating the real data obtained from multiple intraluminal impedance to the solution obtained from the finite-element approximation. Investigation of the effect of the esophagus status on the impedance, and the correlation between various factors that affect the impedance are presented. The results of this paper provide theoretical bases for relating the esophagus condition to the impedance waveforms.
authors.affiliation: Electronics Engineering Department, Hijjawi Faculty for Eng. Tech., Yarmouk University, Irbid, Jordan.
authors.forename: Awad
authors.initials: A
authors.lastname: Al-Zaben
authors.forename: V
authors.initials: V
authors.lastname: Chandrasekar
mesh_terms: D002404:Catheterization / Q000295:instrumentation* / Q000379:methods*; D003198:Computer Simulation; D017076:Computer-Aided Design; D003936:Diagnosis, Computer-Assisted / Q000379:methods*; D017097:Electric Impedance; D004867:Equipment Design; D019544:Equipment Failure Analysis; D004947:Esophagus / Q000502:physiology*; D006801:Humans; D008954:Models, Biological; D010992:Plethysmography, Impedance / Q000295:instrumentation* / Q000379:methods*