Effect of esophagus status and catheter configuration on multiple intraluminal impedance measurements

被引：13

作者：

Al-Zaben, A ^{[1
]}

Chandrasekar, V

机构：

[1] Yarmouk Univ, Dept Elect Engn, Hijjawi Fac Eng Tech, Irbid, Jordan

[2] Colorado State Univ, Ft Collins, CO 80524 USA

来源：

PHYSIOLOGICAL MEASUREMENT | 2005年 / 26卷 / 03期

关键词：

intraluminal impedance; reflux patterns; esophagus condition; finite element of intraluminal impedance;

D O I：

10.1088/0967-3334/26/3/008

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

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.

引用

页码：229 / 238

页数：10

共 9 条

[1]

Al-Zaben A, 2004, TECH PAPERS ISA, V449, P168

[2] Computation of intraluminal impedance [J].

Al-Zaben, A ;

Chandrasekar, V .

PHYSIOLOGICAL MEASUREMENT, 2004, 25 (01) :61-70

[3] ELECTRODE MODELS FOR ELECTRIC-CURRENT COMPUTED-TOMOGRAPHY [J].

CHENG, KS ;

ISAACSON, D ;

NEWELL, JC ;

GISSER, DG .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1989, 36 (09) :918-924

[4] The dielectric properties of biological tissues .2. Measurements in the frequency range 10 Hz to 20 GHz [J].

Gabriel, S ;

Lau, RW ;

Gabriel, C .

PHYSICS IN MEDICINE AND BIOLOGY, 1996, 41 (11) :2251-2269

[5] The dielectric properties of biological tissues .3. Parametric models for the dielectric spectrum of tissues [J].

Gabriel, S ;

Lau, RW ;

Gabriel, C .

PHYSICS IN MEDICINE AND BIOLOGY, 1996, 41 (11) :2271-2293

[6] SPECIFIC RESISTANCE OF BIOLOGICAL MATERIAL-A COMPENDUM OF DATA FOR BIOMEDICAL ENGINEER AND PHYSIOLOGIST [J].

GEDDES, LA ;

BAKER, LE .

MEDICAL & BIOLOGICAL ENGINEERING, 1967, 5 (03) :271-&

[7]

KLEINERMANN F, 1999, 1 WORLD C IND PROC T

[8] Esophageal impedance monitoring: The ups and downs of a new test [J].

Shay, S .

AMERICAN JOURNAL OF GASTROENTEROLOGY, 2004, 99 (06) :1020-1022

[9]

Shen L.C., 1995, APPL ELECTROMAGNETIS, VThird

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