Influence of changing peripheral geometry on electrical impedance tomography measurements

被引：26

作者：

Gersing, E

Hofmann, B

Osypka, M

机构：

[1] Inst. Physiol. and Pathophysiology, University of Goettingen, D-37073, Goettingen

来源：

MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 1996年 / 34卷 / 05期

关键词：

deformation; impedance; impedance tomography; peripheral geometry; source of error;

D O I：

10.1007/BF02520005

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

Changes in the peripheral geometry of the cross-section of the object under investigation have been observed during electrical impedance tomography (EIT) measurements. An experiment was conducted to gain a better insight into the impact of an altered external shape on the generated EIT image. The experiment used a cylindrical tank filled with a saline solution. EIT measurements were performed with a multi-frequency tomograph, applying a frequency of 5 kHz. The tank cross-section was progressively deformed elliptically, applying a corresponding radial force on the shell of the elastic tank. Changes in impedance values were found to not only depend on the deformation exerted, but also on the properties of the algorithm used for image reconstruction.

引用

页码：359 / 361

页数：3

共 5 条

[1] ADLER A, 1994, PROCEEDINGS OF THE 16TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY - ENGINEERING ADVANCES: NEW OPPORTUNITIES FOR BIOMEDICAL ENGINEERS, PTS 1&2, P534, DOI 10.1109/IEMBS.1994.411917
[2] [Anonymous], ELECT IMPEDANCE TOMO
[3] EIT USING MAGNITUDE AND PHASE IN AN EXTENDED FREQUENCY-RANGE
GERSING, E
OSYPKA, M
[J]. PHYSIOLOGICAL MEASUREMENT, 1994, 15 : A21 - A28
[4] HEIMBACH M, 1990, ELECT IMPEDANCE TOMO, P87
[5] WEBSTER JG, 1990, ELECT IMPEDANCE TOMO, P21

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