A COMPARATIVE-STUDY OF SEVERAL EXCITING MAGNETIC-FIELDS FOR INDUCED CURRENT EIT

被引：11

作者：

GENCER, NG

IDER, YZ

机构：

[1] Dept. of Electr. and Electron. Eng., Middle East Tech. Univ., Ankara

来源：

PHYSIOLOGICAL MEASUREMENT | 1994年 / 15卷

关键词：

D O I：

10.1088/0967-3334/15/2A/007

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

In this study, the selection of coil configuration parameters (coil radius and coil centre shift) for induced current Err using circular coils is investigated . An alternative coil configuration is suggested, which produces approximately linear (spatially) magnetic fields in order to strengthen the currents in the central region. Injected current EIT, with Sheffield data collection protocol, and induced current EIT, With two different coil configurations, are compared with respect to singular-value patterns, sensitivity distributions and imaging performances. It is observed that for the proposed alternative coil configuration the measurements are more sensitive to inner region conductivity perturbations when compared to injected current EIT and induced current EIT using circular coils. The images obtained by induced current EIT are comparable to that obtained by injected current EIT.

引用

页码：A51 / A57

页数：7

共 8 条

[1]

Brown B H, 1987, Clin Phys Physiol Meas, V8 Suppl A, P91, DOI 10.1088/0143-0815/8/4A/012

[2]

EYUBOGLU BM, 1988, THESIS U SHEFFIELD

[3] ELECTRICAL-IMPEDANCE TOMOGRAPHY USING INDUCED AND INJECTED CURRENTS [J].

GENCER, NG ;

IDER, YZ ;

KUZUOGLU, M .

CLINICAL PHYSICS AND PHYSIOLOGICAL MEASUREMENT, 1992, 13 :95-99

[4]

GENCER NG, 1988, THESIS MIDDLE E TU

[5]

GENCER NG, 1993, THESIS MIDDLE E TU

[6] SINGULAR VALUE DECOMPOSITION AND LEAST SQUARES SOLUTIONS [J].

GOLUB, GH ;

REINSCH, C .

NUMERISCHE MATHEMATIK, 1970, 14 (05) :403-&

[7]

PURWIS WR, 1990, 12TH P ANN INT C IEE, P114

[8]

SCAIFE JM, 1990, 12TH P ANN INT C IEE, P116

← 1 →