ELECTRIC-CURRENT COMPUTED-TOMOGRAPHY AND EIGENVALUES

被引：96

作者：

GISSER, DG ^{[1
]}

ISAACSON, D ^{[1
]}

NEWELL, JC ^{[1
]}

机构：

[1] RENSSELAER POLYTECH INST,DEPT MATH,TROY,NY 12181

来源：

SIAM JOURNAL ON APPLIED MATHEMATICS | 1990年 / 50卷 / 06期

关键词：

D O I：

10.1137/0150096

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

In electric current computed tomography, patterns of currents or voltages are applied to electrodes on the surface of a body and the resulting voltages or current are measured. A reconstruction and display of an approximation to the impedance inside the body is then made based on these external measurements. It is shown how that the problems of choosing current patterns, electrode size and number can be studied in terms of the spectral properties of certain pseudodifferential operators. The proofs given here are simpler and more general than those in [IEEE Trans. Medical Imaging, 5 (1986), pp.91-95] and [Clin. Phys. Physiol. Meas. Suppl. A, (1987), pp.39-46].

引用

页码：1623 / 1634

页数：12

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