Electrodynamics of microwave near-field probing: Application to medical diagnostics

被引：30
|
作者：
Reznik, AN [1 ]
Yurasova, NV [1 ]
机构：
[1] Inst Phys Microstruct, Nizhnii Novgorod 603950, Russia
来源：
JOURNAL OF APPLIED PHYSICS | 2005年 / 98卷 / 11期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1063/1.2138798
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A theory for the near-field (NF) microwave diagnostics of planar-stratified media is developed based on the design of an equivalent NF probe circuit and the solution of the electrodynamical problem for the electromagnetic field of antenna in an inhomogeneous ambient medium. The theory has been verified experimentally by probing into water with controllable dielectric permittivity. A theoretical and experimental study into a possibility to locate contrast structures (malignant growths) within biological media by means of NF probing has been carried out. Detectable contrasts of a growth have been calculated depending on its dimensions and depth of occurrence. Two-dimensional images of a tumorlike contrast object have been obtained for different depths of the object submersion in water. A measurement technique reducing the masking effect of background fluctuations arising by probe contact with a pliant surface is proposed.
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页数：9
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