Detection of contrast objects inside biological media by near-field microwave diagnostics |
| |
Authors: | A N Reznik N V Yurasova |
| |
Institution: | (1) Institute of Physics of Microstructures, Russian Academy of Sciences, Nizhni Novgorod, 603950, Russia |
| |
Abstract: | Theoretical and experimental investigations demonstrate the prospects of near-field microwave location of malignant tumors
in biological tissue. The theoretical analysis is performed in terms of the theory of near-field location developed for layered
structures. The experimental verification of the theory is accomplished by sounding an aqueous medium with a controllable
permittivity. The tumor contrast is calculated based on the ideas of the dielectric properties of healthy and affected human
tissues. The reason for and the degree of background contrasts as applied to near-field measurements are studied experimentally.
An optimal measuring scheme for minimizing the masking effect of background contrasts is proposed. The 2D images of a tumor-simulating
contrast object immersed in the aqueous medium at different depths are obtained. The prospects of near-field diagnostics for
subsurface temperature measurement are discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|