Article ; Online: A Versatile and Shelf-Stable Dielectric Coupling Medium for Microwave Imaging.
IEEE transactions on bio-medical engineering
2022 Volume 69, Issue 8, Page(s) 2701–2712
Abstract: Objective: To develop a new class of emulsions using a protein-based emulsifier as the coupling fluid for microwave imaging systems.: Methods: In this paper, we provide a theoretical basis for engineering shelf-stable dielectric fluids, a step-by- ... ...
| Abstract | Objective: To develop a new class of emulsions using a protein-based emulsifier as the coupling fluid for microwave imaging systems. Methods: In this paper, we provide a theoretical basis for engineering shelf-stable dielectric fluids, a step-by-step formulation method, and measurements of complex dielectric properties in the frequency range of 0.5-3 GHz, which can be applicable for many of the recent microwave imaging systems. Results: This medium was primarily designed for long-term stability while providing a controllable range of complex dielectric permittivities given different fractions of its constituents. Consequently, this emulsion shows dielectric stability in open air throughout a 7-day experiment and temperature insensitivity over the range of 0 Conclusions: This control over dielectric permittivity enables formulations that tune the background-to-target contrast to the linearizable regime of iterative inverse scattering algorithms. Accordingly, the emulsion conductivity can also be controlled and reduced to maintain the required signal-to-noise ratio within the dynamic range of the imaging system. The new formulation overcomes the practical challenges of engineering coupling fluids for microwave imaging systems, e.g., temporal stability, non-toxic, low sensitivity to temperature variation, and easy formulation from readily available and inexpensive materials. Significance: The achieved properties associated with this new fluid are of particular benefit to microwave imaging systems used in thermal therapy monitoring. |
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| MeSH term(s) | Diagnostic Imaging ; Electric Conductivity ; Emulsions ; Microwave Imaging ; Microwaves |
| Chemical Substances | Emulsions |
| Language | English |
| Publishing date | 2022-07-18 |
| Publishing country | United States |
| Document type | Journal Article ; Research Support, Non-U.S. Gov't |
| ZDB-ID | 160429-6 |
| ISSN | 1558-2531 ; 0018-9294 |
| ISSN (online) | 1558-2531 |
| ISSN | 0018-9294 |
| DOI | 10.1109/TBME.2022.3153003 |
| Database | MEDical Literature Analysis and Retrieval System OnLINE |
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