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Microwave studies of a poly vinyl acetate (PVA)‐based phantom for applications in medical imaging
Author(s) -
Bindu G.,
Thomas Vinu,
Lonappan Anil,
Aanandan C. K.,
Mathew K. T.
Publication year - 2006
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21300
Subject(s) - materials science , imaging phantom , microwave , graphite , vinyl acetate , dielectric , carbon black , composite material , carbon fibers , absorption (acoustics) , attenuation coefficient , polymer chemistry , optoelectronics , optics , polymer , natural rubber , composite number , physics , quantum mechanics , copolymer
Abstract A phantom that exhibits complex dielectric properties similar to low‐water‐content biological tissues over the electromagnetic spectrum of 2000–3000 MHz has been synthesized from carbon black, graphite powder, and poly vinyl acetate (PVA)‐based adhesive. The material overcomes various problems that are inherent in conventional phantoms such as decomposition and deterioration due to the invasion of bacteria or mold. The absorption coefficients of the material for various concentrations of carbon and graphite are studied. A combination of 50% poly‐vinyl‐acetate‐based adhesive, 20% carbon, and 30% graphite exhibits a high absorption coefficient, which suggests another application of the material as a good microwave absorber for the interior lining of tomographic chamber in microwave imaging. The cavity‐perturbation technique is adopted to study the dielectric properties of the material. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 180–183, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21300