The aim of this paper is to present a new noninvasive method for investigating the homogeneity of the thyroid gland geometric model. The amplitude of reflected signal depends on the shape, size and homogeneity of the object investigated acoustic as well as the signal frequency emitted by generator. The eigenvalues proportional to the resonance frequencies are obtained by using finite element method applied to discretized form of differential equations of sound propagation. The resonance frequency variations of the first three eigenvalues were presented as functions of the geometrical model size and spheres with different radii, inside thyroid, which simulate malignant nodules.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.