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An Iterative Method for Estimating Nonlinear Elastic Constants of Tumor in Soft Tissue from Approximate Displacement Measurements
Joint Authors
Dastjerdi, Maryam Mehdizadeh
Fallah, Ali
Rashidi, Saeid
Source
Journal of Healthcare Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-01-06
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Objectives.
Various elastography techniques have been proffered based on linear or nonlinear constitutive models with the aim of detecting and classifying pathologies in soft tissues accurately and noninvasively.
Biological soft tissues demonstrate behaviors which conform to nonlinear constitutive models, in particular the hyperelastic ones.
In this paper, we represent the results of our steps towards implementing ultrasound elastography to extract hyperelastic constants of a tumor inside soft tissue.
Methods.
Hyperelastic parameters of the unknown tissue have been estimated by applying the iterative method founded on the relation between stress, strain, and the parameters of a hyperelastic model after (a) simulating the medium’s response to a sinusoidal load and extracting the tissue displacement fields in some instants and (b) estimating the tissue displacement fields from the recorded/simulated ultrasound radio frequency signals and images using the cross correlation-based technique.
Results.
Our results indicate that hyperelastic parameters of an unidentified tissue could be precisely estimated even in the conditions where there is no prior knowledge of the tissue, or the displacement fields have been approximately calculated using the data recorded by a clinical ultrasound system.
Conclusions.
The accurate estimation of nonlinear elastic constants yields to the correct cognizance of pathologies in soft tissues.
American Psychological Association (APA)
Dastjerdi, Maryam Mehdizadeh& Fallah, Ali& Rashidi, Saeid. 2019. An Iterative Method for Estimating Nonlinear Elastic Constants of Tumor in Soft Tissue from Approximate Displacement Measurements. Journal of Healthcare Engineering،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1175070
Modern Language Association (MLA)
Dastjerdi, Maryam Mehdizadeh…[et al.]. An Iterative Method for Estimating Nonlinear Elastic Constants of Tumor in Soft Tissue from Approximate Displacement Measurements. Journal of Healthcare Engineering No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1175070
American Medical Association (AMA)
Dastjerdi, Maryam Mehdizadeh& Fallah, Ali& Rashidi, Saeid. An Iterative Method for Estimating Nonlinear Elastic Constants of Tumor in Soft Tissue from Approximate Displacement Measurements. Journal of Healthcare Engineering. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1175070
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1175070