Quantitative Imaging of Young’s Modulus of Soft Tissues from Ultrasound Water Jet Indentation : A Finite Element Study
Joint Authors
Lu, Min-Hua
Lu, Yin
Mao, Rui
Wang, Tian-Fu
Chen, Si-Ping
Liu, Zheng
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-6, 6 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-08-15
Country of Publication
Egypt
No. of Pages
6
Main Subjects
Abstract EN
Indentation testing is a widely used approach to evaluate mechanical characteristics of soft tissues quantitatively.
Young’s modulus of soft tissue can be calculated from the force-deformation data with known tissue thickness and Poisson’s ratio using Hayes’ equation.
Our group previously developed a noncontact indentation system using a water jet as a soft indenter as well as the coupling medium for the propagation of high-frequency ultrasound.
The novel system has shown its ability to detect the early degeneration of articular cartilage.
However, there is still lack of a quantitative method to extract the intrinsic mechanical properties of soft tissue from water jet indentation.
The purpose of this study is to investigate the relationship between the loading-unloading curves and the mechanical properties of soft tissues to provide an imaging technique of tissue mechanical properties.
A 3D finite element model of water jet indentation was developed with consideration of finite deformation effect.
An improved Hayes’ equation has been derived by introducing a new scaling factor which is dependent on Poisson’s ratios v, aspect ratio a/h (the radius of the indenter/the thickness of the test tissue), and deformation ratio d/h.
With this model, the Young’s modulus of soft tissue can be quantitatively evaluated and imaged with the error no more than 2%.
American Psychological Association (APA)
Lu, Min-Hua& Mao, Rui& Lu, Yin& Liu, Zheng& Wang, Tian-Fu& Chen, Si-Ping. 2012. Quantitative Imaging of Young’s Modulus of Soft Tissues from Ultrasound Water Jet Indentation : A Finite Element Study. Computational and Mathematical Methods in Medicine،Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-513156
Modern Language Association (MLA)
Lu, Min-Hua…[et al.]. Quantitative Imaging of Young’s Modulus of Soft Tissues from Ultrasound Water Jet Indentation : A Finite Element Study. Computational and Mathematical Methods in Medicine No. 2012 (2012), pp.1-6.
https://search.emarefa.net/detail/BIM-513156
American Medical Association (AMA)
Lu, Min-Hua& Mao, Rui& Lu, Yin& Liu, Zheng& Wang, Tian-Fu& Chen, Si-Ping. Quantitative Imaging of Young’s Modulus of Soft Tissues from Ultrasound Water Jet Indentation : A Finite Element Study. Computational and Mathematical Methods in Medicine. 2012. Vol. 2012, no. 2012, pp.1-6.
https://search.emarefa.net/detail/BIM-513156
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-513156