Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/2325
PIRA download icon_1.1View/Download Full Text
Title: A novel noncontact ultrasound indentation system for measurement of tissue material properties using water jet compression
Authors: Lu, MH
Zheng, YP 
Huang, QH
Issue Date: Jun-2005
Source: Ultrasound in medicine and biology, June 2005, v. 31, no. 6, p. 817-826
Abstract: This study is aimed to develop a novel noncontact ultrasonic indentation system for measuring quantitative mechanical properties of soft tissues, which are increasingly important for tissue assessment and characterization. The key idea of this method is to use a water jet as an indenter to compress the soft tissue while at the same time as a medium for an ultrasound beam to propagate through. The use of water jet indentation does not require a rigid compressor in front of the focused high frequency ultrasound transducer to compress the tissue, so that the additional attenuation caused by the rigid compressor and the strong echoes reflected from its surfaces can be avoided. The indentation deformation was estimated from the ultrasound echoes using a cross-correlation algorithm and the indentation force was calculated from the water pressure measured inside the water pipe. Experiments were performed on uniform tissue-mimicking phantoms with different stiffness. The Young’s moduli and Poisson’s ratios of these phantoms were measured using a uniaxial ultrasound compression system. The ratio of the indentation pressure to the tissue relative deformation was obtained from the water indentation. This ratio was well correlated with the Young’s modulus (r = 0.87). The results also demonstrated that the water indentation approach could differentiate materials with different stiffness in a combined phantom (288 kPa and 433 kPa). This novel noncontact water indentation approach could be potentially used for the measurement of the elasticity of small samples and with a fast scanning speed.
Keywords: Ultrasound
High-frequency ultrasound
Indentation
Ultrasound indentation
Nanoindentation
Noncontact
Tissue
Water jet
Publisher: Elsevier
Journal: Ultrasound in medicine and biology 
ISSN: 0301-5629
EISSN: 1879-291X
DOI: 10.1016/j.ultrasmedbio.2004.12.023
Rights: Ultrasound in Medicine & Biology © 2005 World Federation for Ultrasound in Medicine & Biology. The journal web site is located at http://www.sciencedirect.com.
Appears in Collections:Journal/Magazine Article

Files in This Item:
File Description SizeFormat 
Lu et al UMB 2005 Noncontact ultrasound indentation.pdfPre-published version499.89 kBAdobe PDFView/Open
Open Access Information
Status open access
File Version Final Accepted Manuscript
Access
View full-text via PolyU eLinks SFX Query
Show full item record

Page views

177
Last Week
0
Last month
Citations as of Mar 17, 2024

Downloads

240
Citations as of Mar 17, 2024

SCOPUSTM   
Citations

37
Last Week
0
Last month
0
Citations as of Mar 14, 2024

WEB OF SCIENCETM
Citations

29
Last Week
0
Last month
0
Citations as of Mar 14, 2024

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.