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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/1979

Title: A novel method to obtain modulus image of soft tissues using ultrasound water jet indentation: A phantom study
Authors: Lu, Min-Hua
Zheng, Yong-Ping
Huang, Qing-Hua
Subjects: Articular cartilage
Elasticity imaging
Eelastography
Elastomicroscopy
High-frequency ultrasound
Modulus image
Tissue
Ultrasound indentation
Water jet
Issue Date: Jan-2007
Publisher: IEEE Engineering in Medicine and Biology Society
Citation: IEEE transactions on biomedical engineering, Jan. 2007, v. 54, no. 1, p. 114-121.
Abstract: The alteration of tissue stiffness is generally known to be associated with pathological changes. Ultrasound indentation is one of the methods that can be used to assess the mechanical properties of the soft tissues. It uses a flat-ended ultrasound transducer to directly contact the tissue to sense tissue deformation under an applied load. This paper introduced a novel noncontact ultrasound indentation system using water jet compression. The key idea was to utilize a water jet as the indenter as well as the coupling medium for propagation of the ultrasound beam. High frequency focused ultrasound (20 MHz) was used to measure the indentation deformation at a microscopic level. It has been demonstrated that the system could effectively assess the tissue-mimic phantoms with different stiffness. Water jet coupling allows the system to conduct C-scan on soft tissues rapidly and conveniently. By applying different pressures while taking C-scan sequences, the modulus images of the phantoms could be obtained based on the applied pressure and the phantom deformation and thickness. This paper presented the preliminary results on gel phantoms. The spatial resolution, the contrast resolution of the measurements and the reproducibility of the results were also discussed.
Description: DOI: 10.1109/TBME.2006.884646
Rights: © 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holders.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/1979
ISSN: 0018-9294
Appears in Collections:HTI Journal/Magazine Articles

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