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Shear Wave Imaging and Tissue Charac...

Partin, Alexander.

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Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques./
Author:	Partin, Alexander.
Description:	217 p.
Notes:	Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
Contained By:	Dissertation Abstracts International77-08B(E).
Subject:	Medical imaging. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10038678
ISBN:	9781339549255

Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques.
Partin, Alexander.

Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques. - 217 p.

Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.

Thesis (Ph.D.)--University of Rochester, 2016.

Certain diseases produce changes in the elastic properties of soft tissues. Conventional imaging modalities in some cases have poor performance in diagnosing these types of diseases. To overcome this problem, elastographic imaging techniques that focus on evaluating the elastic properties of tissues, i.e., tissue stiffness, have been developed in the past three decades. Soft tissues, however, inherently incorporate both elastic and viscous characteristics. Relatively few studies are available that examine the potential diagnostic contribution of tissue viscous properties, and the effect of tissue viscosity on the evaluation of tissue stiffness with existing elastographic techniques.

ISBN: 9781339549255Subjects--Topical Terms:

3172799
Medical imaging.

Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques.
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020 $a 9781339549255
035 $a (MiAaPQ)AAI10038678
035 $a AAI10038678
040 $a MiAaPQ $c MiAaPQ
100 1 $a Partin, Alexander. $3 3191263
245 1 0 $a Shear Wave Imaging and Tissue Characterization Using Vibration Elastographic Techniques.
300 $a 217 p.
500 $a Source: Dissertation Abstracts International, Volume: 77-08(E), Section: B.
500 $a Adviser: Kevin J. Parker.
502 $a Thesis (Ph.D.)--University of Rochester, 2016.
520 $a Certain diseases produce changes in the elastic properties of soft tissues. Conventional imaging modalities in some cases have poor performance in diagnosing these types of diseases. To overcome this problem, elastographic imaging techniques that focus on evaluating the elastic properties of tissues, i.e., tissue stiffness, have been developed in the past three decades. Soft tissues, however, inherently incorporate both elastic and viscous characteristics. Relatively few studies are available that examine the potential diagnostic contribution of tissue viscous properties, and the effect of tissue viscosity on the evaluation of tissue stiffness with existing elastographic techniques.
520 $a The main goal of this dissertation is to contribute to the development of elastography imaging for characterizing the viscoelastic properties of soft tissues with a particular focus on liver tissue. The crawling waves and vibration transient sonoelastography imaging techniques have been investigated in this thesis and applied to tissue-mimicking phantoms and liver specimens. Both techniques employ mechanical vibration sources to induce shear waves in tissue and an ultrasound imaging system to track and display the shear wave propagation.
520 $a The crawling waves imaging technique, which generates planar shear wave interference in tissues, is implemented on ex vivo mouse and rat livers with various degrees of fat concentration. Based on the experiments, higher amounts of triglyceride fats in animal liver specimens result in increased shear speed dispersion slope. A modified configuration of the crawling waves experimental setup and the local shear speed estimation algorithm are proposed which are more suitable for in vivo applications. This method is applied to homogeneous and heterogeneous phantoms, and ex vivo human liver.
520 $a The vibration transient sonoelastography imaging technique is also introduced. This technique is implemented with an ultrasound system with high frame rate acquisition capabilities. A processing algorithm is proposed for mapping the local shear speed in biomaterials. This technique is validated against the crawling waves technique and implemented on homogeneous and heterogeneous phantoms, and ex vivo bovine liver.
590 $a School code: 0188.
650 4 $a Medical imaging. $3 3172799
650 4 $a Electrical engineering. $3 649834
650 4 $a Biomedical engineering. $3 535387
690 $a 0574
690 $a 0544
690 $a 0541
710 2 $a University of Rochester. $b Engineering and Applied Sciences. $3 3176085
773 0 $t Dissertation Abstracts International $g 77-08B(E).
790 $a 0188
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10038678