Shear-wave imaging of viscoelasticity using local impulse response identification

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Abstract

Imaging technologies that allow assessment of the elastic properties of soft tissue provide clinicians with an important asset for several diagnostic applications. A quantitative measure of stiffness can be obtained by shear-wave (SW) elasticity imaging, a method that uses acoustic radiation force to produce laterally-propagating shear waves that can be tracked to obtain the velocity, which in turn is related to the shear modulus. If one considers the medium to be purely elastic, its local shear modulus can be estimated by determining the local SW velocity. However, this assumption does not hold for many tissue types, whenever the shear viscosity plays an important role. In fact, there is increasing evidence that viscosity itself could be an important marker for malignancy [1]. In this work, we therefore aim at providing a joint local estimate of tissue elasticity and viscosity based on SW elastography.

Original languageEnglish
Title of host publication2017 IEEE International Ultrasonics Symposium, IUS 2017, 06-09 Sept 2017
Place of PublicationPiscataway
PublisherIEEE Computer Society
Number of pages1
ISBN (Electronic)9781538633830
ISBN (Print)978-1-5386-3382-3
DOIs
Publication statusPublished - 31 Oct 2017
Event2017 IEEE International Ultrasonics Symposium (IUS 2017) - e Omni Shoreham Hotel, Washington, United States
Duration: 6 Sep 20179 Sep 2017
http://ewh.ieee.org/conf/ius/2017/

Conference

Conference2017 IEEE International Ultrasonics Symposium (IUS 2017)
Abbreviated titleIUS 2017
CountryUnited States
CityWashington
Period6/09/179/09/17
Internet address

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