Viscoelastic response (VisR)-derived relative elasticity and relative viscosity reflect tissue elasticity and viscosity: In silico and experimental demonstration in liver

Md Murad Hossain,Timothy Nichols,Elizabeth Merricks,Caterina Gallippi

internaltional ultrasonics symposium（2017）

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摘要

VisR ultrasound characterizes the viscoelastic properties of tissue by fitting acoustic radiation force (ARF)-induced displacements in the region of ARF excitation to a 1D mass-spring-damper (MSD) model. Viscosity and elasticity are found separately from each other but relative to the applied ARF amplitude. We refer to these parameters as `relative elasticity (RE)' and `relative viscosity (RV)'. We hypothesize that RE and RV linearly correlate to true elasticity and viscosity in tissue.

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关键词

viscoelastic response,relative elasticity,relative viscosity,tissue elasticity,VisR ultrasound,acoustic radiation force-induced displacements,ARF excitation,1D mass-spring-damper model,tissue viscosity,liver

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