Abstract
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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