Patent ID: 7946180

Claim:
An elasticity and visco-elasticity constants measurement apparatus comprising: storage means for storing at least one of strain tensor data, strain rate tensor data and acceleration vector data measured in a ROI (reagion of interest) set in a target; and calculating means for calculating at least one of elastic constants, visco elastic constants and density of an arbitrary point within the ROI on the basis of at least one of the measured strain tensor data, strain rate tensor data and acceleration vector data; wherein the calculating means numerically obtains at least one of the elastic constants, visco elastic constants and density on the basis of at least one of a ratio of strains, a ratio of strain rates, and first order partial differential equations representing a relation between (i) at least one of the elastic constants, visco elastic constants and density and (ii) at least one of the strain tensor data, strain rate tensor data and acceleration vector data.