Abstract
As a differential diagnosis technique of living soft tissues, we are developing ultrasonic strain measurement-based shear modulus reconstruction methods. Previously, we reported a method utilizing the typical value of Poisson's ratio. However, as reconstruction errors were confirmed due to the difference between the original value and the set value, we proposed a method to reconstruct Poisson's ratio as well. Furthermore, we proposed to reconstruct density as well to deal with dynamic deformation. In this report, to stabilize reconstruction, we propose to use mean normal stress as unknown. The effectiveness is verified through simulations.
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