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System and method for local estimation of nonlinear tissue elasticity with acoustic radiation force
System and method for local estimation of nonlinear tissue elasticity with acoustic radiation force
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机译:利用声辐射力局部估计非线性组织弹性的系统和方法
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摘要
Ultrasound system and method configured to locally determine a parameter of nonlinear tissue elasticity by monitoring shear wave propagating through the tissue. The shear wave is caused by an acoustic radiation force (ARF) which is applied to the tissue by ultrasound irradiation locally, in a focal region of the ultrasound beam and which is a function of the intensity of ultrasound irradiation, its time rate, and the featured nonlinearity parameter. The irradiation does not involve a quasi-static compression of the tissue, thereby permitting local estimation of nonlinear tissue elasticity and circumventing the need to solve the global inverse problem.
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