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SYSTEM AND METHOD FOR ACOUSTIC RADIATION FORCE CREEP-RECOVERY AND SHEAR WAVE PROPAGATION FOR ELASTICITY IMAGING

机译:用于弹性成像的声辐射力蠕变恢复和剪切波传播的系统和方法

摘要

A model-independent method for producing a viscoelastic tissue property metric using ultrasound is provided. A mechanical stress, such as an acoustic force, is applied to a tissue during a creep period using an ultrasound system to generate a creep response. Tissue displacement resulting from the applied acoustic force is measured during a recovery period following the creep period. From the tissue displacement measurements, a relative complex modulus is extracted, and a loss tangent is calculated based on extracted complex modulus. Using the calculated loss tangent, viscoelastic tissue property metrics may be calculated.
机译:提供了一种使用超声波产生粘弹性组织特性度量的模型无关方法。使用超声系统在蠕变期间将机械应力(例如声力)施加到组织,以生成蠕变响应。在蠕变期之后的恢复期中,测量由施加的声力引起的组织位移。从组织位移测量中,提取相对复数模量,并基于提取的复数模量计算损耗角正切。使用计算的损耗角正切,可以计算粘弹性组织性质度量。

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