Tissue Viscoelasticity Imaging Using Vibration and Ultrasound Coupler Gel

Tissue Viscoelasticity Imaging Using Vibration and Ultrasound Coupler Gel
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使用振动和超声耦合凝胶进行组织粘弹性成像

DOI:
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发表时间:
2012
期刊:
影响因子:
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通讯作者:
T. Shiina
T. Shiina
中科院分区:
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文献类型:
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作者:
M. Yamakawa;T. Shiina

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在组织诊断中,弹性和粘度都是重要的指标。因此,我们提出了一种通过施加通常在弹性成像中执行的振动并使用具有已知粘弹性的超声偶联凝胶来评估组织粘弹性的方法。在该方法中,我们使用基于耦合器应变和组织应变的三个粘弹性参数:应变比作为弹性参数,相位差和归一化滞后环面积作为粘性参数。在琼脂模型实验中,利用这些粘弹性参数,我们能够估计模型的粘弹性分布。特别是,应变比和相位差对应变估计误差具有较强的鲁棒性。
In tissue diagnosis, both elasticity and viscosity are important indexes. Therefore, we propose a method for evaluating tissue viscoelasticity by applying vibration that is usually performed in elastography and using an ultrasound coupler gel with known viscoelasticity. In this method, we use three viscoelasticity parameters based on the coupler strain and tissue strain: the strain ratio as an elasticity parameter, and the phase difference and the normalized hysteresis loop area as viscosity parameters. In the agar phantom experiment, using these viscoelasticity parameters, we were able to estimate the viscoelasticity distribution of the phantom. In particular, the strain ratio and the phase difference were robust to strain estimation error.
DOI: 10.1118/1.2805258
发表时间: 2007-12-01
期刊: MEDICAL PHYSICS
影响因子: 3.8
作者:
Sridhar, Mallika;Insana, Michael F.
通讯作者: Insana, Michael F.
DOI: 10.1016/j.acra.2008.05.023
发表时间: 2008-12
期刊: ACADEMIC RADIOLOGY
影响因子: 4.8
作者:
Qiu, Yupeng;Sridhar, Mallika;Tsou, Jean K.;Lindfors, Karen K.;Insana, Michael F.
通讯作者: Insana, Michael F.