Elastic modulus imaging: On the uniqueness and nonuniqueness of the elastography inverse problem in

Elastic modulus imaging: On the uniqueness and nonuniqueness of the elastography inverse problem in
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弹性模量成像:论弹性成像反问题的唯一性和非唯一性

DOI:
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发表时间:
2004
期刊:
影响因子:
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通讯作者:
N. Gokhale
N. Gokhale
中科院分区:
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文献类型:
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作者:
P. Barbone;N. Gokhale

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我们研究了与弹性模量成像相关的二维反问题的 N 场推广的唯一性:给定不可压缩弹性材料中的 N 个线性独立位移场,确定剪切模量。我们证明,对于标准情况,N=1,通解包含两个任意函数,必须指定这些函数才能使解唯一。在实践中,评估必要功能所需的数据是不可能获得的。另一方面,对于 N=2,通解最多包含四个任意常数,因此只需很少的数据即可找到唯一解。对于 N=4,通解仅包含一个任意常数。我们的结果适用于准静态和动态变形。
We examine the uniqueness of an N-field generalization of a 2D inverse problem associated with elastic modulus imaging: given?N?linearly independent displacement fields in an incompressible elastic material, determine the shear modulus. We show that for the standard case, N=1, the general solution contains two arbitrary functions which must be prescribed to make the solution unique. In practice, the data required to evaluate the necessary functions are impossible to obtain. For N=2, on the other hand, the general solution contains at most four arbitrary constants, and so very few data are required to find the unique solution. For N=4, the general solution contains only one arbitrary constant. Our results apply to both quasistatic and dynamic deformations.
DOI: 10.1126/science.7569924
发表时间: 1995-09-29
期刊: SCIENCE
影响因子: 56.9
作者:
MUTHUPILLAI, R;LOMAS, DJ;EHMAN, RL
通讯作者: EHMAN, RL
DOI: 10.1016/s0301-5629(98)00099-4
发表时间: 1998-11-01
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通讯作者: Pennanen, MF
DOI: 10.1016/s0301-5629(98)00184-7
发表时间: 1999-05-01
影响因子: 2.9
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通讯作者: Hazle, JD