An Inverse Problem Approach to the Estimation of Volume Change

An Inverse Problem Approach to the Estimation of Volume Change
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体积变化估计的反问题方法

DOI:
10.1007/11566489_76
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发表时间:
2005
期刊:
Medical image computing and computer-assisted intervention : MICCAI ... International Conference on Medical Image Computing and Computer-Assisted Intervention
影响因子:
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通讯作者:
Nick C Fox
Nick C Fox
中科院分区:
--
文献类型:
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作者:
M. Schweiger;Oscar Camara;W. Crum;E. Lewis;J. Schnabel;S. Arridge;D. Hill;Nick C Fox

文献摘要

被引文献

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我们提出了一种新的技术,用于确定逐个结构的体积变化,使用反问题方法。给定一个预先标记的大脑和不同时间点的一系列图像,我们从图像数据中生成有限元网格,并在每个结构的基础上通过未知的扩展系数来模拟体积变化。然后,我们可以使用反问题优化技术确定每个感兴趣的结构中的体积变化。该方法已用模拟数据和临床数据进行了检验。结果表明,所提出的技术可以被视为体积变化估计的一种替代方法。
We present a new technique for determining structure-by-structure volume changes, using an inverse problem approach. Given a pre-labelled brain and a series of images at different time-points, we generate finite element meshes from the image data, with volume change modelled by means of an unknown coefficient of expansion on a per-structure basis. We can then determine the volume change in each structure of interest using inverse problem optimization techniques. The proposed method has been tested with simulated and clinical data. Results suggest that the presented technique can be seen as an alternative for volume change estimation.