Integrating temporal information with a non-rigid method of motion correction for functional magnetic resonance images
Integrating temporal information with a non-rigid method of motion correction for functional magnetic resonance images
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DOI：
10.1016/j.imavis.2005.10.002
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发表时间：
2007-03-01
影响因子：
4.7
通讯作者：
Jenkinson, Mark
中科院分区：
文献类型：
--
作者：
Bannister, Peter R.;Brady, J. Michael;Jenkinson, Mark
针对FMRI数据中的对象运动伪影的问题的现有方法已经将刚体配准技术应用于非刚性问题。我们提出了一个模型，它可以占运动效果的非线性特性，已知的结果从用于形成这些图像的采集方法。该模型还有利于时间校正，这是需要补偿采集延迟的适当应用。基于该模型的实施结果表明，它是可能的，以纠正这些影响，导致准确的重新排列和定时校正。(c)2006 Elsevier B.V.保留所有权利。
Existing approaches to the problem of subject motion artefacts in FMRl data have applied rigid-body registration techniques to what is a non-rigid problem. We propose a model, which can account for the non-linear characteristics of movement effects, known to result from the acquisition methods used to form these images. The model also facilitates the proper application of temporal corrections, which are needed to compensate for acquisition delays. Results of an implementation based on this model reveal that it is possible to correct these effects, leading to accurate realignment and timing correction. (c) 2006 Elsevier B.V. All rights reserved.