Cortical surface strain estimation using stereovision.
Cortical surface strain estimation using stereovision.
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DOI：
10.1007/978-3-642-23623-5_52
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Paulsen, Keith D.
中科院分区：
文献类型：
--
作者：
Ji, Songbai;Fan, Xiaoyao;Roberts, David W.;Paulsen, Keith D.
We present a completely noninvasive technique to estimate soft tissue surface strain by differentiating three-dimensional displacements obtained from optical flow motion tracking using stereo images. The implementation of the strain estimation algorithm was verified with simulated data and its application was illustrated in three open cranial neurosurgical cases, where cortical surface strain induced by arterial blood pressure pulsation was evaluated. Local least squares smoothing was applied to the displacement field prior to strain estimation to reduce the effect of noise during differentiation. Maximum principal strains (ε 1) of up to 7% were found in the exposed cortical area on average, and the largest strains (up to ~18%) occurred near the craniotomy rim with the majority of ε1 perpendicular to the boundary, indicating relative stretching along this direction. The technique offers a new approach for soft tissue strain estimation for the purpose of biomechanical characterization.
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DOI：
10.1007/978-3-540-24673-2_3
发表时间：
2004-01-01
期刊：
COMPUTER VISION - ECCV 2004, PT 4
影响因子：
--
作者：
Brox, T;Bruhn, A;Weickert, J
通讯作者：
Weickert, J
DOI：
10.1109/titb.2009.2025373
发表时间：
2009-11-01
影响因子：
--
作者：
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通讯作者：
Jannin, Pierre
DOI：
10.1115/1.2948416
发表时间：
2008-08
期刊：
Journal of biomechanical engineering
影响因子：
--
作者：
Girard MJ;Downs JC;Burgoyne CF;Suh JK
通讯作者：
Suh JK
影响因子：
10.6
作者：
Sun, H;Lunn, KE;Paulsen, KD
通讯作者：
Paulsen, KD