Automatic fiber tractography from DTI and its validation

Vemuri, Baba C.; Chen, Y.; Rao, Murali; Wang, Z.; McGraw, Tim; Mareci, Thomas H.; Blackband, Stephen J.; Pj, Reier

doi:10.1109/isbi.2002.1029304

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…; Mori & Zhang, ) and has already been validated in this field (Vemuri et al. ; Gharabaghi et al. ).…”

Section: Introductionmentioning

confidence: 97%

“…One technique applied increasingly to determine muscle architecture is the diffusion tensor imaging (DTI) method (Reese et al 1995;van Doorn et al 1996;Oomens et al 2003;Heemskerk et al 2005;Sinha et al 2006;Noseworthy et al 2010;McMillan et al 2011). Originally applied in the area of neuroscience, this method was developed to reconstruct the orientation of nerve fibers in the brain (Gossl et al 2002;Masuya, 2003;Klose et al 2005;Mori & Zhang, 2006) and has already been validated in this field (Vemuri et al 2002;Gharabaghi et al 2007).…”

Section: Introductionmentioning

confidence: 99%

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Determination of three‐dimensional muscle architectures: validation of the DTI‐based fiber tractography method by manual digitization

et al. 2013

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In the last decade, diffusion tensor imaging (DTI) has been used increasingly to investigate three-dimensional (3D) muscle architectures. So far there is no study that has proved the validity of this method to determine fascicle lengths and pennation angles within a whole muscle. To verify the DTI method, fascicle lengths of m. soleus as well as their pennation angles have been measured using two different methods. First, the 3D muscle architecture was analyzed in vivo applying the DTI method with subsequent deterministic fiber tractography. In a second step, the muscle architecture of the same muscle was analyzed using a standard manual digitization system (MicroScribe MLX). Comparing both methods, we found differences for the median pennation angles (P < 0.001) but not for the median fascicle lengths (P = 0.216). Despite the statistical results, we conclude that the DTI method is appropriate to determine the global fiber orientation. The difference in median pennation angles determined with both methods is only about 1.2°(median pennation angle of MicroScribe: 9.7°; DTI: 8.5°) and probably has no practical relevance for muscle simulation studies. Determining fascicle lengths requires additional restriction and further development of the DTI method.

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“…; Mori & Zhang, ) and has already been validated in this field (Vemuri et al. ; Gharabaghi et al. ).…”

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Determination of three‐dimensional muscle architectures: validation of the DTI‐based fiber tractography method by manual digitization

et al. 2013

View full text Add to dashboard Cite

show abstract

“…For Gaussian diffusion d{u) = bu^Dn. Many models for smoothing and estimation the diffusion tensor D in DTI model (1.4) having the ability of preserving the positive definite, anisotropy, or directional property of the PE of D have been developed [178,260,313,633,660,812,813,838,864,872].…”

Section: Estimation Of a D C Profilesmentioning

confidence: 99%