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  Track density imaging (TDI): Validation of super resolution property

Calamante, F., Tournier, J.-D., Heidemann, R. M., Anwander, A., Jackson, G. D., & Conelly, A. (2011). Track density imaging (TDI): Validation of super resolution property. NeuroImage, 56(3), 1259-1266. doi:10.1016/j.neuroimage.2011.02.059.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-1BE6-A Version Permalink: http://hdl.handle.net/21.11116/0000-0002-B35A-F
Genre: Journal Article

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 Creators:
Calamante, Fernando, Author
Tournier, Jacques-Donald, Author
Heidemann, Robin M.1, Author              
Anwander, Alfred2, Author              
Jackson, Graeme D., Author
Conelly, Alan, Author
Affiliations:
1Department Neurophysics, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634550              
2Methods and Development Unit Cortical Networks and Cognitive Functions, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634557              

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Free keywords: Magnetic resonance imaging; Super resolution; White matter; Fibre tracking; Diffusion MRI
 Abstract: We have recently introduced a novel MRI methodology, so-called super resolution track-density imaging (TDI), which produces high-quality white matter images, with high spatial resolution and exquisite anatomical contrast not available from other MRI modalities. This method achieves super resolution by utilising the long-range information contained in the diffusion MRI fibre tracks. In this study, we validate the super resolution property of the TDI method by using in vivo diffusion MRI data acquired at ultra-high magnetic field strength (7 T), and in silico diffusion MRI data from a well-characterised numerical phantom. Furthermore, an alternative version of the TDI technique is described, which mitigates the track length weighting of the TDI map intensity. For the in vivo data, high-resolution diffusion images were down-sampled to simulate low-resolution data, for which the high-resolution images serve as a gold standard. For the in silico data, the gold standard is given by the known simulated structures of the numerical phantom. Both the in vivo and in silico data show that the structures that could be identified in the TDI maps only after using super resolution were consistent with the corresponding structures identified in the reference maps. This supports the claim that the structures identified by the super resolution step are accurate, thus providing further evidence for the important potential role of the super resolution TDI methodology in neuroscience.

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Language(s): eng - English
 Dates: 2011-01-192010-09-152011-02-172011-02-242011-06-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2011.02.059
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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 56 (3) Sequence Number: - Start / End Page: 1259 - 1266 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166