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Super-resolution track-density imaging studies of mouse brain: Comparison to histology

The recently proposed track-density imaging (TDI) technique was introduced as a means to achieve super-resolution using diffusion MRI. This technique is able to increase the spatial resolution of the reconstructed images beyond the acquired MRI resolution by incorporating information from whole-brai... Full description

Journal Title: NeuroImage 2 January 2012, Vol.59(1), pp.286-296
Main Author: Calamante, Fernando
Other Authors: Tournier, Jacques-Donald , Kurniawan, Nyoman D. , Yang, Zhengyi , Gyengesi, Erika , Galloway, Graham J. , Reutens, David C. , Connelly, Alan
Format: Electronic Article Electronic Article
Language: English
Subjects:
2d
3d
Aca
Acp
Br
Cc
Cg
Cp
Cpu
Csd
Dec
Δ
Δ
Dhc
Ec
Eml
F
FA
Fi
Fmi
Fod
Fr
Gcc
Hb
Ic
Imd
Lo
Mfb
Ml
MS
Mt
Ns
Opt
Pb
Pf
Rgb
Sm
St
Str
Tc
Tdi
Te
Tr
ID: ISSN: 1053-8119 ; DOI: 10.1016/j.neuroimage.2011.07.014
Link: http://dx.doi.org/10.1016/j.neuroimage.2011.07.014
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recordid: sciversesciencedirect_elsevierS1053-8119(11)00775-0
title: Super-resolution track-density imaging studies of mouse brain: Comparison to histology
format: Article
creator:
  • Calamante, Fernando
  • Tournier, Jacques-Donald
  • Kurniawan, Nyoman D.
  • Yang, Zhengyi
  • Gyengesi, Erika
  • Galloway, Graham J.
  • Reutens, David C.
  • Connelly, Alan
subjects:
  • 2d
  • 3d
  • Aca
  • Acp
  • Br
  • Cc
  • Cg
  • Cp
  • Cpu
  • Csd
  • Dec
  • Δ
  • Δ
  • Dhc
  • Ec
  • Eml
  • F
  • FA
  • Fi
  • Fmi
  • Fod
  • Fr
  • Gcc
  • Hb
  • Ic
  • Ifod2
  • Imd
  • Lmax
  • Lmol
  • Lo
  • Mfb
  • Ml
  • MS
  • Mt
  • Ns
  • Opt
  • Pb
  • Pf
  • Rgb
  • Sm
  • St
  • Str
  • St Tdi
  • Tc
  • Tdi
  • Te
  • Tr
  • Magnetic Resonance Imaging
  • Super-Resolution
  • Mouse Brain
  • Diffusion Mri
  • Validation
  • Histology
ispartof: NeuroImage, 2 January 2012, Vol.59(1), pp.286-296
description: The recently proposed track-density imaging (TDI) technique was introduced as a means to achieve super-resolution using diffusion MRI. This technique is able to increase the spatial resolution of the reconstructed images beyond the acquired MRI resolution by incorporating information from whole-brain fibre-tracking results. It not only achieves super-resolution, but also provides very high anatomical contrast with a new MRI contrast mechanism. However, the anatomical information-content of this novel contrast mechanism has not yet been assessed. In this work, we perform such a study using diffusion MRI of ex vivo mouse brains acquired at 16.4T, to compare the results of the super-resolution TDI technique with histological staining (myelin and Nissl stains) in the same brains. Furthermore, a modified version of the directionally-encoded colour TDI map using short-tracks is introduced, which reduces the TDI intensity dynamic range, and therefore enhances the directionality colour-contrast. Good agreement was observed between structures visualised in the super-resolution TDI maps and in the histological sections, supporting the anatomical information-content of the images generated using the TDI technique. The results therefore show that the TDI methodology does provide meaningful and rich anatomical contrast, in addition to achieving super-resolution. Furthermore, this study is the first to show the application of TDI to mouse brain imaging: the high-resolution, high-quality images demonstrate the useful complementary information that can be achieved using super-resolution TDI. Highlights► Track-density imaging (TDI): method recently introduced to gain spatial-resolution. ► We assess the anatomical information-content of TDI using ex vivo mouse data. ► Modified directional-encoded color TDI method is described with enhanced contrast. ► Structures visualised in TDI maps consistent with those in histological sections. ► First study to show the application of super-resolution TDI to mouse brain imaging.
language: eng
source:
identifier: ISSN: 1053-8119 ; DOI: 10.1016/j.neuroimage.2011.07.014
fulltext: fulltext
issn:
  • 10538119
  • 1053-8119
url: Link


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titleSuper-resolution track-density imaging studies of mouse brain: Comparison to histology
creatorCalamante, Fernando ; Tournier, Jacques-Donald ; Kurniawan, Nyoman D. ; Yang, Zhengyi ; Gyengesi, Erika ; Galloway, Graham J. ; Reutens, David C. ; Connelly, Alan
ispartofNeuroImage, 2 January 2012, Vol.59(1), pp.286-296
identifierISSN: 1053-8119 ; DOI: 10.1016/j.neuroimage.2011.07.014
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descriptionThe recently proposed track-density imaging (TDI) technique was introduced as a means to achieve super-resolution using diffusion MRI. This technique is able to increase the spatial resolution of the reconstructed images beyond the acquired MRI resolution by incorporating information from whole-brain fibre-tracking results. It not only achieves super-resolution, but also provides very high anatomical contrast with a new MRI contrast mechanism. However, the anatomical information-content of this novel contrast mechanism has not yet been assessed. In this work, we perform such a study using diffusion MRI of ex vivo mouse brains acquired at 16.4T, to compare the results of the super-resolution TDI technique with histological staining (myelin and Nissl stains) in the same brains. Furthermore, a modified version of the directionally-encoded colour TDI map using short-tracks is introduced, which reduces the TDI intensity dynamic range, and therefore enhances the directionality colour-contrast. Good agreement was observed between structures visualised in the super-resolution TDI maps and in the histological sections, supporting the anatomical information-content of the images generated using the TDI technique. The results therefore show that the TDI methodology does provide meaningful and rich anatomical contrast, in addition to achieving super-resolution. Furthermore, this study is the first to show the application of TDI to mouse brain imaging: the high-resolution, high-quality images demonstrate the useful complementary information that can be achieved using super-resolution TDI. Highlights► Track-density imaging (TDI): method recently introduced to gain spatial-resolution. ► We assess the anatomical information-content of TDI using ex vivo mouse data. ► Modified directional-encoded color TDI method is described with enhanced contrast. ► Structures visualised in TDI maps consistent with those in histological sections. ► First study to show the application of super-resolution TDI to mouse brain imaging.
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abstractThe recently proposed track-density imaging (TDI) technique was introduced as a means to achieve super-resolution using diffusion MRI. This technique is able to increase the spatial resolution of the reconstructed images beyond the acquired MRI resolution by incorporating information from whole-brain fibre-tracking results. It not only achieves super-resolution, but also provides very high anatomical contrast with a new MRI contrast mechanism. However, the anatomical information-content of this novel contrast mechanism has not yet been assessed. In this work, we perform such a study using diffusion MRI of ex vivo mouse brains acquired at 16.4T, to compare the results of the super-resolution TDI technique with histological staining (myelin and Nissl stains) in the same brains. Furthermore, a modified version of the directionally-encoded colour TDI map using short-tracks is introduced, which reduces the TDI intensity dynamic range, and therefore enhances the directionality colour-contrast. Good agreement was observed between structures visualised in the super-resolution TDI maps and in the histological sections, supporting the anatomical information-content of the images generated using the TDI technique. The results therefore show that the TDI methodology does provide meaningful and rich anatomical contrast, in addition to achieving super-resolution. Furthermore, this study is the first to show the application of TDI to mouse brain imaging: the high-resolution, high-quality images demonstrate the useful complementary information that can be achieved using super-resolution TDI. Highlights► Track-density imaging (TDI): method recently introduced to gain spatial-resolution. ► We assess the anatomical information-content of TDI using ex vivo mouse data. ► Modified directional-encoded color TDI method is described with enhanced contrast. ► Structures visualised in TDI maps consistent with those in histological sections. ► First study to show the application of super-resolution TDI to mouse brain imaging.
pubElsevier Inc.
doi10.1016/j.neuroimage.2011.07.014
eissn10959572
date2012-01-02