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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 02 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:
ID: ISSN: 1053-8119 ; E-ISSN: 1095-9572 ; DOI: 10.1016/j.neuroimage.2011.07.014
Link: https://www.sciencedirect.com/science/article/pii/S1053811911007750
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recordid: elsevier_sdoi_10_1016_j_neuroimage_2011_07_014
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:
  • Magnetic Resonance Imaging
  • Super-Resolution
  • Mouse Brain
  • Diffusion Mri
  • Validation
  • Histology
  • Medicine
ispartof: NeuroImage, 02 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. ► 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 ; E-ISSN: 1095-9572 ; DOI: 10.1016/j.neuroimage.2011.07.014
fulltext: fulltext
issn:
  • 1053-8119
  • 10538119
  • 1095-9572
  • 10959572
url: Link


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titleSuper-resolution track-density imaging studies of mouse brain: Comparison to histology
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subjectMagnetic Resonance Imaging ; Super-Resolution ; Mouse Brain ; Diffusion Mri ; Validation ; Histology ; Medicine
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. ► 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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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.

► 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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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.

► 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
lad01NeuroImage
date2012-01-02