Journal ArticleDOI
Weighted linear least squares estimation of diffusion MRI parameters: Strengths, limitations, and pitfalls
TLDR
If proper weighting strategies are applied, the weighted linear least squares approach shows high performance characteristics in terms of accuracy/precision and may even be preferred over nonlinear estimation methods.About:
This article is published in NeuroImage.The article was published on 2013-11-01. It has received 403 citations till now. The article focuses on the topics: Generalized least squares & Non-linear least squares.read more
Citations
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Journal ArticleDOI
MRtrix3: A fast, flexible and open software framework for medical image processing and visualisation
Jacques-Donald Tournier,Robert E. Smith,Robert E. Smith,David Raffelt,Rami Tabbara,Thijs Dhollander,Thijs Dhollander,Maximilian Pietsch,Daan Christiaens,Ben Jeurissen,Chun-Hung Yeh,Chun-Hung Yeh,Alan Connelly,Alan Connelly +13 more
TL;DR: A high-level overview of the features of the MRtrix3 framework and general-purpose image processing applications provided with the software is provided.
Journal ArticleDOI
Denoising of diffusion MRI using random matrix theory
Jelle Veraart,Dmitry S. Novikov,Daan Christiaens,Benjamin Ades-Aron,Jan Sijbers,Els Fieremans +5 more
TL;DR: A post-processing technique for fast denoising of diffusion-weighted MR images is introduced and it is demonstrated that the technique suppresses local signal fluctuations that solely originate from thermal noise rather than from other sources such as anatomical detail.
Journal ArticleDOI
The challenge of mapping the human connectome based on diffusion tractography
Klaus H. Maier-Hein,Peter F. Neher,Jean-Christophe Houde,Marc-Alexandre Côté,Eleftherios Garyfallidis,Jidan Zhong,Maxime Chamberland,Fang-Cheng Yeh,Ying-Chia Lin,Qing Ji,Wilburn E. Reddick,John O. Glass,David Qixiang Chen,Yuanjing Feng,Chengfeng Gao,Ye Wu,Jieyan Ma,H Renjie,Qiang Li,Carl-Fredrik Westin,Samuel Deslauriers-Gauthier,J. Omar Ocegueda Gonzalez,Michael Paquette,Samuel St-Jean,Gabriel Girard,François Rheault,Jasmeen Sidhu,Chantal M. W. Tax,Fenghua Guo,Hamed Y. Mesri,Szabolcs David,Martijn Froeling,Anneriet M. Heemskerk,Alexander Leemans,Arnaud Boré,Basile Pinsard,Christophe Bedetti,Matthieu Desrosiers,Simona M. Brambati,Julien Doyon,Alessia Sarica,Roberta Vasta,Antonio Cerasa,Aldo Quattrone,Jason D. Yeatman,Ali R. Khan,Wes Hodges,Simon Alexander,David Romascano,Muhamed Barakovic,Anna Auría,Oscar Esteban,Alia Lemkaddem,Jean-Philippe Thiran,Hasan Ertan Cetingul,Benjamin L. Odry,Boris Mailhe,Mariappan S. Nadar,Fabrizio Pizzagalli,Gautam Prasad,Julio E. Villalon-Reina,Justin Galvis,Paul M. Thompson,Francisco De Santiago Requejo,Pedro Luque Laguna,Luis Miguel Lacerda,Rachel Barrett,Flavio Dell'Acqua,Marco Catani,Laurent Petit,Emmanuel Caruyer,Alessandro Daducci,Tim B. Dyrby,Tim Holland-Letz,Claus C. Hilgetag,Bram Stieltjes,Maxime Descoteaux +76 more
TL;DR: The encouraging finding that most state-of-the-art algorithms produce tractograms containing 90% of the ground truth bundles (to at least some extent) is reported, however, the same tractograms contain many more invalid than valid bundles, and half of these invalid bundles occur systematically across research groups.
Posted ContentDOI
MRtrix3: A fast, flexible and open software framework for medical image processing and visualisation
Jacques-Donald Tournier,Robert E. Smith,Robert E. Smith,David Raffelt,Rami Tabbara,Thijs Dhollander,Thijs Dhollander,Maximilian Pietsch,Daan Christiaens,Ben Jeurissen,Chun-Hung Yeh,Chun-Hung Yeh,Alan Connelly,Alan Connelly +13 more
TL;DR: A high-level overview of the features of the MRtrix3 framework and general-purpose image processing applications provided with the software is provided.
Journal ArticleDOI
Diffusion MRI noise mapping using random matrix theory.
TL;DR: To estimate the spatially varying noise map using a redundant series of magnitude MR images, a random number generator is used to estimate the signal-to- Noise ratio.
References
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MR diffusion tensor spectroscopy and imaging.
TL;DR: Once Deff is estimated from a series of NMR pulsed-gradient, spin-echo experiments, a tissue's three orthotropic axes can be determined and the effective diffusivities along these orthotropic directions are the eigenvalues of Deff.
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Generalized autocalibrating partially parallel acquisitions (GRAPPA).
Mark A. Griswold,Peter M. Jakob,Robin M. Heidemann,Mathias Nittka,Vladimir Jellus,Jianmin Wang,Berthold Kiefer,Axel Haase +7 more
TL;DR: This technique, GeneRalized Autocalibrating Partially Parallel Acquisitions (GRAPPA) is an extension of both the PILS and VD‐AUTO‐SMASH reconstruction techniques and provides unaliased images from each component coil prior to image combination.
Journal ArticleDOI
Estimation of the Effective Self-Diffusion Tensor from the NMR Spin Echo
TL;DR: The diagonal and off-diagonal elements of the effective self-diffusion tensor, Deff, are related to the echo intensity in an NMR spin-echo experiment.
Journal ArticleDOI
Toward a quantitative assessment of diffusion anisotropy
Carlo Pierpaoli,Peter J. Basser +1 more
TL;DR: New indices calculated from the entire diffusion tensor are rotationally invariant (RI) and show that anisotropy is highly variable in different white matter regions depending on the degree of coherence of fiber tract directions.
Journal ArticleDOI
Diffusional kurtosis imaging: The quantification of non-gaussian water diffusion by means of magnetic resonance imaging
TL;DR: From the study of six healthy adult subjects, the excess diffusional kurtosis is found to be significantly higher in white matter than in gray matter, reflecting the structural differences between these two types of cerebral tissues.