The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking

There is great interest in the study of brain structural connectivity, as white matter abnormalities have been implicated in many disease states. Diffusion magnetic resonance imaging (MRI) provides a powerful means to characterise structural connectivity non-invasively, by using a fibre-tracking alg...

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Main Author: Fernando Calamante
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Diagnostics
Subjects:
Online Access:https://www.mdpi.com/2075-4418/9/3/115
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author Fernando Calamante
author_facet Fernando Calamante
author_sort Fernando Calamante
collection DOAJ
description There is great interest in the study of brain structural connectivity, as white matter abnormalities have been implicated in many disease states. Diffusion magnetic resonance imaging (MRI) provides a powerful means to characterise structural connectivity non-invasively, by using a fibre-tracking algorithm. The most widely used fibre-tracking strategy is based on the step-wise generation of streamlines. Despite their popularity and widespread use, there are a number of practical considerations that must be taken into account in order to increase the robustness of streamlines tracking results, particularly when these methods are used to study brain structural connectivity, and the connectome. This review article describes what we consider the <i>&#8216;seven deadly sins&#8217;</i> of mapping structural connections using diffusion MRI streamlines fibre-tracking, with particular emphasis on &#8216;sins&#8217; that can be practically avoided and they can have an important impact in the results. It is shown that there are important &#8216;deadly sins&#8217; to be avoided at every step of the pipeline, such as during data acquisition, during data modelling to estimate local fibre architecture, during the fibre-tracking process itself, and during quantification of the tracking results. The recommendations here are intended to inform users on potential important shortcomings of their current tracking protocols, as well as to guide future users on some of the key issues and decisions that must be faced when designing their processing pipelines.
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spelling doaj.art-fb2ba363b11945818c57c543d367a36a2022-12-22T04:23:37ZengMDPI AGDiagnostics2075-44182019-09-019311510.3390/diagnostics9030115diagnostics9030115The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-TrackingFernando Calamante0Sydney Imaging, The University of Sydney, Sydney, New South Wales 2050, AustraliaThere is great interest in the study of brain structural connectivity, as white matter abnormalities have been implicated in many disease states. Diffusion magnetic resonance imaging (MRI) provides a powerful means to characterise structural connectivity non-invasively, by using a fibre-tracking algorithm. The most widely used fibre-tracking strategy is based on the step-wise generation of streamlines. Despite their popularity and widespread use, there are a number of practical considerations that must be taken into account in order to increase the robustness of streamlines tracking results, particularly when these methods are used to study brain structural connectivity, and the connectome. This review article describes what we consider the <i>&#8216;seven deadly sins&#8217;</i> of mapping structural connections using diffusion MRI streamlines fibre-tracking, with particular emphasis on &#8216;sins&#8217; that can be practically avoided and they can have an important impact in the results. It is shown that there are important &#8216;deadly sins&#8217; to be avoided at every step of the pipeline, such as during data acquisition, during data modelling to estimate local fibre architecture, during the fibre-tracking process itself, and during quantification of the tracking results. The recommendations here are intended to inform users on potential important shortcomings of their current tracking protocols, as well as to guide future users on some of the key issues and decisions that must be faced when designing their processing pipelines.https://www.mdpi.com/2075-4418/9/3/115fibre-trackingtractogramconnectivitytractographystreamlines
spellingShingle Fernando Calamante
The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
Diagnostics
fibre-tracking
tractogram
connectivity
tractography
streamlines
title The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
title_full The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
title_fullStr The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
title_full_unstemmed The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
title_short The Seven Deadly Sins of Measuring Brain Structural Connectivity Using Diffusion MRI Streamlines Fibre-Tracking
title_sort seven deadly sins of measuring brain structural connectivity using diffusion mri streamlines fibre tracking
topic fibre-tracking
tractogram
connectivity
tractography
streamlines
url https://www.mdpi.com/2075-4418/9/3/115
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