Zeestraten, EA; Benjamin, P; Lambert, C; Lawrence, AJ; Williams, OA; Morris, RG; Barrick, TR; Markus, HS
(2016)
Application of Diffusion Tensor Imaging Parameters to Detect Change in Longitudinal Studies in Cerebral Small Vessel Disease.
PLoS One, 11 (1).
ISSN 1932-6203
https://doi.org/10.1371/journal.pone.0147836
SGUL Authors: Barrick, Thomas Richard Lawrence, Andrew John Lambert, Christian Paul Benjamin, Philip
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Abstract
Cerebral small vessel disease (SVD) is the major cause of vascular cognitive impairment, resulting in significant disability and reduced quality of life. Cognitive tests have been shown to be insensitive to change in longitudinal studies and, therefore, sensitive surrogate markers are needed to monitor disease progression and assess treatment effects in clinical trials. Diffusion tensor imaging (DTI) is thought to offer great potential in this regard. Sensitivity of the various parameters that can be derived from DTI is however unknown. We aimed to evaluate the differential sensitivity of DTI markers to detect SVD progression, and to estimate sample sizes required to assess therapeutic interventions aimed at halting decline based on DTI data. We investigated 99 patients with symptomatic SVD, defined as clinical lacunar syndrome with MRI confirmation of a corresponding infarct as well as confluent white matter hyperintensities over a 3 year follow-up period. We evaluated change in DTI histogram parameters using linear mixed effect models and calculated sample size estimates. Over a three-year follow-up period we observed a decline in fractional anisotropy and increase in diffusivity in white matter tissue and most parameters changed significantly. Mean diffusivity peak height was the most sensitive marker for SVD progression as it had the smallest sample size estimate. This suggests disease progression can be monitored sensitively using DTI histogram analysis and confirms DTI's potential as surrogate marker for SVD.
Item Type: | Article | |||||||||
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Additional Information: | © 2016 Zeestraten et al. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. | |||||||||
Keywords: | General Science & Technology, MD Multidisciplinary | |||||||||
SGUL Research Institute / Research Centre: | Academic Structure > Molecular and Clinical Sciences Research Institute (MCS) Academic Structure > Molecular and Clinical Sciences Research Institute (MCS) > Neuroscience (INCCNS) |
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Journal or Publication Title: | PLoS One | |||||||||
Article Number: | e0147836 | |||||||||
ISSN: | 1932-6203 | |||||||||
Language: | eng | |||||||||
Publisher License: | Creative Commons: Attribution 4.0 | |||||||||
Projects: |
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PubMed ID: | 26808982 | |||||||||
Go to PubMed abstract | ||||||||||
URI: | https://openaccess.sgul.ac.uk/id/eprint/107804 | |||||||||
Publisher's version: | https://doi.org/10.1371/journal.pone.0147836 |
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