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Diffusion tensor imaging and tract-based spatial statistics in Alzheimer's disease and mild cognitive impairment
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2011 (English)In: Neurobiology of Aging, ISSN 0197-4580, E-ISSN 1558-1497, Vol. 32, no 9, 1558-1571 p.Article in journal (Refereed) Published
Abstract [en]

We aimed to explore the changes in fractional anisotropy (FA) in subjects with mild cognitive impairment (MCI) and Alzheimer's disease (AD) by analyzing diffusion tensor imaging (DTI) data using the Tract-Based Spatial Statistics (TBSS). DTI data were collected from 17 AD patients, 27 MCI subjects and 19 healthy controls. Voxel-based analysis with TBSS was used to compare FA among the three groups. Additionally, guided by TBSS findings, a region of interest (ROI)-based analysis along the TBSS skeleton was performed on group-level and the accuracy of the method was assessed by the back-projection of ROIs to the native space FA. Neurofiber tracts with decreased FA included: the parahippocampal white matter, cingulum, uncinate fasciculus, inferior and superior longitudinal fasciculus, corpus callosum, fornix, tracts in brain stem, and cerebellar tracts. Quantitative ROI-analysis further demonstrated the significant decrease on FA values in AD patients relative to controls whereas FA values of MCI patients were found in between the controls and AD patients. We conclude that TBSS is a promising method in examining the degeneration of neurofiber tracts in MCI and AD patients.

Place, publisher, year, edition, pages
Fayetteville, N.Y.: Ankho International , 2011. Vol. 32, no 9, 1558-1571 p.
National Category
Medical and Health Sciences Neurosciences Radiology, Nuclear Medicine and Medical Imaging
URN: urn:nbn:se:su:diva-85161DOI: 10.1016/j.neurobiolaging.2009.10.006PubMedID: 19913331OAI: diva2:585402
Available from: 2013-01-10 Created: 2013-01-07 Last updated: 2013-06-07Bibliographically approved

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Neurobiology of Aging
Medical and Health SciencesNeurosciencesRadiology, Nuclear Medicine and Medical Imaging

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