This database contains 6 studies, archived under the term: "diffusion tensor imaging"
Longitudinal changes of fractional anisotropy in Alzheimer’s disease patients treated with galantamine: a 12-month randomized, placebo-controlled, double-blinded study
Likitjaroen, Y.,
Meindl, T.,
Friese, U.,
Wagner, M.,
Buerger, K.,
Hampel, H.,
Teipel, S. J.
Diffusion tensor imaging (DTI) demonstrates decline of fractional anisotropy (FA) as a marker of fiber tract integrity in Alzheimer’s disease (AD). We aimed to assess the longitudinal course of white matter microstructural changes in AD and healthy elderly control (HC) subjects and to evaluate the effects of treatment with the cholinesterase inhibitor galantamine on white […]
Acute caffeine administration effect on brain activation patterns in mild cognitive impairment
Haller, Sven,
Montandon, Marie-Louise,
Rodriguez, Cristelle,
Moser, Dominik,
Toma, Simona,
Hofmeister, Jeremy,
Sinanaj, Indrit,
Lovblad, Karl-Olof,
Giannakopoulos, Panteleimon
Previous studies showed that acute caffeine administration enhances task-related brain activation in elderly individuals with preserved cognition. To explore the effects of this widely used agent on cognition and brain activation in early phases of cognitive decline, we performed a double-blinded, placebo-controlled functional magnetic resonance imaging (fMRI) study during an n-back working memory task in […]
MRI signatures of brain macrostructural atrophy and microstructural degradation in frontotemporal lobar degeneration subtypes
Zhang, Yu,
Tartaglia, Maria Carmela,
Schuff, Norbert,
Chiang, Gloria C.,
Ching, Christopher,
Rosen, Howard J.,
Gorno-Tempini, Maria Luisa,
Miller, Bruce L.,
Weiner, Michael W.
Brain magnetic resonance imaging (MRI) studies have demonstrated regional patterns of brain macrostructural atrophy and white matter microstructural alterations separately in the three major subtypes of frontotemporal lobar degeneration (FTLD), which includes behavioral variant frontotemporal dementia (bvFTD), semantic dementia (SD), and progressive nonfluent aphasia (PNFA). This study was to investigate to what extent the pattern […]
Multicenter stability of diffusion tensor imaging measures: a European clinical and physical phantom study
Teipel, Stefan J.,
Reuter, Sigrid,
Stieltjes, Bram,
Acosta-Cabronero, Julio,
Ernemann, Ulrike,
Fellgiebel, Andreas,
Filippi, Massimo,
Frisoni, Giovanni,
Hentschel, Frank,
Jessen, Frank,
Klöppel, Stefan,
Meindl, Thomas,
Pouwels, Petra J.W.,
Hauenstein, Karl-Heinz,
Hampel, Harald
Diffusion tensor imaging (DTI) detects white matter damage in neuro-psychiatric disorders, but data on reliability of DTI measures across more than two scanners are still missing. In this study we assessed multicenter reproducibility of DTI acquisitions based on a physical phantom as well as brain scans across 16 scanners. In addition, we performed DTI scans […]
Alzheimer’s disease (AD) and executive dysfunction. A case-control study on the significance of frontal white matter changes detected by diffusion tensor imaging (DTI)
Sjöbeck, Martin,
Elfgren, Christina,
Larsson, Elna-Marie,
Brockstedt, Sara,
Lätt, Jimmy,
Englund, Elisabet,
Passant, Ulla
White matter (WM) changes are frequently seen on structural imaging in AD but the clinical relevance of these changes is uncertain. Frontal WM pathology is often observed upon neuropathological examination in AD. Since frontal cortical/sub-cortical pathology is known to relate to executive dysfunction, the aim was to elucidate if frontal WM changes in AD correlated […]
Altered microstructure in corticospinal tract in idiopathic normal pressure hydrocephalus: comparison with Alzheimer disease and Parkinson disease with dementia
Hattori, T.,
Yuasa, T.,
Aoki, S.,
Sato, R.,
Sawaura, H.,
Mori, T.,
Mizusawa, H.
Background and Purpose: Previous neuropathologic studies in chronic hydrocephalus have suggested the presence of white matter damage, presumably from mechanical pressure due to ventricular enlargement and metabolic derangement. This study aimed to investigate the diffusional properties of the CST in patients with iNPH by using DTI and to determine whether this method could be used […]