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Sökning: WFRF:(Wahlund Lars Olof) > Forskningsöversikt

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1.
  • Ferreira, Luiz Kobuti, et al. (författare)
  • Functional connectivity in behavioral variant frontotemporal dementia
  • 2022
  • Ingår i: Brain and Behavior. - : Wiley. - 2162-3279. ; 12:12
  • Forskningsöversikt (refereegranskat)abstract
    • Introduction: Functional connectivity (FC)—which reflects relationships between neural activity in different brain regions—has been used to explore the functional architecture of the brain in neurodegenerative disorders. Although an increasing number of studies have explored FC changes in behavioral variant frontotemporal dementia (bvFTD), there is no focused, in-depth review about FC in bvFTD. Methods: Comprehensive literature search and narrative review to summarize the current field of FC in bvFTD. Results: (1) Decreased FC within the salience network (SN) is the most consistent finding in bvFTD; (2) FC changes extend beyond the SN and affect the interplay between networks; (3) results within the Default Mode Network are mixed; (4) the brain as a network is less interconnected and less efficient in bvFTD; (5) symptoms, functional impairment, and cognition are associated with FC; and (6) the functional architecture resembles patterns of neuropathological spread. Conclusions: FC has potential as a biomarker, and future studies are expected to advance the field with multicentric initiatives, longitudinal designs, and methodological advances.
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2.
  • Wahlund, Lars-Olof, et al. (författare)
  • Evidence-based evaluation of magnetic resonance imaging as a diagnostic tool in dementia workup
  • 2005
  • Ingår i: Topics in Magnetic Resonance Imaging. - : Ovid Technologies (Wolters Kluwer Health). - 0899-3459. ; 16:6, s. 427-437
  • Forskningsöversikt (refereegranskat)abstract
    • BACKGROUND: The diagnostic utility of magnetic resonance imaging in dementia workups has increased recently. The basic use is to exclude space-occupying processes in the brain. However, magnetic resonance imaging offers major opportunities for studying atrophy of specific brain areas. A great interest has been put in whether atrophy in the medial temporal lobe can serve as an early diagnostic marker for Alzheimer disease. METHODS AND RESULTS: In this evaluation, we used evidence-based techniques and reviewed more than 400 articles that address this issue. Our main finding is that a variety of methods in studying brain areas were used, and this made it difficult to extract conclusive information in a systematic way. CONCLUSION: However, we were able to conclude that atrophy of the hippocampus can distinguish patients with Alzheimer disease from healthy subjects, but there was a lack of evidence because of insufficient studies concerning the usefulness of medial temporal lobe atrophy as a diagnostic marker in a more general setting.
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