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Evidence-based evaluation of magnetic resonance imaging as a diagnostic tool in dementia workup

  • Lars-Olof Wahlund
  • Ove Almkvist
  • Kaj Blennow
  • Knut Engedahl
  • Aki Johanson
  • Gunhild Waldemar
  • Henrike Wolf
Publiceringsår: 2005
Språk: Engelska
Sidor: 427-437
Publikation/Tidskrift/Serie: Topics in Magnetic Resonance Imaging
Volym: 16
Nummer: 6
Dokumenttyp: Artikel i tidskrift
Förlag: Lippincott Williams & Wilkins


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.


  • Psychology
  • Dementia workup
  • medial temporal lobe
  • Alzheimer disease
  • specificity
  • sensitivity
  • likelihood ratios
  • evidence-based medicine
  • magnetic resonance imaging
  • diagnosis


  • ISSN: 0899-3459

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