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Related Concept Videos

Dementia l: Introduction01:22

Dementia l: Introduction

35
Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
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Brain Imaging01:14

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Brain imaging technologies provide critical insights into both the structure and function of the human brain, enabling medical professionals and researchers to diagnose, study, and treat neurological disorders or psychiatric disorders more effectively.
These technologies include computerized axial tomography (CAT or CT scans), positron-emission tomography (PET scans),  magnetic resonance imaging (MRI),  functional magnetic resonance imaging (fMRI), and Transcranial Magnetic...
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Related Experiment Video

Updated: May 6, 2026

Three-Dimensional Shape Modeling and Analysis of Brain Structures
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An algorithmic approach to structural imaging in dementia.

Lorna Harper1, Frederik Barkhof, Philip Scheltens

  • 1Department of Neurodegenerative Disease, Dementia Research Centre, UCL Institute of Neurology, , London, UK.

Journal of Neurology, Neurosurgery, and Psychiatry
|October 18, 2013
PubMed
Summary
This summary is machine-generated.

Accurate dementia diagnosis aids patient care. Structural MRI, combined with clinical assessment, helps identify neurodegenerative dementias by revealing key brain changes, improving diagnostic accuracy.

Keywords:
DEMENTIAIMAGE ANALYSISMRINEURORADIOLOGYVASCULAR DEMENTIA

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Area of Science:

  • Neurology
  • Radiology
  • Medical Diagnostics

Background:

  • Accurate dementia diagnosis is crucial for patient management and family support.
  • Currently, definitive diagnosis often requires postmortem brain tissue examination, except for specific genetic mutations.
  • Structural neuroimaging, particularly MRI, aids in improving diagnostic accuracy during a patient's lifetime.

Purpose of the Study:

  • To describe characteristic MRI findings in various dementias.
  • To provide a structured algorithm for assessing MRI scans for dementia diagnosis.
  • To offer clinicians a practical guide for interpreting neuroimaging in dementia evaluation.

Main Methods:

  • Review of characteristic MRI findings in different types of dementia.
  • Development of a structured algorithm for MRI scan analysis.
  • Integration of clinical assessment with neuroimaging features.

Main Results:

  • Structural MRI reveals signal changes and cerebral atrophy indicative of neurodegenerative dementias.
  • Specific imaging features offer positive predictive value, helping to narrow differential diagnoses.
  • No single imaging feature possesses perfect sensitivity and specificity for all diagnoses.

Conclusions:

  • Structural MRI, when interpreted systematically, is a valuable tool in diagnosing dementia during life.
  • Neuroimaging findings, alongside clinical assessment, support the diagnosis of neurodegenerative dementias.
  • A structured approach to MRI analysis can enhance diagnostic accuracy for non-radiologists.