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Updated: Aug 29, 2026

A Machine Learning Approach to Design an Efficient Selective Screening of Mild Cognitive Impairment
Published on: January 11, 2020
[Mild cognitive disorder. Questions of definition, diagnosis, prognosis and therapy]
A Kurz1, J Diehl, M Riemenschneider
1Klinik für Psychiatrie und Psychotherapie, Technische Universität München. alexander.kurz@lrz.tum.de
Abstract:
The syndrome of mild cognitive impairment (MCI) is heterogeneous in terms of aetiology, psychopathology, and prognosis. It is characterised by cognitive deterioration significantly exceeding the decline attributable to aging but not reaching the severity of dementia. The prevalence of MCI is estimated to be 17% in the population over 65 years old. At neuropathological examination, a large proportion of patients with mild cognitive impairment, particularly of the amnestic type, show typical features of Alzheimer's disease. The former progresses to dementia at an annual rate of 10% to 15%. In some cases, however, there is stable impairment or remission. The neurodegenerative process of Alzheimer's disease can be demonstrated in at least some patients using volumetric magnetic resonance imaging, 18-FDG positron emission tomography, or biochemical markers in the cerebrospinal fluid. It is not yet known whether patients with mild cognitive impairment or at least those with predementia Alzheimer's disease can benefit from currently available symptomatic treatments. Patients with early-stage Alzheimer's are an important target group for treatment interventions aiming at slowing the neurodegenerative process.
Insights
Mild cognitive impairment (MCI) affects 17% of those over 65, often showing Alzheimer's disease features. Early intervention in predementia Alzheimer's disease is crucial for potential treatment benefits.
Area of Science:
- Neurology
- Neuroscience
- Geriatrics
Context:
- Mild cognitive impairment (MCI) is a heterogeneous syndrome characterized by cognitive decline exceeding normal aging but not dementia severity.
- Prevalence of MCI is estimated at 17% in individuals over 65 years old.
- A significant proportion of MCI cases, especially the amnestic type, exhibit neuropathological features of Alzheimer's disease.
Purpose:
- To explore the heterogeneous nature of mild cognitive impairment (MCI) and its relationship with Alzheimer's disease.
- To highlight the diagnostic markers and progression rates of MCI towards dementia.
- To discuss the potential for therapeutic interventions in early-stage Alzheimer's disease and predementia stages.
Summary:
- MCI presents with significant cognitive deterioration, with 10-15% progressing annually to dementia, often linked to Alzheimer's disease.
- Diagnostic tools like MRI, PET scans, and CSF biomarkers can reveal underlying neurodegenerative processes.
- The potential benefits of current symptomatic treatments for MCI and predementia Alzheimer's disease remain under investigation.
Impact:
- Understanding MCI's heterogeneity is key for accurate diagnosis and prognosis.
- Identifying patients with predementia Alzheimer's disease is critical for developing and testing neuroprotective treatments.
- Early-stage Alzheimer's disease patients represent a vital cohort for interventions aimed at slowing neurodegeneration.
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