Evidence map›Paper›PMID 18835868›Full record

ArticleBrain : a journal of neurology2008

Accuracy of dementia diagnosis: a direct comparison between radiologists and a computerized method.

Stefan Klöppel, Cynthia M Stonnington, Josephine Barnes, Frederick Chen, Carlton Chu, Catriona D Good, Irina Mader, L Anne Mitchell, Ameet C Patel, Catherine C Roberts and 4 more

Open access · hybridAbstract readComparative StudyEvaluation StudyMulticenter Study
In one paragraph

Article in Brain : a journal of neurology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 93 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
93citing papers in PubMed, 3 pooled it
9.0field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

93 citing papers in PubMed, 3 syntheses or guidelines pooled it, 272 citations in OpenAlex.

  1. Interpretable machine learning for dementia: A systematic review.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2023
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  9. Machine learning diagnosis of cognitive impairment and dementia in harmonized older adult cohorts.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2025
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33 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

14 authors at 7 institutions in 5 countries.

Stefan KlöppelDepartment of Psychiatry and Psychotherapy and Freiburg Brain Imaging, University Clinic Freiburg, Freiburg, Germany. stefan.kloeppel@uniklinik-freiburg.de
Cynthia M Stonnington
Josephine Barnes
Frederick Chen
Carlton Chu
Catriona D Good
Irina Mader
L Anne Mitchell
Ameet C Patel
Catherine C Roberts
Nick C Fox
Clifford R Jack
John Ashburner
Richard S J Frackowiak
University Hospital Heidelberg · DEMayo Clinic in Arizona · USHeidelberg University · DEMayo Clinic · USUniversity College London · GBUniversity of Freiburg · DEWellcome Centre for Human Neuroimaging · GB

Funding

SUPPLEMENT TO ALZHEIMERS DISEASE PATIENT REGISTRYU01AG006786 · NIA · MAYO CLINIC ROCHESTER · PI GRAFF-RADFORD, JONATHAN, JACK, CLIFFORD R. · 1986 to 2023
$49.6M
THE PGRN/TDP-43 AXIS IN ALZHEIMER?S DISEASE AND NEURODEGENERATIONP50AG016574 · NIA · MAYO CLINIC ROCHESTER · PI BU, GUOJUN · 1999 to 2018
$36.9M
PREDICTING ALZHEIMERS DISEASE WITH MAGNETIC RESONANCER01AG011378 · NIA · MAYO CLINIC ROCHESTER · PI JACK, CLIFFORD R. · 1993 to 2017
$12.1M
Department of HealthMedical Research Council G0601846Medical Research Council G9626876NIA NIH HHS AG11378NIA NIH HHS P50 AG16574NIA NIH HHS U01 AG06786Wellcome Trust 075696 2/04/2
6 · The paper itself

Abstract

There has been recent interest in the application of machine learning techniques to neuroimaging-based diagnosis. These methods promise fully automated, standard PC-based clinical decisions, unbiased by variable radiological expertise. We recently used support vector machines (SVMs) to separate sporadic Alzheimer's disease from normal ageing and from fronto-temporal lobar degeneration (FTLD). In this study, we compare the results to those obtained by radiologists. A binary diagnostic classification was made by six radiologists with different levels of experience on the same scans and information that had been previously analysed with SVM. SVMs correctly classified 95% (sensitivity/specificity: 95/95) of sporadic Alzheimer's disease and controls into their respective groups. Radiologists correctly classified 65-95% (median 89%; sensitivity/specificity: 88/90) of scans. SVM correctly classified another set of sporadic Alzheimer's disease in 93% (sensitivity/specificity: 100/86) of cases, whereas radiologists ranged between 80% and 90% (median 83%; sensitivity/specificity: 80/85). SVMs were better at separating patients with sporadic Alzheimer's disease from those with FTLD (SVM 89%; sensitivity/specificity: 83/95; compared to radiological range from 63% to 83%; median 71%; sensitivity/specificity: 64/76). Radiologists were always accurate when they reported a high degree of diagnostic confidence. The results show that well-trained neuroradiologists classify typical Alzheimer's disease-associated scans comparable to SVMs. However, SVMs require no expert knowledge and trained SVMs can readily be exchanged between centres for use in diagnostic classification. These results are encouraging and indicate a role for computerized diagnostic methods in clinical practice.

Indexed as

AgedAged, 80 and overAgingAlzheimer DiseaseBrainClinical CompetenceDementiaDiagnosis, DifferentialEpidemiologic MethodsFemaleHumansImage Interpretation, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedPattern Recognition, Automated

Identifiers

PMID18835868
PMCPMC2577804
OpenAlexW2105037799

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.