Evidence map›Paper›PMID 28180077›Full record

ArticleNeuroImage. Clinical2017

Multicenter stability of resting state fMRI in the detection of Alzheimer's disease and amnestic MCI.

Stefan J Teipel, Alexandra Wohlert, Coraline Metzger, Timo Grimmer, Christian Sorg, Michael Ewers, Eva Meisenzahl, Stefan Klöppel, Viola Borchardt, Michel J Grothe and 2 more

Abstract read
In one paragraph

Article in NeuroImage. Clinical, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 3 pooled it
–field-weighted citation impact
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

29 citing papers in PubMed, 3 syntheses or guidelines pooled it.

  1. Functional magnetic resonance imaging, deep learning, and Alzheimer's disease: A systematic review.Journal of neuroimaging : official journal of the American Society of Neuroimaging · 2023
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  10. Prefrontal parvalbumin interneurons deficits mediate early emotional dysfunction in Alzheimer's disease.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023
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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

12 authors.

Stefan J TeipelDepartment of Psychosomatic Medicine, University of Rostock, Rostock, Germany; DZNE, German Center for Neurodegenerative Diseases, Rostock, Germany.
Alexandra WohlertDepartment of Psychosomatic Medicine, University of Rostock, Rostock, Germany.
Coraline MetzgerInstitute of Cognitive Neurology and Dementia Research (IKND), Department of Psychiatry and Psychotherapy, Otto von Guericke University, Germany and German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany.
Timo GrimmerDepartment of Psychiatry and Psychotherapy, Klinikum rechts der Isar, Technische Universität München, Munich, Germany.
Christian SorgDepartment of Neuroradiology of Klinikum rechts der Isar, Technische Universität München, Department of Psychiatry of Klinikum rechts der Isar, TUM-Neuroimaging Center, Einsteinstr. 1, 81675 Munich, Germany.
Michael EwersInstitute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Munich, Germany.
Eva MeisenzahlDepartment of Psychiatry, Klinikum der Universität München, Ludwig-Maximilians-Universität LMU, Munich, Germany.
Stefan KlöppelDepartment of Psychiatry and Psychotherapy, Section of Gerontopsychiatry and Neuropsychology, Faculty of Medicine, University of Freiburg, Germany; University Hospital of Old Age Psychiatry, Bern, Switzerland.
Viola BorchardtLeibniz Institute for Neurobiology, Magdeburg, Germany; Department of Psychiatry, University Tübingen, Germany.
Michel J GrotheDZNE, German Center for Neurodegenerative Diseases, Rostock, Germany.
Martin WalterLeibniz Institute for Neurobiology, Magdeburg, Germany; Department of Psychiatry, University Tübingen, Germany.
Martin DyrbaDZNE, German Center for Neurodegenerative Diseases, Rostock, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn monocentric studies, patients with mild cognitive impairment (MCI) and Alzheimer's disease (AD) dementia exhibited alterations of functional cortical connectivity in resting-state functional MRI (rs-fMRI) analyses. Multicenter studies provide access to large sample sizes, but rs-fMRI may be particularly sensitive to multiscanner effects.

methodsWe used data from five centers of the "German resting-state initiative for diagnostic biomarkers" (psymri.org), comprising 367 cases, including AD patients, MCI patients and healthy older controls, to assess the influence of the distributed acquisition on the group effects. We calculated accuracy of group discrimination based on whole brain functional connectivity of the posterior cingulate cortex (PCC) using pooled samples as well as second-level analyses across site-specific group contrast maps.

resultsWe found decreased functional connectivity in AD patients vs. controls, including clusters in the precuneus, inferior parietal cortex, lateral temporal cortex and medial prefrontal cortex. MCI subjects showed spatially similar, but less pronounced, differences in PCC connectivity when compared to controls. Group discrimination accuracy for AD vs. controls (MCI vs. controls) in the test data was below 76% (72%) based on the pooled analysis, and even lower based on the second level analysis stratified according to scanner. Only a subset of quality measures was useful to detect relevant scanner effects.

conclusionsMulticenter rs-fMRI analysis needs to employ strict quality measures, including visual inspection of all the data, to avoid seriously confounded group effects. While pending further confirmation in biomarker stratified samples, these findings suggest that multicenter acquisition limits the use of rs-fMRI in AD and MCI diagnosis.

Indexed as

RestAgedAged, 80 and overAlzheimer DiseaseBrain MappingCognitive DysfunctionFemaleHippocampusHumansImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleMiddle AgedNeural PathwaysOxygenOxygen

Identifiers

PMID28180077
PMCPMC5279697

What OpenQuestion holds

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LicenceCC BY-NC-ND
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.