Evidence map›Paper›PMID 34988592›Full record

ArticleNeuroradiology2022

Different FreeSurfer versions might generate different statistical outcomes in case-control comparison studies.

Pavel Filip, Petr Bednarik, Lynn E Eberly, Amir Moheet, Alena Svatkova, Heidi Grohn, Anjali F Kumar, Elizabeth R Seaquist, Silvia Mangia

Abstract read
In one paragraph

Article in Neuroradiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–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

16 citing papers in PubMed.

  1. Article
  2. Encoding Discordance in the Alzheimer's Disease A/T/N Framework.medRxiv : the preprint server for health sciences · 2026
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Personalizing progressive changes to brain structure in Alzheimer's disease using normative modeling.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
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

9 authors.

Pavel FilipCenter for Magnetic Resonance Research (CMRR), University of Minnesota, 2021 Sixth St. SE, Minneapolis, MN, 55455, USA.
Petr BednarikCenter for Magnetic Resonance Research (CMRR), University of Minnesota, 2021 Sixth St. SE, Minneapolis, MN, 55455, USA.
Lynn E EberlyCenter for Magnetic Resonance Research (CMRR), University of Minnesota, 2021 Sixth St. SE, Minneapolis, MN, 55455, USA.
Amir MoheetDepartment of Medicine, University of Minnesota, Minneapolis, MN, USA.
Alena SvatkovaDepartment of Medicine III, Clinical Division of Endocrinology and Metabolism, Medical University of Vienna, Vienna, Austria.
Heidi GrohnCenter for Magnetic Resonance Research (CMRR), University of Minnesota, 2021 Sixth St. SE, Minneapolis, MN, 55455, USA.
Anjali F KumarDepartment of Medicine, University of Minnesota, Minneapolis, MN, USA.
Elizabeth R SeaquistDepartment of Medicine, University of Minnesota, Minneapolis, MN, USA.
Silvia MangiaCenter for Magnetic Resonance Research (CMRR), University of Minnesota, 2021 Sixth St. SE, Minneapolis, MN, 55455, USA. mangia@umn.edu.ORCID http://orcid.org/0000-0001-6341-4516

Funding

University of Minnesota Clinical and Translational Science Institute (UMN CTSI)UL1TR000114 · NCATS · UNIVERSITY OF MINNESOTA · PI BLAZAR, BRUCE R · 2012 to 2015
$35.0M
TRD4 - Ultrahigh Field Engineering and SafetyP41EB027061 · NIBIB · UNIVERSITY OF MINNESOTA · PI Gregory John Metzger, KAMIL UGURBIL · 2019 to 2026
$11.7M
NMR Imaging and SpectroscopyP41EB015894 · NIBIB · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2012 to 2017
$8.4M
University of Minnesota Clinical and Translational Science Institute (UMN CTSI)KL2TR000113 · NCATS · UNIVERSITY OF MINNESOTA · PI BLAZAR, BRUCE R · 2012 to 2015
$5.4M
Institutional Center Cores for Advanced NeuroimagingP30NS076408 · NINDS · UNIVERSITY OF MINNESOTA · PI UGURBIL, KAMIL · 2012 to 2020
$4.2M
Identifying the Brain Substrates of Hypoglycemia Unawareness in Type 1 DiabetesR01DK099137 · NIDDK · UNIVERSITY OF MINNESOTA · PI MANGIA, SILVIA · 2014 to 2018
$2.5M
Identifying the Brain Substrates of Hypoglycemia Unawareness in Type 1 DiabetesR56DK099137 · NIDDK · UNIVERSITY OF MINNESOTA · PI MANGIA, SILVIA · 2013 to 2013
$248k
NCATS NIH HHS KL2 TR000113NCATS NIH HHS UL1 TR000114NIBIB NIH HHS P41 EB015894NIBIB NIH HHS P41 EB027061NIDDK NIH HHS R01 DK099137NIDDK NIH HHS R56 DK099137NIH HHS KL2TR000113NIH HHS P30 NS076408NIH HHS P41 EB015894NIH HHS P41 EB027061NIH HHS R01DK099137NIH HHS R56DK099137NIH HHS UL1TR000114NINDS NIH HHS P30 NS076408
6 · The paper itself

Abstract

purposeNeuroimaging pipelines have long been known to generate mildly differing results depending on various factors, including software version. While considered generally acceptable and within the margin of reasonable error, little is known about their effect in common research scenarios such as inter-group comparisons between healthy controls and various pathological conditions. The aim of the presented study was to explore the differences in the inferences and statistical significances in a model situation comparing volumetric parameters between healthy controls and type 1 diabetes patients using various FreeSurfer versions.

methodsT1- and T2-weighted structural scans of healthy controls and type 1 diabetes patients were processed with FreeSurfer 5.3, FreeSurfer 5.3 HCP, FreeSurfer 6.0 and FreeSurfer 7.1, followed by inter-group statistical comparison using outputs of individual FreeSurfer versions.

resultsWorryingly, FreeSurfer 5.3 detected both cortical and subcortical volume differences out of the preselected regions of interest, but newer versions such as FreeSurfer 5.3 HCP and FreeSurfer 6.0 reported only subcortical differences of lower magnitude and FreeSurfer 7.1 failed to find any statistically significant inter-group differences.

conclusionSince group averages of individual FreeSurfer versions closely matched, in keeping with previous literature, the main origin of this disparity seemed to lie in substantially higher within-group variability in the model pathological condition. Ergo, until validation in common research scenarios as case-control comparison studies is included into the development process of new software suites, confirmatory analyses utilising a similar software based on analogous, but not fully equivalent principles, might be considered as supplement to careful quality control.

Indexed as

Magnetic Resonance ImagingNeuroimagingBrainCase-Control StudiesHumansImage Processing, Computer-AssistedSoftwareFreeSurferMagnetic resonance imagingRepeatabilityVolumetry

Identifiers

PMID34988592
PMCPMC8916973

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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.