Evidence map›Paper›PMID 28856799›Full record

ArticleHuman brain mapping2017

Complexity analysis of cortical surface detects changes in future Alzheimer's disease converters.

Juan Ruiz de Miras, Víctor Costumero, Vicente Belloch, Joaquín Escudero, César Ávila, Jorge Sepulcre

Open access · bronzeAbstract read
In one paragraph

Article in Human brain mapping, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 1 pooled it
4.5field-weighted citation impact, top 5% 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

24 citing papers in PubMed, 1 synthesis or guideline pooled it, 59 citations in OpenAlex.

  1. Pooled it
  2. Hippocampal grey matter changes across scales in Alzheimer's Disease.bioRxiv : the preprint server for biology · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 4 institutions in 2 countries.

Juan Ruiz de MirasComputer Science Department, University of Jaén, Jaén, Spain.ORCID 0000-0001-7579-8350
Víctor CostumeroGordon Center for Medical Imaging, Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.ORCID 0000-0002-8743-5239
Vicente BellochERESA Medical Group, Valencia, Spain.
Joaquín EscuderoDepartment of Neurology, General Hospital of Valencia, Valencia, Spain.
César ÁvilaDepartment of Basic and Clinical Psychology and Psychobiology, Jaume I University, Castelló de la Plana, Spain.
Jorge SepulcreGordon Center for Medical Imaging, Division of Nuclear Medicine and Molecular Imaging, Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts.
Harvard University · USUniversitat Jaume I · ESEndesa (Spain) · ESHospital General Universitario De Valencia · ES

Funding

In Vivo Visualization of TAU and Amyloid-Beta Networks for Early AD DetectionK23EB019023 · NIBIB · MASSACHUSETTS GENERAL HOSPITAL · PI SEPULCRE, JORGE · 2014 to 2018
$810k
NIBIB NIH HHS K23 EB019023
6 · The paper itself

Abstract

Alzheimer's disease (AD) is a neurological disorder that creates neurodegenerative changes at several structural and functional levels in human brain tissue. The fractal dimension (FD) is a quantitative parameter that characterizes the morphometric variability of the human brain. In this study, we investigate spherical harmonic-based FD (SHFD), thickness, and local gyrification index (LGI) to assess whether they identify cortical surface abnormalities toward the conversion to AD. We study 33 AD patients, 122 mild cognitive impairment (MCI) patients (50 MCI converters and 29 MCI nonconverters), and 32 healthy controls (HC). SHFD, thickness, and LGI methodology allowed us to perform not only global level but also local level assessments in each cortical surface vertex. First, we found that global SHFD decreased in AD and future MCI converters compared to HC, and in MCI converters compared to MCI nonconverters. Second, we found that local white matter SHFD was reduced in AD compared to HC and MCI mainly in medial temporal lobe. Third, local white-matter SHFD was significantly reduced in MCI converters compared to MCI nonconverters in distributed areas, including the medial frontal lobe. Thickness and LGI metrics presented a reduction in AD compared to HC. Thickness was significantly reduced in MCI converters compared to healthy controls in entorhinal cortex and lateral temporal. In summary, SHFD was the only surface measure showing differences between MCI individuals that will convert or remain stable in the next 4 years. We suggest that SHFD may be an optimal complement to thickness loss analysis in monitoring longitudinal changes in preclinical and clinical stages of AD. Hum Brain Mapp 38:5905-5918, 2017. © 2017 Wiley Periodicals, Inc.

Indexed as

Image Processing, Computer-AssistedMagnetic Resonance ImagingAgedAlzheimer DiseaseCerebral CortexCognitive DysfunctionCohort StudiesDisease ProgressionFemaleFractalsHumansMaleOrgan SizePrognosisWhite MatterAlzheimer's diseasefractal dimensiongyrification indexmild cognitive impairmentspherical harmonicsthickness

Identifiers

PMID28856799
PMCPMC5745046
OpenAlexW2753862631

What OpenQuestion holds

Textmetadata
LicenceTDM
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.