Evidence map›Paper›PMID 31294076›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2019

Factors affecting the harmonization of disease-related metabolic brain pattern expression quantification in [

Rosalie V Kogan, Bas A de Jong, Remco J Renken, Sanne K Meles, Paul J H van Snick, Sandeep Golla, Sjoerd Rijnsdorp, Daniela Perani, Klaus L Leenders, Ronald Boellaard and 1 more

Abstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing 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

8 citing papers in PubMed.

  1. Review
  2. IRMA: Machine learning-based harmonization ofEuropean journal of nuclear medicine and molecular imaging · 2025
    Article
  3. Article
  4. Article
  5. Article
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  7. Article
  8. Review
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

11 authors.

Rosalie V KoganDepartment of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Bas A de JongDepartment of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Remco J RenkenNeuroimaging Center, Department of Neuroscience, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Sanne K MelesDepartment of Neurology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Paul J H van SnickDepartment of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Sandeep GollaDepartment of Radiology and Nuclear Medicine, VU University Medical Center, Amsterdam, The Netherlands.
Sjoerd RijnsdorpDepartment of Medical Physics, Catharina Hospital, Eindhoven, The Netherlands.
Daniela PeraniSan Raffaele University and Division of Neuroscience, San Raffaele Scientific Institute, Milan, Italy.
Klaus L LeendersDepartment of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
Ronald BoellaardDepartment of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
JPND-PETMETPAT Working Group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionThe implementation of spatial-covariance [

methodsFive healthy controls, 5 patients with idiopathic rapid eye movement sleep behavior disorder, and 5 patients with Parkinson's disease were scanned on one positron emission tomography/computed tomography system with multiple image reconstructions. In addition, one Hoffman 3D Brain Phantom was scanned on several positron emission tomography/computed tomography systems using various reconstructions. Effects of image contrast on PDRP scores were also examined.

resultsHuman and phantom raw PDRP scores were systematically influenced by scanner and reconstruction effects. PDRP scores correlated inversely to image contrast. A Gaussian spatial filter reduced contrast while decreasing intercenter score differences. DISCUSSION: Image contrast should be considered in harmonization efforts. A Gaussian filter may reduce noise and intercenter effects without sacrificing sensitivity. Phantom measurements will be important for correcting PDRP score offsets.

Indexed as

FDG-PETHarmonizationHoffman 3D brain phantomNeuroimaging biomarkerPrincipal component analysis

Identifiers

PMID31294076
PMCPMC6595051

What Socratic holds

Textmetadata
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 Socratic graph.