Evidence map›Paper›PMID 41050950›Full record

ArticleNeuroimage. Reports2025

Quantitative susceptibility mapping of paramagnetic rim lesions in early multiple sclerosis: A cross-sectional study of brain age and disability.

Lars Skattebøl, Rigmor Lundby, Mathias H Øverås, Piotr Sowa, Elisabeth G Celius, Hanne F Harbo, Wibeke Nordhøy, Einar A Høgestøl, Gro O Nygaard

Abstract read
In one paragraph

Article in Neuroimage. Reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed, 1 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

2 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. 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.

Lars SkattebølDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Rigmor LundbyDivision of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway.
Mathias H ØveråsDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Piotr SowaDivision of Radiology and Nuclear Medicine, Oslo University Hospital, Oslo, Norway.
Elisabeth G CeliusDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Hanne F HarboDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Wibeke NordhøyDepartment of Physics and Computational Analysis, Division of Radiology and Nuclear Medicine, Oslo University Hospital, Norway.
Einar A HøgestølDepartment of Neurology, Oslo University Hospital, Oslo, Norway.
Gro O NygaardDepartment of Neurology, Oslo University Hospital, Oslo, Norway.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: Chronic inflammation in multiple sclerosis is associated with neurodegeneration and progressive functional decline. Quantitative susceptibility mapping (QSM) is an MRI technique that visualizes paramagnetic rim lesions (PRLs), which are indicative of chronic inflammation. In this cross-sectional study, we explored the prevalence of PRLs in multiple sclerosis and assessed their associations with clinical disability, tissue magnetic susceptibility, and brain age predictions. Methods: All participants from the NOR-MS study with a 3T MRI T1-weighted magnetization-prepared rapid gradient echo and QSM were included (n = 42, mean age = 39.4 years, 59.5 % females, median disease duration = 0.1 years [IQR: 0.02-5.42]). The presence and characteristics of PRLs were evaluated by an experienced neuroradiologist. PRL and non-PRL susceptibility were categorized into separate groups through manual segmentation and voxel-wise analysis. We utilized a validated simple fully convolutional network and T1-weighted images to estimate brain age, and its derivative - brain age gap (BAG). Clinical disability was assessed using the Expanded Disability Status Scale (EDSS). Results: PRLs were identified in 14.3 % (n = 6) of study participants, and correlated with EDSS (rho = 0.86, p = 0.03). The mean paramagnetic rim susceptibility was 25.6 ± 14.1 parts per billion and correlated with EDSS (rho = 0.93, p = 0.008). EDSS was significantly higher in the PRL-positive group (median EDSS 2.25 vs 1.5, p = 0.02). The PRL-positive group exhibited a mean 5.6-year higher BAG (p = 0.01) than the PRL-negative group. Conclusion: PRLs were present in a significant subset of study participants with MS and were associated with greater disability and higher BAG.

Indexed as

Brain ageMRIMultiple sclerosisNeurodegenerationParamagnetic rim lesionQuantitative susceptibility mapping

Identifiers

PMID41050950
PMCPMC12489776

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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.