Evidence map›Paper›PMID 29687923›Full record

ArticleMagnetic resonance in medicine2018

Quantitative susceptibility mapping of articular cartilage: Ex vivo findings at multiple orientations and following different degradation treatments.

Olli Nykänen, Lassi Rieppo, Juha Töyräs, Ville Kolehmainen, Simo Saarakkala, Karin Shmueli, Mikko J Nissi

Abstract read
In one paragraph

Article in Magnetic resonance in medicine, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing 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

15 citing papers in PubMed.

  1. Simultaneous 3-D Adiabatic TNMR in biomedicine · 2026
    Article
  2. Article
  3. Article
  4. Review
  5. Quantitative susceptibility and T1Osteoarthritis and cartilage open · 2024
    Article
  6. Epiphyseal cartilage vascular architecture at the distal humeral osteochondritis dissecans predilection site in juvenile pigs.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2024
    Article
  7. QSM Throughout the Body.Journal of magnetic resonance imaging : JMRI · 2023
    Review
  8. Quantitative Susceptibility Mapping versus R2*-based Histogram Analysis for Evaluating Liver Fibrosis: Preliminary Results.Magnetic resonance in medical sciences : MRMS : an official journal of Japan Society of Magnetic Resonance in Medicine · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Evaluation of the Suitability of Miniature Pigs as an Animal Model of Juvenile Osteochondritis Dissecans.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2019
    Article
  14. Article
  15. 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

7 authors.

Olli NykänenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.ORCID 0000-0001-7329-3463
Lassi RieppoResearch Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
Juha TöyräsDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Ville KolehmainenDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.
Simo SaarakkalaResearch Unit of Medical Imaging, Physics and Technology, University of Oulu, Oulu, Finland.
Karin ShmueliDepartment of Medical Physics & Biomedical Engineering, University College London (UCL), London, United Kingdom.ORCID 0000-0001-7520-2975
Mikko J NissiDepartment of Applied Physics, University of Eastern Finland, Kuopio, Finland.ORCID 0000-0002-5678-0689

Funding

Academy of Finland #285909Academy of Finland #293970Academy of Finland #312343Finnish Cultural FoundationNorth Savo Regional fund
6 · The paper itself

Abstract

purposeWe investigated the feasibility of quantitative susceptibility mapping (QSM) for assessing degradation of articular cartilage by measuring ex vivo bovine cartilage samples subjected to different degradative treatments. Specimens were scanned at several orientations to study if degradation affects the susceptibility anisotropy. T2*-mapping, histological stainings, and polarized light microscopy were used as reference methods. Additionally, simulations of susceptibility in layered geometry were performed.

methodsSamples (n = 9) were harvested from the patellae of skeletally mature bovines. Three specimens served as controls, and the rest were artificially degraded. MRI was performed at 9.4T using a 3D gradient echo sequence. QSM and T2* images and depth profiles through the centers of the samples were compared with each other and the histological findings. A planar isotropic model with depth-wise susceptibility variation was used in the simulations.

resultsA strong diamagnetic contrast was seen in the deep and calcified layers of cartilage, while T2* maps reflected the typical trilaminar structure of the collagen network. Anisotropy of susceptibility in cartilage was observed and was found to differ from the T2* anisotropy. Slight changes were observed in QSM and T2* following the degradative treatments. In simulations, anisotropy was observed.

conclusionsThe results suggest that QSM is not sensitive to cartilage proteoglycan content, but shows sensitivity to the amount of calcification and to the integrity of the collagen network, providing potential for assessing osteoarthritis. The simulations suggested that the anisotropy of susceptibility might be partially explained by the layered geometry of susceptibility in cartilage.

Indexed as

AnimalsAnisotropyCartilageCartilage, ArticularCattleCollagenComputer SimulationExtracellular MatrixHindlimbMagnetic Resonance ImagingMicroscopyOsteoarthritisCollagencartilagecollagen matrixMRIosteoarthritisquantitative susceptibility mapping

Identifiers

PMID29687923
PMCPMC6220965

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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.