Evidence map›Paper›PMID 33025284›Full record

ArticleMagma (New York, N.Y.)2021

Accuracy and longitudinal reproducibility of quantitative femorotibial cartilage measures derived from automated U-Net-based segmentation of two different MRI contrasts: data from the osteoarthritis initiative healthy reference cohort.

Wolfgang Wirth, Felix Eckstein, Jana Kemnitz, Christian Frederik Baumgartner, Ender Konukoglu, David Fuerst, Akshay Sanjay Chaudhari

Open access · hybridAbstract read
In one paragraph

Article in Magma (New York, N.Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
3.3field-weighted citation impact, top 7% 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

28 citing papers in PubMed, 46 citations in OpenAlex.

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  13. Reproducibility of Quantitative Double-Echo Steady-State TJournal of magnetic resonance imaging : JMRI · 2025
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  15. ShapeMed-Knee: A Dataset and Neural Shape Model Benchmark for Modeling 3D Femurs.medRxiv : the preprint server for health sciences · 2024
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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 at 3 institutions in 4 countries.

Wolfgang WirthDepartment of Imaging and Functional Musculoskeletal Research, Institute of Anatomy and Cell Biology, Paracelsus Medical University Salzburg and Nuremberg, Strubergasse 21, 5020, Salzburg, Austria. wolfgang.wirth@pmu.ac.at.ORCID http://orcid.org/0000-0002-2297-8283
Felix EcksteinDepartment of Imaging and Functional Musculoskeletal Research, Institute of Anatomy and Cell Biology, Paracelsus Medical University Salzburg and Nuremberg, Strubergasse 21, 5020, Salzburg, Austria.
Jana KemnitzDepartment of Imaging and Functional Musculoskeletal Research, Institute of Anatomy and Cell Biology, Paracelsus Medical University Salzburg and Nuremberg, Strubergasse 21, 5020, Salzburg, Austria.
Christian Frederik BaumgartnerETH, Zurich, Switzerland.
Ender KonukogluETH, Zurich, Switzerland.
David FuerstDepartment of Imaging and Functional Musculoskeletal Research, Institute of Anatomy and Cell Biology, Paracelsus Medical University Salzburg and Nuremberg, Strubergasse 21, 5020, Salzburg, Austria.
Akshay Sanjay ChaudhariDepartment of Radiology, Stanford University, Stanford, CA, USA.
Paracelsus Medical University · ATETH Zurich · CHStanford University · US

Funding

NIH HHS N01-AR-2-2258NIH HHS N01-AR-2-2259NIH HHS N01-AR-2-2260NIH HHS N01-AR-2-2261NIH HHS N01-AR-2-2262Paracelsus Medizinische Privatuniversität E-18/27/146-WIKParacelsus Medizinische Privatuniversität PMU-FFF
6 · The paper itself

Abstract

objectiveTo evaluate the agreement, accuracy, and longitudinal reproducibility of quantitative cartilage morphometry from 2D U-Net-based automated segmentations for 3T coronal fast low angle shot (corFLASH) and sagittal double echo at steady-state (sagDESS) MRI.

methods2D U-Nets were trained using manual, quality-controlled femorotibial cartilage segmentations available for 92 Osteoarthritis Initiative healthy reference cohort participants from both corFLASH and sagDESS (n = 50/21/21 training/validation/test-set). Cartilage morphometry was computed from automated and manual segmentations for knees from the test-set. Agreement and accuracy were evaluated from baseline visits (dice similarity coefficient: DSC, correlation analysis, systematic offset). The longitudinal reproducibility was assessed from year-1 and -2 follow-up visits (root-mean-squared coefficient of variation, RMSCV%).

resultsAutomated segmentations showed high agreement (DSC 0.89-0.92) and high correlations (r ≥ 0.92) with manual ground truth for both corFLASH and sagDESS and only small systematic offsets (≤ 10.1%). The automated measurements showed a similar test-retest reproducibility over 1 year (RMSCV% 1.0-4.5%) as manual measurements (RMSCV% 0.5-2.5%). DISCUSSION: The 2D U-Net-based automated segmentation method yielded high agreement compared with manual segmentation and also demonstrated high accuracy and longitudinal test-retest reproducibility for morphometric analysis of articular cartilage derived from it, using both corFLASH and sagDESS.

Indexed as

Cartilage, ArticularContrast MediaFemaleFemurHumansMagnetic Resonance ImagingMaleMiddle AgedOsteoarthritisReproducibility of ResultsTibiaContrast MediaAutomated segmentationCartilageConvolutional neural networkKnee osteoarthritisMagnetic resonance imaging

Identifiers

PMID33025284
PMCPMC8154803
OpenAlexW3091992955

What OpenQuestion holds

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LicenceCC BY
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.