Evidence map›Paper›PMID 22179972›Full record

ArticleMagnetic resonance in medicine2012

Multivariate analysis of cartilage degradation using the support vector machine algorithm.

Ping-Chang Lin, Onyi Irrechukwu, Remy Roque, Brynne Hancock, Kenneth W Fishbein, Richard G Spencer

Abstract read
In one paragraph

Article in Magnetic resonance in medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

17 citing papers in PubMed, 34 citations in OpenAlex.

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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

6 authors at 2 institutions in 1 country.

Ping-Chang LinMagnetic Resonance Imaging and Spectroscopy Section, National Institute on Aging, National Institutes of Health, Baltimore, Maryland 21224, USA.
Onyi Irrechukwu
Remy Roque
Brynne Hancock
Kenneth W Fishbein
Richard G Spencer
National Institute on Aging · USNational Institutes of Health · US

Funding

Improving Sensitivity and Specificity of Parametric MRI Assessment of CartilageZIAAG000922 · NIA · NATIONAL INSTITUTE ON AGING · PI SPENCER, RICHARD · 2009 to 2017
$6.3M
Magnetic Resonance Analysis of Connective Tissue and MuscleZIAAG000924 · NIA · NATIONAL INSTITUTE ON AGING · PI SPENCER, RICHARD · 2009 to 2025
$3.2M
Magnetic Resonance Analysis of Connective Tissue and MuscleZ01AG000924 · NIA · NATIONAL INSTITUTE ON AGING · PI SPENCER, RICHARD · 2008 to 2008
$44k
Intramural NIH HHS Z01 AG000924
6 · The paper itself

Abstract

An important limitation in MRI studies of early osteoarthritis is that measured MRI parameters exhibit substantial overlap between different degrees of cartilage degradation. We investigated whether multivariate support vector machine analysis would permit improved tissue characterization. Bovine nasal cartilage samples were subjected to pathomimetic degradation and their T(1), T(2), magnetization transfer rate (k(m) ), and apparent diffusion coefficient (ADC) were measured. Support vector machine analysis performed using certain parameter combinations exhibited particularly favorable classification properties. The areas under the receiver operating characteristic (ROC) curve for detection of extensive and mild degradation were 1.00 and 0.94, respectively, using the set (T(1), k(m), ADC), compared with 0.97 and 0.60 using T(1), the best univariate classifier. Furthermore, a degradation probability for each sample, derived from the support vector machine formalism using the parameter set (T(1), k(m), ADC), demonstrated much stronger correlations (r(2) = 0.79-0.88) with direct measurements of tissue biochemical components than did even the best-performing individual MRI parameter, T(1) (r(2) = 0.53-0.64). These results, combined with our previous investigation of Gaussian cluster-based tissue discrimination, indicate that the combinations (T(1), k(m)) and (T(1), k(m), ADC) may emerge as particularly useful for characterization of early cartilage degradation.

Indexed as

AlgorithmsAnimalsCartilage, ArticularCattleData Interpretation, StatisticalImage EnhancementImage Interpretation, Computer-AssistedIn Vitro TechniquesMultivariate AnalysisOsteoarthritisReproducibility of ResultsSensitivity and Specificity

Identifiers

PMID22179972
PMCPMC3310939
OpenAlexW2072306403

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.