Evidence map›Paper›PMID 27386278›Full record

ArticleSpringerPlus2016

The relationship between quantitative measures of disc height and disc signal intensity with Pfirrmann score of disc degeneration.

Sara Salamat, John Hutchings, Clemens Kwong, John Magnussen, Mark J Hancock

Abstract read
In one paragraph

Article in SpringerPlus, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing 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

19 citing papers in PubMed.

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  15. New MR-based measures for the evaluation of age-related lumbar paraspinal muscle degeneration.European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2021
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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

5 authors.

Sara SalamatPhysical Therapy Department,Tehran university of Medical Sciences, District 12, Enghelab, Pich-e-Shemiran, Tehran, Iran.
John HutchingsFaculty of Medicine and Health Sciences, Macquarie University, Talavera Rd North Ryde, Sydney, NSW 2109 Australia.
Clemens KwongFaculty of Medicine and Health Sciences, Macquarie University, Talavera Rd North Ryde, Sydney, NSW 2109 Australia.
John MagnussenMacquarie Medical Imaging, Macquarie University Hospital, Talavera Rd North Ryde, Sydney, NSW 2109 Australia.
Mark J HancockFaculty of Medicine and Health Sciences, Macquarie University, Talavera Rd North Ryde, Sydney, NSW 2109 Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo assess the relationship between quantitative measures of disc height and signal intensity with the Pfirrmann disc degeneration scoring system and to test the inter-rater reliability of the quantitative measures.

methodsParticipants were 76 people who had recently recovered from their last episode of acute low back pain and underwent MRI scan on a single 3T machine. At all 380 lumbar discs, quantitative measures of disc height and signal intensity were made by 2 independent raters and compared to Pfirrmann scores from a single radiologist. For quantitative measures of disc height and signal intensity a "raw" score and 2 adjusted ratios were calculated and the relationship with Pfirrmann scores was assessed. The inter-tester reliability of quantitative measures was also investigated.

resultsThere was a strong linear relationship between quantitative disc signal intensity and Pfirrmann scores for grades 1-4, but not for grades 4 and 5. For disc height only, Pfirrmann grade 5 had significantly reduced disc height compared to all other grades. Results were similar regardless of whether raw or adjusted scores were used. Inter-rater reliability for the quantitative measures was excellent (ICC > 0.97).

conclusionsQuantitative measures of disc signal intensity were strongly related to Pfirrmann scores from grade 1 to 4; however disc height only differentiated between grade 4 and 5 Pfirrmann scores. Using adjusted ratios for quantitative measures of disc height or signal intensity did not significantly alter the relationship with Pfirrmann scores.

Indexed as

CorrelationDiagnosisDisc degenerationDisc heightDisc signalImagingLow back painMagnetic resonance imagingPfirrmann scoresReliabilityValidity

Identifiers

PMID27386278
PMCPMC4917505

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Registered trials

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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.