Evidence map›Paper›PMID 25273831›Full record

ArticleJournal of orthopaedic research : official publication of the Orthopaedic Research Society2015

Population average T2 MRI maps reveal quantitative regional transformations in the degenerating rabbit intervertebral disc that vary by lumbar level.

John T Martin, Christopher M Collins, Kensuke Ikuta, Robert L Mauck, Dawn M Elliott, Yeija Zhang, D Greg Anderson, Alexander R Vaccaro, Todd J Albert, Vincent Arlet and 1 more

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Journal of orthopaedic research : official publication of the Orthopaedic Research Society, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
1.5field-weighted citation impact, top 20% 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

25 citing papers in PubMed, 29 citations in OpenAlex.

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  8. Lumbar intervertebral disc diurnal deformations and T2 and T1rho relaxation times vary by spinal level and disc region.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 · 2022
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  17. Quantitative MRI correlates with histological grade in a percutaneous needle injury mouse model of disc degeneration.Journal of orthopaedic research : official publication of the Orthopaedic Research Society · 2018
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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

11 authors at 5 institutions in 1 country.

John T MartinTranslational Musculoskeletal Research Center, Philadelphia VA Medical Center, Philadelphia, Pennsylvania; Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania; Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania.
Christopher M Collins
Kensuke Ikuta
Robert L Mauck
Dawn M Elliott
Yeija Zhang
D Greg Anderson
Alexander R Vaccaro
Todd J Albert
Vincent Arlet
Harvey E Smith
University of Pennsylvania · USThomas Jefferson University · USPhiladelphia VA Medical Center · USNew York University · USUniversity of Delaware · US

Funding

TR&D 4: Revealing Microstructure: Biophysical modeling and validation for discovery and clinical careP41EB017183 · NIBIB · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI Hersh Chandarana · 2014 to 2026
$19.3M
High Field MRI: Limitations and SolutionsR01EB000454 · NIBIB · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI COLLINS, CHRISTOPHER M · 2002 to 2012
$11.9M
The Role of Hyaluronic Acid Receptors in Tendon HealingP30AR050950 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI WEHRLI, FELIX W · 2006 to 2015
$6.2M
Cell Therapy for the degenerating intervertebral discsK08HD049598 · NICHD · THOMAS JEFFERSON UNIVERSITY · PI ZHANG, YEJIA · 2007 to 2010
$566k
Tissue-Engineered Constructs for Treatment of Intervertebral Disc DegenerationIK2RX001476 · VA · PHILADELPHIA VA MEDICAL CENTER · PI SMITH, HARVEY E. · 2015 to 2020
–
NIAMS NIH HHS P30 AR050950NIBIB NIH HHS P41 EB017183NIBIB NIH HHS R01 EB000454NICHD NIH HHS 5K08HD049598NICHD NIH HHS K08 HD049598RRD VA IK2 RX001476
6 · The paper itself

Abstract

Magnetic resonance imaging (MRI) with T2-weighting is routinely performed to assess intervertebral disc degeneration. Standard clinical evaluations of MR images are qualitative, however, and do not focus on region-specific alterations in the disc. Utilizing a rabbit needle puncture model, T2 mapping was performed on injured discs to develop a quantitative description of the degenerative process following puncture. To do so, an 18G needle was inserted into four discs per rabbit (L3/L4 to L6/L7) and T2 maps were generated pre- and 4 weeks post-injury. Individual T2 maps were normalized to a disc-specific coordinate system and then averaged for pre- and post-injury population composite T2 maps. We also developed a method to automatically segment the nucleus pulposus by fitting the NP region of the T2 maps with modified 2-D and 3-D Gaussian distribution functions. Puncture injury produced alterations in MR signal intensity in a region-specific manner mirroring human degeneration. Population average T2 maps provided a quantitative representation of the injury response, and identified deviations of individual degenerate discs from the pre-injury population. We found that the response to standardized injury was modest at lower lumbar levels, likely as a result of increased disc dimensions. These tools will be valuable for the quantitative characterization of disc degeneration in future clinical and pre-clinical studies.

Indexed as

AnimalsDisease Models, AnimalIntervertebral Disc DegenerationLumbar VertebraeMagnetic Resonance ImagingNormal DistributionRabbitsRadiographySensitivity and Specificitydegenerationintervertebral discMRIrabbitT2 mapping

Identifiers

PMID25273831
PMCPMC4426209
OpenAlexW1599858013

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.