Evidence map›Paper›PMID 24700573›Full record

ArticleMagnetic resonance in medicine2015

Detection of low back pain using pH level-dependent imaging of the intervertebral disc using the ratio of R1ρ dispersion and -OH chemical exchange saturation transfer (RROC).

Qi Liu, Wafa Tawackoli, Gadi Pelled, Zhaoyang Fan, Ning Jin, Yutaka Natsuaki, Xiaoming Bi, Avrom Gart, Hyun Bae, Dan Gazit and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Magnetic resonance in medicine, 2015. 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
1.4field-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

17 citing papers in PubMed, 23 citations in OpenAlex.

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  6. Characterization of microenvironmental changes in the intervertebral discs of patients with chronic low back pain using multiparametric MRI contrasts extracted from Z-spectrum.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

11 authors at 3 institutions in 2 countries.

Qi LiuBiomedical Imaging Research Institute, Cedars-Sinai Medical Center, Los Angeles, California, USA; Department of Biomedical Engineering, Northwestern University, Chicago, Illinois, USA.
Wafa Tawackoli
Gadi Pelled
Zhaoyang Fan
Ning Jin
Yutaka Natsuaki
Xiaoming Bi
Avrom Gart
Hyun Bae
Dan Gazit
Debiao Li
Cedars-Sinai Medical Center · USSiemens Healthcare (United States) · USUniversity of California, Los Angeles · US

Funding

Quantitative Multiparametric MRI to Assess the Effect of Stem Cell Therapy on Chronic Low Back PainR01AR066517 · NIAMS · CEDARS-SINAI MEDICAL CENTER · PI LI, DEBIAO · 2014 to 2024
$5.3M
NIAMS NIH HHS R01 AR066517
6 · The paper itself

Abstract

purposeLow pH is associated with intervertebral disc (IVD)-generated low back pain (LBP). The purpose of this work was to develop an in vivo pH level-dependent magnetic resonance imaging (MRI) method for detecting discogenic LBP, without using exogenous contrast agents.

methodsThe ratio of R1ρ dispersion and chemical exchange saturation transfer (CEST) (RROC) was used for pH-level dependent imaging of the IVD while eliminating the effect of labile proton concentration. The technique was validated by numerical simulations and studies on phantoms and ex vivo porcine spines. Four male (ages 42.8 ± 18.3) and two female patients (ages 55.5 ± 2.1) with LBP and scheduled for discography were examined with the method on a 3.0 Tesla MR scanner. RROC measurements were compared with discography outcomes using paired t-test.

resultsSimulation and phantom results indicated RROC is a concentration independent and pH level-dependent technique. Porcine spine study results found higher RROC value was related to lower pH level. Painful discs based on discography had significant higher RROC values than those with negative diagnosis (P < 0.05).

conclusionRROC imaging is a promising pH level dependent MRI technique that has the potential to be a noninvasive imaging tool to detect painful IVDs in vivo.

Indexed as

AlgorithmsAnimalsBiomarkersHydrogen-Ion ConcentrationHydroxidesImage Interpretation, Computer-AssistedIntervertebral DiscIntervertebral Disc DegenerationLow Back PainMagnetic Resonance ImagingPhantoms, ImagingReproducibility of ResultsSensitivity and SpecificitySwineBiomarkershydroxide ionHydroxidesCESTIntervertebral discpH imagingR1ρ dispersionRROC

Identifiers

PMID24700573
PMCPMC4511600
OpenAlexW1840912252

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.