Evidence map›Paper›PMID 29097415›Full record

ArticleAJNR. American journal of neuroradiology2018

Gadolinium DTPA Enhancement Characteristics of the Rat Sciatic Nerve after Crush Injury at 4.7T.

B J Hill, K R Padgett, V Kalra, A Marcillo, B Bowen, P Pattany, D Dietrich, R Quencer

Open access · hybridAbstract read
In one paragraph

Article in AJNR. American journal of neuroradiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

12 citing papers in PubMed, 15 citations in OpenAlex.

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  11. Diagnostic Efficacy ofNeurochemical research · 2019
    Article
  12. Is Gd-DTPA Necessary in Clinical Practice for Peripheral Nerve Injury?AJNR. American journal of neuroradiology · 2018
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 4 countries.

B J HillFrom the Departments of Radiology (B.J.H., K.R.P., B.B., P.P., R.Q.).ORCID 0000-0002-8433-247X
K R PadgettFrom the Departments of Radiology (B.J.H., K.R.P., B.B., P.P., R.Q.) kpadgett@med.miami.edu.ORCID 0000-0002-6277-5317
V KalraMiller School of Medicine (V.K.), University of Miami, Miami, Florida.ORCID 0000-0002-6486-5252
A MarcilloMiami Project to Cure Paralysis (A.M., D.D.).ORCID 0000-0002-8663-0112
B BowenFrom the Departments of Radiology (B.J.H., K.R.P., B.B., P.P., R.Q.).
P PattanyFrom the Departments of Radiology (B.J.H., K.R.P., B.B., P.P., R.Q.).ORCID 0000-0002-7508-2114
D DietrichMiami Project to Cure Paralysis (A.M., D.D.).ORCID 0000-0002-8732-4942
R QuencerFrom the Departments of Radiology (B.J.H., K.R.P., B.B., P.P., R.Q.).ORCID 0000-0003-3209-1587
Public Works Department Buildings and Roads · INInstitute of Parasitology · CZCentre for Biomedical Engineering and Physics · SEUniversity of Miami · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

background and purposeTraumatic peripheral nerve injury is common and results in loss of function and/or neuropathic pain. MR neurography is a well-established technique for evaluating peripheral nerve anatomy and pathology. However, the Gd-DTPA enhancement characteristics of acutely injured peripheral nerves have not been fully examined. This study was performed to determine whether acutely crushed rat sciatic nerves demonstrate Gd-DTPA enhancement and, if so, to evaluate whether enhancement is affected by crush severity. MATERIALS AND

methodsIn 26 rats, the sciatic nerve was crushed with either surgical forceps (6- to 20-N compressive force) or a microvascular/microaneurysm clip (0.1-0.6 N). Animals were longitudinally imaged at 4.7T for up to 30 days after injury. T1WI, T2WI, and T1WI with Gd-DTPA were performed.

resultsForceps crush injury caused robust enhancement between days 3 and 21, while clip crush injury resulted in minimal-to-no enhancement. Enhancement after forceps injury peaked at 7 days and was seen a few millimeters proximal to, in the region of, and several centimeters distal to the site of crush injury. Enhancement after forceps injury was statistically significant compared with clip injury between days 3 and 7 (

conclusionsGd-DTPA enhancement of peripheral nerves may only occur above a certain crush-severity threshold. This phenomenon may explain the intermittent observation of Gd-DTPA enhancement of peripheral nerves after traumatic injury. The observation of enhancement may be useful in judging the severity of injury after nerve trauma.

Indexed as

AnimalsContrast MediaGadolinium DTPAImage Processing, Computer-AssistedMagnetic Resonance ImagingMaleNerve CrushPeripheral Nerve InjuriesRatsRats, Sprague-DawleySciatic NerveContrast MediaGadolinium DTPA

Identifiers

PMID29097415
PMCPMC7410680
OpenAlexW2766183271

What OpenQuestion holds

Textmetadata
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.