Evidence map›Paper›PMID 27704872›Full record

ArticleDento maxillo facial radiology2017

MR imaging of the temporomandibular joint: comparison between acquisitions at 7.0 T using dielectric pads and 3.0 T.

Felix P Kuhn, Georg Spinner, Filippo Del Grande, Michael Wyss, Marco Piccirelli, Stefan Erni, Pascal Pfister, Michael Ho, Bert-Ram Sah, Lukas Filli and 4 more

Open access · greenAbstract readComparative Study
PubMed Full text at PMC Publisher
In one paragraph

Article in Dento maxillo facial radiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.6field-weighted citation impact, top 27% 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

8 citing papers in PubMed, 15 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

14 authors at 2 institutions in 2 countries.

Felix P Kuhn1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Georg Spinner2 Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zurich, Switzerland.
Filippo Del Grande3 Department of Diagnostic and Interventional Radiology, Ospedale Regionale di Lugano, Lugano, Switzerland.
Michael Wyss2 Institute for Biomedical Engineering, University of Zurich and ETH Zurich, Zurich, Switzerland.
Marco Piccirelli4 Department of Neuroradiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Stefan Erni5 Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Pascal Pfister1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Michael Ho1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Bert-Ram Sah1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Lukas Filli1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Dominik A Ettlin5 Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Luigi M Gallo5 Center of Dental Medicine, University of Zurich, Zurich, Switzerland.
Gustav Andreisek1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.
Andrei Manoliu1 Institute for Diagnostic and Interventional Radiology, Department of Radiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland.ORCID http://orcid.org/0000-0003-1230-5752
University of Zurich · CHOspedale regionale di Lugano · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo qualitatively and quantitatively compare MRI of the temporomandibular joint (TMJ) at 7.0 T using high-permittivity dielectric pads and 3.0 T using a clinical high-resolution protocol.

methodsInstitutional review board-approved study with written informed consent. 12 asymptomatic volunteers were imaged at 7.0 and 3.0 T using 32-channel head coils. High-permittivity dielectric pads consisting of barium titanate in deuterated suspension were used for imaging at 7.0 T. Imaging protocol consisted of oblique sagittal proton density weighted turbo spin echo sequences. For quantitative analysis, pixelwise signal-to-noise ratio maps of the TMJ were calculated. For qualitative analysis, images were evaluated by two independent readers using 5-point Likert scales. Quantitative and qualitative results were compared using t-tests and Wilcoxon signed-rank tests, respectively.

resultsTMJ imaging at 7.0 T using high-permittivity dielectric pads was feasible in all volunteers. Quantitative analysis showed similar signal-to-noise ratio for both field strengths (mean ± SD; 7.0 T, 13.02 ± 3.92; 3.0 T, 14.02 ± 3.41; two-sample t-tests, p = 0.188). At 7.0 T, qualitative analysis yielded better visibility of all anatomical subregions of the temporomandibular disc (anterior band, intermediate zone and posterior band) than 3.0 T (Wilcoxon signed-rank tests, p < 0.05, corrected for multiple comparisons).

conclusionsMRI of the TMJ at 7.0 T using high-permittivity dielectric pads yields superior visibility of the temporomandibular disc compared with 3.0 T.

Indexed as

AdultFemaleHealthy VolunteersHumansMagnetic Resonance ImagingMaleProspective StudiesSignal-To-Noise RatioTemporomandibular Jointmagnetic fieldsmagnetic resonance imagingsignal-to-noise ratiotemporomandibular jointtemporomandibular joint disc

Identifiers

PMID27704872
PMCPMC5595054
OpenAlexW2529790376

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.