Evidence map›Paper›PMID 34542771›Full record

ArticleMagma (New York, N.Y.)2022

Sub-millisecond 2D MRI of the vocal fold oscillation using single-point imaging with rapid encoding.

Johannes Fischer, Ali Caglar Özen, Serhat Ilbey, Louisa Traser, Matthias Echternach, Bernhard Richter, Michael Bock

Open access · hybridAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Magma (New York, N.Y.), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
0.7field-weighted citation impact, top 30% 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

2 citing papers in PubMed, 8 citations in OpenAlex.

  1. Article
  2. Investigation Methods for Vocal Onset-A Historical Perspective.Bioengineering (Basel, Switzerland) · 2024
    Article
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

7 authors at 2 institutions in 1 country.

Johannes FischerDepartment of Radiology, Medical Physics, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany. johannes.fischer@uniklinik-freiburg.de.ORCID http://orcid.org/0000-0003-1499-6163
Ali Caglar ÖzenDepartment of Radiology, Medical Physics, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Serhat IlbeyDepartment of Radiology, Medical Physics, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Louisa TraserFreiburg Institute for Musicians' Medicine, Freiburg University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Matthias EchternachDivision of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Head and Neck Surgery, Ludwig-Maximilians-University, Munich, Germany.
Bernhard RichterFreiburg Institute for Musicians' Medicine, Freiburg University Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
Michael BockDepartment of Radiology, Medical Physics, University Medical Center Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany.
University of Freiburg · DELudwig-Maximilians-Universität München · DE

Funding

Deutsche Forschungsgemeinschaft BO 3025/8-1Deutsche Forschungsgemeinschaft LU 1187/6-1
6 · The paper itself

Abstract

objectiveThe slow spatial encoding of MRI has precluded its application to rapid physiologic motion in the past. The purpose of this study is to introduce a new fast acquisition method and to demonstrate feasibility of encoding rapid two-dimensional motion of human vocal folds with sub-millisecond resolution.

methodIn our previous work, we achieved high temporal resolution by applying a rapidly switched phase encoding gradient along the direction of motion. In this work, we extend phase encoding to the second image direction by using single-point imaging with rapid encoding (SPIRE) to image the two-dimensional vocal fold oscillation in the coronal view. Image data were gated using electroglottography (EGG) and motion corrected. An iterative reconstruction with a total variation (TV) constraint was used and the sequence was also simulated using a motion phantom.

resultsDynamic images of the vocal folds during phonation at pitches of 150 and 165 Hz were acquired in two volunteers and the periodic motion of the vocal folds at a temporal resolution of about 600 µs was shown. The simulations emphasize the necessity of SPIRE for two-dimensional motion encoding. DISCUSSION: SPIRE is a new MRI method to image rapidly oscillating structures and for the first time provides dynamic images of the vocal folds oscillations in the coronal plane.

Indexed as

Magnetic Resonance ImagingVocal CordsHumansImaging, Three-DimensionalMotionMovementPhantoms, ImagingDynamic MRIHigh temporal resolution MRIMagnetic resonance imagingSub-millisecond MRIVocal chords

Identifiers

PMID34542771
PMCPMC8995286
OpenAlexW3200414742

What OpenQuestion holds

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LicenceCC BY
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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.