Evidence map›Paper›PMID 34764407›Full record

ArticleScientific reports2021

PET/CT background noise and its effect on speech recognition.

Iva Speck, Valentin Rottmayer, Konstantin Wiebe, Antje Aschendorff, Johannes Thurow, Lars Frings, Philipp T Meyer, Thomas Wesarg, Susan Arndt

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Article
  2. Review
  3. 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

9 authors.

Iva SpeckDepartment of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany. iva.speck@uniklinik-freiburg.de.
Valentin RottmayerDepartment of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany.
Konstantin WiebeDepartment of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany.
Antje AschendorffDepartment of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany.
Johannes ThurowDepartment of Nuclear Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Lars FringsDepartment of Nuclear Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Philipp T MeyerDepartment of Nuclear Medicine, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Hugstetter Straße 55, 79106, Freiburg, Germany.
Thomas Wesarg *Department of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany.
Susan Arndt *Department of Otorhinolaryngology, Head and Neck Surgery, Medical Center-University of Freiburg, Faculty of Medicine, University of Freiburg, Killianstraße 5, 79106, Freiburg, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Positron emission tomography (PET) has been successfully used to investigate central nervous processes, including the central auditory pathway. Unlike early water-cooled PET-scanners, novel PET/CT scanners employ air cooling and include a CT system, both of which result in higher background noise levels. In the present study, we describe the background noise generated by two state-of-the-art air-cooled PET/CT scanners. We measured speech recognition in background noise: recorded PET noise and a speech-shaped noise applied in clinical routine to subjects with normal hearing. Background noise produced by air-cooled PET/CT is considerable: 75.1 dB SPL (64.5 dB(A)) for the Philips Gemini TF64 and 76.9 dB SPL (68.4 dB(A)) for the Philips Vereos PET/CT (Philips Healthcare, The Netherlands). Subjects with normal hearing exhibited better speech recognition in recorded PET background noise compared with clinically applied speech-shaped noise. Speech recognition in both background noises correlated significantly. Background noise generated by PET/CT scanners should be considered when PET is used for the investigation of the central auditory pathway. Speech in PET noise is better than in speech-shaped noise because of the minor masking effect of the background noise of the PET/CT.

Indexed as

Positron Emission Tomography Computed TomographySpeech PerceptionAdultFemaleHearingHumansMaleNoiseSpeechYoung Adult

Identifiers

PMID34764407
PMCPMC8585948

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Registered trials

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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.