PET/CT background noise and its effect on speech recognition

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...

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Autores principales:	Iva Speck, Valentin Rottmayer, Konstantin Wiebe, Antje Aschendorff, Johannes Thurow, Lars Frings, Philipp T. Meyer, Thomas Wesarg, Susan Arndt
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8da4d37cf1084c9e869105efd66e5d07
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spelling	oai:doaj.org-article:8da4d37cf1084c9e869105efd66e5d072021-11-14T12:19:39ZPET/CT background noise and its effect on speech recognition10.1038/s41598-021-01686-52045-2322https://doaj.org/article/8da4d37cf1084c9e869105efd66e5d072021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01686-5https://doaj.org/toc/2045-2322Abstract 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.Iva SpeckValentin RottmayerKonstantin WiebeAntje AschendorffJohannes ThurowLars FringsPhilipp T. MeyerThomas WesargSusan ArndtNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Iva Speck Valentin Rottmayer Konstantin Wiebe Antje Aschendorff Johannes Thurow Lars Frings Philipp T. Meyer Thomas Wesarg Susan Arndt PET/CT background noise and its effect on speech recognition
description	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.
format	article
author	Iva Speck Valentin Rottmayer Konstantin Wiebe Antje Aschendorff Johannes Thurow Lars Frings Philipp T. Meyer Thomas Wesarg Susan Arndt
author_facet	Iva Speck Valentin Rottmayer Konstantin Wiebe Antje Aschendorff Johannes Thurow Lars Frings Philipp T. Meyer Thomas Wesarg Susan Arndt
author_sort	Iva Speck
title	PET/CT background noise and its effect on speech recognition
title_short	PET/CT background noise and its effect on speech recognition
title_full	PET/CT background noise and its effect on speech recognition
title_fullStr	PET/CT background noise and its effect on speech recognition
title_full_unstemmed	PET/CT background noise and its effect on speech recognition
title_sort	pet/ct background noise and its effect on speech recognition
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8da4d37cf1084c9e869105efd66e5d07
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PET/CT background noise and its effect on speech recognition

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