In vivo Intrauterine Sound Pressure and Temperature Measurements during Magnetic Resonance Imaging (1.5 T) in Pregnant Ewes
Objective: To investigate the influence of several magnetic resonance imaging (MRI) sequences on amniotic fluid temperature and intrauterine sound pressure. Material and Methods: Temperature and sound pressure measurements during MRI (1.5 T) in pregnant ewes were done. Linear levels and third octave...
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| Veröffentlicht in: | Fetal diagnosis and therapy 2008-01, Vol.24 (3), p.203-210 |
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| creator | Ruckhäberle, E. Nekolla, S.G. Ganter, C. Schneider, K.T.M. Peter, A. Raidt, A. Kovacs, L. Brockmeier, S.J. Schwaiger, M. Oberhoffer, R. Papadopulos, N.A. |
| description | Objective: To investigate the influence of several magnetic resonance imaging (MRI) sequences on amniotic fluid temperature and intrauterine sound pressure. Material and Methods: Temperature and sound pressure measurements during MRI (1.5 T) in pregnant ewes were done. Linear levels and third octave band spectra were compared. Results: No significant changes in the temperature of amniotic fluid were observed. Intrauterine summation levels reached peak levels up to 103.0 dB(A) before starting the MRI sequence and levels up to 116.0 dB(A) during a real-time sequence. Evaluating the octave band spectra, peak levels did not exceed 100.0 dB(L). Conclusions: Our delimited data revealed no harm for the fetus by an increase in amniotic fluid temperature or hazards for the fetal auditory system by different MRI sequences. |
| doi_str_mv | 10.1159/000151339 |
| format | Article |
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Material and Methods: Temperature and sound pressure measurements during MRI (1.5 T) in pregnant ewes were done. Linear levels and third octave band spectra were compared. Results: No significant changes in the temperature of amniotic fluid were observed. Intrauterine summation levels reached peak levels up to 103.0 dB(A) before starting the MRI sequence and levels up to 116.0 dB(A) during a real-time sequence. Evaluating the octave band spectra, peak levels did not exceed 100.0 dB(L). Conclusions: Our delimited data revealed no harm for the fetus by an increase in amniotic fluid temperature or hazards for the fetal auditory system by different MRI sequences.</description><identifier>ISSN: 1015-3837</identifier><identifier>EISSN: 1421-9964</identifier><identifier>DOI: 10.1159/000151339</identifier><identifier>PMID: 18753758</identifier><language>eng</language><publisher>Basel, Switzerland: Karger</publisher><subject>Acoustics ; Animals ; Biological and medical sciences ; Delivery. Postpartum. Lactation ; Female ; Fetus - physiology ; General aspects ; Gynecology. Andrology. Obstetrics ; Hearing - physiology ; Magnetic Resonance Imaging - adverse effects ; Medical sciences ; Pregnancy ; Risk Assessment ; Sheep - physiology ; Sound ; Sound Spectrography ; Temperature</subject><ispartof>Fetal diagnosis and therapy, 2008-01, Vol.24 (3), p.203-210</ispartof><rights>2008 S. Karger AG, Basel</rights><rights>2008 INIST-CNRS</rights><rights>Copyright 2008 S. Karger AG, Basel.</rights><rights>Copyright (c) 2008 S. 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Material and Methods: Temperature and sound pressure measurements during MRI (1.5 T) in pregnant ewes were done. Linear levels and third octave band spectra were compared. Results: No significant changes in the temperature of amniotic fluid were observed. Intrauterine summation levels reached peak levels up to 103.0 dB(A) before starting the MRI sequence and levels up to 116.0 dB(A) during a real-time sequence. Evaluating the octave band spectra, peak levels did not exceed 100.0 dB(L). Conclusions: Our delimited data revealed no harm for the fetus by an increase in amniotic fluid temperature or hazards for the fetal auditory system by different MRI sequences.</description><subject>Acoustics</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Delivery. Postpartum. Lactation</subject><subject>Female</subject><subject>Fetus - physiology</subject><subject>General aspects</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Hearing - physiology</subject><subject>Magnetic Resonance Imaging - adverse effects</subject><subject>Medical sciences</subject><subject>Pregnancy</subject><subject>Risk Assessment</subject><subject>Sheep - physiology</subject><subject>Sound</subject><subject>Sound Spectrography</subject><subject>Temperature</subject><issn>1015-3837</issn><issn>1421-9964</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>8G5</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpdkc9P3TAMx6MJNH7twB2haNImOJQlTdMmxwmx7Umgoe1xrtzEqQqv6SNpmRD__FK9J5A4ObY__tqxCTnm7IJzqb8xxrjkQugPZJ8XOc-0Loud9E7hTChR7ZGDGO8TpipRfiR7XFVSVFLtk5eFp0_d00AXfgwwjRg6j_TvMHlLbwPGOAWkkJwl9msMMM7-DcIc79GPkdoplbT0BlqPY2foH4yDB2-QLnpo59QZv5B0eU47P0u2KTnSq38Yj8iug1XET1t7SO5-XC0vf2XXv38uLr9fZ0bocszAgLMAOVjBhFUNM8xAXlSuaNA4idZqLaTjTVMpzpC50kDTFMLNf2xsJQ7J143uOgyPE8ax7rtocLUCj8MU61KXSkulEvj5HXg_TMGn2eo8z4XMuZ7VzjeQCUOMAV29Dl0P4bnmrJ7PUb-eI7GnW8Gp6dG-kdv9J-DLFoBoYOVCWlwXX7mcVWWh5dz0ZMM9QGgxvAlt-vwHoVeb2g</recordid><startdate>20080101</startdate><enddate>20080101</enddate><creator>Ruckhäberle, E.</creator><creator>Nekolla, S.G.</creator><creator>Ganter, C.</creator><creator>Schneider, K.T.M.</creator><creator>Peter, A.</creator><creator>Raidt, A.</creator><creator>Kovacs, L.</creator><creator>Brockmeier, S.J.</creator><creator>Schwaiger, M.</creator><creator>Oberhoffer, R.</creator><creator>Papadopulos, N.A.</creator><general>Karger</general><general>S. 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Postpartum. Lactation</topic><topic>Female</topic><topic>Fetus - physiology</topic><topic>General aspects</topic><topic>Gynecology. Andrology. 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Material and Methods: Temperature and sound pressure measurements during MRI (1.5 T) in pregnant ewes were done. Linear levels and third octave band spectra were compared. Results: No significant changes in the temperature of amniotic fluid were observed. Intrauterine summation levels reached peak levels up to 103.0 dB(A) before starting the MRI sequence and levels up to 116.0 dB(A) during a real-time sequence. Evaluating the octave band spectra, peak levels did not exceed 100.0 dB(L). Conclusions: Our delimited data revealed no harm for the fetus by an increase in amniotic fluid temperature or hazards for the fetal auditory system by different MRI sequences.</abstract><cop>Basel, Switzerland</cop><pub>Karger</pub><pmid>18753758</pmid><doi>10.1159/000151339</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Fetal diagnosis and therapy, 2008-01, Vol.24 (3), p.203-210 |
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| source | Karger Journal Archive Collection; MEDLINE; Karger Journals; Alma/SFX Local Collection |
| subjects | Acoustics Animals Biological and medical sciences Delivery. Postpartum. Lactation Female Fetus - physiology General aspects Gynecology. Andrology. Obstetrics Hearing - physiology Magnetic Resonance Imaging - adverse effects Medical sciences Pregnancy Risk Assessment Sheep - physiology Sound Sound Spectrography Temperature |
| title | In vivo Intrauterine Sound Pressure and Temperature Measurements during Magnetic Resonance Imaging (1.5 T) in Pregnant Ewes |
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