MRI acoustic noise: sound pressure and frequency analysis

Journal of Magnetic Resonance Imaging : JMRI
S A CounterE Borg

Abstract

The large gradient coils used in MRI generate, simultaneously with the pulsed radiofrequency (RF) wave, acoustic noise of high intensity that has raised concern regarding hearing safety. The sound pressure levels (SPLs) and power spectra of MRI acoustic noise were measured at the position of the human head in the isocenter of five MRI systems and with 10 different pulse sequences used in clinical MR scanning. Each protocol, including magnetization-prepared rapid gradient echo (MP-RAGE; 113 dB SPL linear), fast gradient echo turbo (114 dB SPL linear), and spin echo T1/2 mm (117 dB SPL linear), was found to have the high SPLs, rapid pulse rates, amplitude-modulated pulse envelopes, and multipeaked spectra. Since thickness and SPL were inversely related, the T1-weighted images generated more intense acoustic noise than the proton-dense T2-weighted measures. The unfiltered linear peak values provided more accurate measurements of the SPL and spectral content of the MRI acoustic noise than the commonly used dB A-weighted scale, which filters out the predominant low frequency components. Fourier analysis revealed predominantly low frequency energy peaks ranging from .05 to approximately 1 kHz, with a steep high frequency cutoff for e...Continue Reading

References

Aug 1, 1992·Electroencephalography and Clinical Neurophysiology·S A Counter, E Borg
Dec 1, 1992·The Annals of Otology, Rhinology, and Laryngology·G F Laurell
Nov 1, 1989·Radiology·R HurwitzM N Brant-Zawadzki
Nov 1, 1989·Radiology·A M GoldmanP C Friedlander
Feb 1, 1989·Radiology·M E QuirkJ F Lingley
Nov 1, 1988·Radiology·R E BrummettP Charuhas

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Citations

Feb 9, 1999·Human Brain Mapping·T M TalavageR M Weisskoff
Aug 10, 2000·Journal of Magnetic Resonance Imaging : JMRI·J R FosterR W Bowtell
Aug 10, 2000·Journal of Magnetic Resonance Imaging : JMRI·M McJury, F G Shellock
Dec 16, 1998·Journal of Magnetic Resonance Imaging : JMRI·K H TaberL Maturi
Aug 22, 2008·Magma·S SchmitterL R Schad
Jan 8, 2013·Hearing Research·Yongmin Chang, Sang-Heun Lee
Nov 22, 2013·PloS One·Stavros SkourasStefan Koelsch
Aug 31, 2002·Radiology·Adriaan MoelkerPeter M T Pattynama
Oct 29, 2000·The Journal of the Acoustical Society of America·M E RaviczN Y Kiang
Mar 13, 2014·The Journal of the Acoustical Society of America·Joshua M InouyeDavid I Inouye
Jul 31, 2004·Radiology·Frank G Shellock, John V Crues
Aug 15, 2001·Magma·T LoennekerJ Hennig
Jul 16, 2015·Journal of Magnetic Resonance Imaging : JMRI·Sajan Goud LingalaKrishna S Nayak
Mar 11, 2008·Journal of Magnetic Resonance·Terence W NixonRobin A de Graaf
Jul 21, 2005·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Nanyin ZhangWei Chen
Jun 18, 2004·Human Brain Mapping·Carrie J ScarffBradley G Goodyear
Nov 6, 2003·Human Brain Mapping·Adriaan Moelker, Peter M T Pattynama
Jun 20, 2003·Journal of Magnetic Resonance Imaging : JMRI·Dardo G Tomasi, Thomas Ernst
Aug 21, 2008·IEEE Transactions on Bio-medical Engineering·Carlos V Rizzo SierraHendrikus Diek Duifhuis
Sep 6, 2005·Annales d'oto-laryngologie et de chirurgie cervico faciale : bulletin de la Société d'oto-laryngologie des hôpitaux de Paris·T MomO Sterkers
Jul 17, 2015·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Dan MaMark A Griswold
Dec 28, 2012·Magnetic Resonance in Medical Sciences : MRMS : an Official Journal of Japan Society of Magnetic Resonance in Medicine·Toshiharu NakaiSachiko Yamaguchi
Sep 24, 1999·NeuroImage·P BelinB Pike
Feb 25, 2003·Neonatal Network : NN·Isabell B Purdy, Dorothy J Wiley
Jan 30, 2015·Advances in Neonatal Care : Official Journal of the National Association of Neonatal Nurses·Lina Merete M Knudsen, Anne Moen
Mar 14, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P A BandettiniJ S Hyde
Oct 15, 1998·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·P M JakobR R Edelman
Dec 20, 2008·Anesthesia and Analgesia·Roger DzwonczykSergio D Bergese
Feb 19, 2000·Magnetic Resonance in Medicine : Official Journal of the Society of Magnetic Resonance in Medicine·Y YangD A Silbersweig
Feb 13, 2001·Journal of Magnetic Resonance Imaging : JMRI·D L PriceR I Kitney
May 26, 2017·Journal of Magnetic Resonance Imaging : JMRI·Lawrence P Panych, Bruno Madore
Mar 6, 2004·Nihon Hoshasen Gijutsu Gakkai zasshi·Tosiaki Miyati
Feb 26, 2021·Journal of Magnetic Resonance Imaging : JMRI·Mark J McJury
May 5, 2021·Journal of Magnetic Resonance Imaging : JMRI·Hannah R KurdilaSunder Rajan

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