Subject: Re: Measuring acoustic noise of MRI scanner From: "Abbs, Brandon,Ph.D." <BABBS@xxxxxxxx> Date: Wed, 29 Dec 2010 09:37:01 -0500 List-Archive:<http://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>Hi Fatima, If you just want the sound level, then I don't see why you would want to get any fancier than the MRI-compatible meter you found. However, I think it would be worth the trouble to be able to analyze the noise produced by your gradient pulse in more detail at some point, depending on the type of experiment you are planning. Here is a link to a more detailed analysis done using microphones in the scanner, including the effects of different EPI parameters and references to other relevant work: http://onlinelibrary.wiley.com/doi/10.1002/jmri.20526/abstract -------------------------------- Brandon Abbs, PhD Postdoctoral Research Fellow Brigham and Women's Hospital Harvard Medical School -------------------------------- -----Original Message----- From: AUDITORY - Research in Auditory Perception [mailto:AUDITORY@xxxxxxxx On Behalf Of Fatima Husain Sent: Tuesday, December 28, 2010 10:30 PM To: AUDITORY@xxxxxxxx Subject: [AUDITORY] Measuring acoustic noise of MRI scanner I am trying to set up a relatively easy method to measure acoustic noise within MRI scanners, as close to the bore as possible. I have come up with two scenarios, wondering if anyone has any experience with either? 1] measure noise using an MRI-compatible sound level meter, such as (http://www.allmri.com/product_info.php?language=en&info=p282_mrt-lautstaerkepeg elmessung.html&) 2] use a calibrated microphone, extension cable threaded through a wave guide and an external integrating sound level meter, such as instruments from Casella Cel (casellausa.com) Thanks in advance! Fatima -- Fatima Husain, Ph.D. Auditory Cognitive Neuroscience Lab Assistant Professor, Speech and Hearing Science and the Beckman Institute University of Illinois husainf@xxxxxxxx husainf@xxxxxxxx www.acnlab.com The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.