The purpose of this study was to determine the expected sound exposure to the neonate during neonatal brain protocols. To accomplish this, 7 neonatal brain protocols were recorded on 7 different MRI machines across 4 vendors. Neonatal protocol sound levels straddled existing notions of risk, exceeding sound levels known to cause non-auditory stress responses in neonates but not exceeding the IEC MRI hearing safety limit. These results indicate that these sound levels could be risky for the neonate, but that further work is required to clarify this.
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