Abstract #4211

Damping of acoustic noise for fetal/neonatal MRI and MR-guided radiotherapy

Erik Rutger Huijing¹, Koenraad Rhebergen², Patrick Stroosnijder³, Dennis Klomp¹, Jannie Wijnen¹, Mariëlle Philippens⁴, Kim Annink⁵, and Stefano Mandija^4,6

¹Department of Radiology, University Medical Center Utrecht, Utrecht, Netherlands, ²Department of Otorhinolaryngology and Head & Neck Surgery, University Medical Center Utrecht, Utrecht, Netherlands, ³Medical Technology & Clinical Physics, University Medical Center Utrecht, Utrecht, Netherlands, ⁴Department of Radiotherapy, University Medical Center Utrecht, Utrecht, Netherlands, ⁵Department of Neonatology, University Medical Center Utrecht, Utrecht, Netherlands, ⁶Computational Imaging Group for MR Diagnostic & Therapy, University Medical Center Utrecht, Utrecht, Netherlands

In this work, we investigated the noise attenuation provided by different acoustic hood designs particularly relevant for fetal/neonatal MRI and MRI-guided radiotherapy. We experimentally demonstrated that both increasing hood length and thickness have a positive influence on acoustic noise reduction up to 20dB for the investigated scenarios. These results will provide experimental information useful to design a new acoustic hood for different applications, e.g. neonatal MRI and MR-guided radiotherapy.

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