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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, Mariƫlle Philippens4, Kim Annink5, and Stefano Mandija4,6
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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