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Abstract #2485

Acoustic evaluation of carbon fiber RF shield structure for a 3T head-only imaging system

Matthew Tarasek1, Tom Foo1, Mark Vermilyea1, Desmond Yeo1, Isabelle Jansen1, Eric Budesheim 1, and Keith Park1
1GE Global Research, Niskayuna, NY, United States

In this work we evaluate the MRI acoustic changes brought about by modifying the RF shield structure in a head-only (MAGNUS) 3T imaging system. Specifically, we use a standardized acoustic measurement protocol to compare sound pressure levels (SPL) in a fiberglass patient-bore structure to a similar newly developed carbon fiber reinforced polymer (CFRP) structure. Results indicate that a modification of the structural properties of the patient-bore structure properties can provide SPL reduction for MR imaging applications, and is likely due to the different modulus of elasticity between the two materials.

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