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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