Abstract #2714

Design and characterization of an RF shield for a 400 MHz birdcage coil in a retrofitted PET camera for preclinical PET-MRI

Nicola Bertolino¹, Thy Nguyen¹, Dhaval Shah¹, Robert Zivadinov^1,2, Marcello Alecci^3,4,5, and Ferdinand Schweser^1,2

¹Buffalo Neuroimaging Analysis Center, Department of Neurology, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY, United States, ²MRI Clinical and Translational Research Center, Jacobs School of Medicine and Biomedical Sciences, University at Buffalo, The State University of New York, Buffalo, NY, United States, ³Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy, ⁴Laboratori Nazionali del Gran Sasso, Istituto Nazionale di Fisica Nucleare, Assergi, L'Aquila, Italy, ⁵Dipartimento di Scienze Fisiche e Chimiche, Istituto SPIN-CNR, Coppito, LAquila, Italy

PET-MRI imaging sets the stage for truly novel imaging approaches, but preclinical hybrid systems, characterized by ultra-high static magnetic field and small bore diameter, are still in the proof-of-concept stage. In this study, we developed an optimized RF coil/shield setup for an ultra-high field compatible prototype PET ring that can be retrofitted to conventional small-animal MRI systems. In particular an original shielding solution was designed and tested with the purpose of maximizing coil efficiency, usable space inside the detector, and PET sensitivity.

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