Abstract #3470

Dedicated head-only high-performance gradients in a 3T scanner improve image quality compared to a whole-body gradient design

J. Kevin DeMarco^1,2, H. Douglas Morris², Robert Y. Shih^1,2, Daniel W. Bess³, Luca Marinelli⁴, Vincent B. Ho^1,2, and Thomas K. F. Foo⁴

¹Walter Reed National Military Medical Center, Bethesda, MD, United States, ²Uniformed Services University of the Health Sciences, Bethesda, MD, United States, ³Fort Belvoir Community Hospital, Fort Belvoir, VA, United States, ⁴GE Global Research Center, Niskayuna, NY, United States

Synopsis

Keywords: Gradients, Brain

Ultra-high-performance MAGNUS gradient coils optimized for advanced diffusion imaging were used to obtain routine anatomical brain imaging in a cohort of 31 consecutive subjects enrolled in a mild TBI study. In a blinded review, three neuroradiologists reviewed 3D MPRAGE and 3D T2 FLAIR obtained with MAGNUS and a whole-body 3T scanner (WB3T). Substantial agreement of better overall image quality for MAGNUS vs. WB3T was seen for T2 FLAIR, and mild agreement of better overall image quality for MPRAGE. MAGNUS supports rapid gradient switching and higher gradient strength for additional SNR with 3D T2 FLAIR.

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