Martijn A. Cloos1,
Leoor Anon2, Gang Chen2, Graham C. Wiggins3,
Daniel Sodickson, 23
1Radiology,
New York University School of Medicine, New York, NY, United States; 2The
Sackler Institute of Graduate Biomedical Sciences, New York University School
of Medicine, New York, NY, United States; 3Radiology, NYU Langone
Medical Center, New York, NY, United States
Parallel transmission facilitates greatly enhanced flexibility for RF-pulse design, but can potentially lead to localized RF hot-spots. Commonly used RF safety-concepts rely on coil specific RF-simulations. In this work, we present a novel method for transmit-array evaluation based on a single 15 minute MR experiment. The resulting safety limits, albeit conservative, are sufficiently lenient to facilitate in-vivo evaluation of coil performance. This enables a rapid iterative transmit-array coil design procedure driven by representable in-vivo data without the need for a time-consuming simulation and validation process at every step.