Azma Mareyam1, Jonathan R. Polimeni1,
James N. Blau1,
1A. A. Martinos Center for Biomedical Imaging, Dept. of Radiology, Masschussetts General Hospital, Charlestown, MA, United States; 2Division of Health Sciences and Technology, Harvard-MIT, Cambridge, MA, United States
Arrays of surface coils employing lumped capacitance are in widespread use at 7T, but become problematic at extremely high fields as stray capacitances and losses from discrete components increase. We constructed coils for 11.7T and 14.1T (500 and 600 MHz) using a double-sided microwave circuit board material milled into overlapping sections. Arrays of these distributed-capacitance coils were characterized, outperforming equivalent lumped-capacitance arrays at loaded to unloaded Q ratios.