Barbara L. Beck1,2, Jose A. Muniz, 23,
Ihssan S. Masad, 23, Samuel C. Grant, 23
1McKnight Brain Institute, University
of Florida, Gainesville, FL, United States; 2National High
Magnetic Field Lab, Tallahassee, FL, United States; 3Chemical
& Biomedical Engineering, Florida State University, Tallahassee, FL,
United States
As
MRI continues to evolve to higher static fields, radio frequency coil design
must keep pace. Clockwise and counter
clockwise field components must be considered when predicting signal
intensity distributions. The magnetic
fields of quadrature coils at 500 MHz and 900 MHz were simulated for the
calculation of rotating components and simulated images. In addition, coils
were constructed and tested in vertical bore magnets at 11.7 and 21.1 T. SNR of acquired images indicated 30% gain
of quad coils over linear and approximately linear increase of SNR from 500
to 900 MHz.