ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,991, issued on Feb. 3, was assigned to Regents of the University of Minnesota (Minneapolis).

"Static and dynamic non-localized efficiency radio frequency shimming for parallel transmission in magnetic resonance imaging" was invented by Gregory J. Metzger (Minneapolis), Xiaoxuan He (Minneapolis) and Simon Schmidt (Minneapolis).

According to the abstract* released by the U.S. Patent & Trademark Office: "A non-localized efficiency shimming technique is used to generate radio frequency (RF) shimming values for imaging with a multi-channel transmit RF coil that minimizes subject-specific imperfections in the transmit magnetic field (B1+) and reduces or eliminates signal dropout in the ...