ALEXANDRIA, Va., April 2 -- United States Patent no. 12,265,144, issued on April 1, was assigned to Siemens Healthineers AG (Forchheim, Germany).

"Method for exciting nuclear spins" was invented by Jurgen Herrler (Erlangen, Germany), Patrick Liebig (Erlangen, Germany), Rene Gumbrecht (Herzogenaurach, Germany) and Armin Nagel (Bubenreuth, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Nuclear spins are excited in a region of interest in an object under examination by a radio-frequency pulse. During at least one phase of the radio-frequency pulse, excitation fields are transmitted while magnetic field gradients are simultaneously applied so that the magnetization of the nuclear spins moves on a traject...