ALEXANDRIA, Va., June 12 -- United States Patent no. 12,296,193, issued on May 13, was assigned to Elekta Ltd. (Crawley, Great Britain).

"Devices and methods for calibrating and controlling collimator leaves" was invented by Martin Broad (Crawley, Great Britain), Ralf Spriestersbach (Crawley, Great Britain) and Christopher Knox (Crawley, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A computer-implemented method for calibrating a multi-leaf collimator of a radiotherapy device. The multi-leaf collimator comprises a plurality of leaves, each leaf comprising an imaging marker, wherein the radiotherapy device includes an imaging device configured to image the leaves. The method comprises: receivin...