ALEXANDRIA, Va., Dec. 23 -- United States Patent no. 12,502,554, issued on Dec. 23, was assigned to RefleXion Medical Inc. (Hayward, Calif.).

"Methods for radiation delivery in emission-guided radiotherapy" was invented by Yevgen Voronenko (Sunnyvale, Calif.), Rostem Bassalow (Hayward, Calif.), Peter Olcott (Los Gatos, Calif.), Brent Harper (Pescadero, Calif.) and David Larkin (Menlo Park, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "This application relates to methods for delivering radiation to a positron-emitting target within a subject under continuous PET guidance. Instead of directing radiation at a collinear path along each detected positron line-of-response (LOR), the methods generally inclu...