US Patent Issued to VARIAN MEDICAL SYSTEMS on Feb. 25 for "SRS contoured multi-layer multileaf collimator" (California Inventors)

ALEXANDRIA, Va., Feb. 26 -- United States Patent no. 12,233,284, issued on Feb. 25, was assigned to VARIAN MEDICAL SYSTEMS INC. (Palo Alto, Calif.).

"SRS contoured multi-layer multileaf collimator" was invented by Ross B Hannibal (Saratoga, Calif.), Paul Baturin (Santa Clara, Calif.) and David Schaal (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes a first multileaf collimator comprising a plurality of pairs of beam-blocking leaves each comprising an end portion. The end portions of the beam-blocking leaves of one pair are contoured to allow forming a first aperture when the beam-blocking leaves of the pair are closed. The first aperture has a closed shape such as a cir...