ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,728,287, issued on Sept. 8, was assigned to The Regents of the University of California (Oakland, Calif.) and The Board of Regents of the University of Oklahoma (Norman, Okla.).

"Device and method for protoacoustic image- guided proton therapy" was invented by Liangzhong Xiang (Oakland, Calif.) and Yong Chen (Oklahoma City).

According to the abstract* released by the U.S. Patent & Trademark Office: "Proton beams can deliver a highly targeted radiation dose to a narrow volume defined by their Bragg peaks. However, Bragg peak range uncertainties persist during dose delivery. Fortunately, pulsed proton beams generate protoacoustic emissions proportional to absorbed proton energy, thereb...