ALEXANDRIA, Va., July 28 -- United States Patent no. 12,693,441, issued on July 28, was assigned to SHANGHAI UNITED IMAGING HEALTHCARE Co. LTD. (Shanghai).

"System and method for calibrating a PET scanner" was invented by Xinyu Lyu (Shanghai), Qixiang Zhang (Shanghai), Wenbing Song (Shanghai), Zijun Ji (Shanghai) and Weiping Liu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system for calibrating a PET scanner are described. The PET scanner may have a field of view (FOV) and multiple detector rings. A detector ring may have multiple detector units. A line of response (LOR) connecting a first detector unit and a second detector unit of the PET scanner may be determined. The LOR may cor...