ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,540,995, issued on Feb. 3, was assigned to SHANGHAI UNITED IMAGING HEALTHCARE Co. LTD. (Shnaghai, China).

"Methods and systems for calibrating medical devices" was invented by Xiangbin Fang (Shanghai), Can Liao (Shanghai), Tuota Xing (Shanghai) and Feichao Fu (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for calibrating a medical device is provided. The medical device may include a magnetic resonance (MR) device. The method may include switching a gradient field in at least one gradient direction of the MR device; obtaining a magnetic flux variation in the at least one gradient direction in at least one portion of a spatial region wit...