ALEXANDRIA, Va., June 9 -- United States Patent no. 12,651,335, issued on June 9, was assigned to Wisconsin Alumni Research Foundation (Madison, Wis.).

"Automated CT contrast detection" was invented by John W. Garrett (Middleton, Wis.), Perry J. Pickhardt (Madison, Wis.) and B. Dustin Pooler (Madison, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for automatically determining whether a CT image was taken with or without contrast media uses a segmentation to isolate voxels of a vascularized structure and simple statistical thresholding of the attenuation values of the isolated voxels to provide transparent and robust discrimination. In some embodiments, the phase of the contrast injection can b...