Kevin Berbaum, now a professor emeritus of Radiology at the University of Iowa, dedicated more than 30 years of his career to the study of satisfaction of search (SOS), the phenomenon where the detection of one lesion impairs detection of others in an image. He studied this extensively, focusing on chest radiographs, chest CTs, abdominal contrast patients, and multi-trauma patients, and his insights into the nature of SOS have defined the field. He also made significant contributions to receiver operating characteristic (ROC) analysis by characterizing "proper" ROC curves and creating — with Donald Dorfman and Charlie Metz — the Dorfman-Berbaum-Metz algorithm for analyzing multi-reader observer performance studies, one of the most utilized methods for carrying out such analysis since its 1992 creation.