Mallinckrodt Institute of Radiology, a unit of BJC HealthCare, serves as the Department of Radiology for Washington University in St. Louis School of Medicine. Established in 1930, the institute is recognized for its research ranging from the development of a diagnostic test for gallbladder disease to the development of functional maps of the brain s sensory and language information-processing areas. Its physicians are on the medical staff of the Barnes-Jewish hospitals and St. Louis Children s Hospital. It performs more than 768,000 clinical examinations and procedures annually. The institute provides diagnostic radiology, nuclear medicine and radiation physics services to various hospitals under BJC HealthCare, including Barnes-Jewish, St. Louis Children's, Barnes-Jewish West County and Barnes-Jewish St. Peters. Mallinckrodt Institute of Radiology is spread in an area of more than 400,000 square feet and is located in St. Louis.