Lantheus Holdings, Inc. is a U.S.-based biotechnology company specializing in the development and manufacturing of diagnostic and therapeutic products, particularly in the fields of oncology and cardiology. Founded in 1956 and headquartered in North Billerica, Massachusetts, Lantheus is known for its innovative technology in imaging diagnostic products, such as contrast agents and radiopharmaceuticals, which enable doctors to effectively diagnose and treat a variety of health conditions, including cancer and heart diseases.