ADMINISTERED 5,746 EXAMS IN DIAGNOSTIC RADIOLOGY, INTERVENTIONAL RADIOLOGY, RADIATION ONCOLOGY, MEDICAL PHYSICS, AND SUBSPECIALTIES. THE OBJECTIVE OF EXAMS IS TO DETERMINE IF CANDIDATES HAVE ACQUIRED THE REQUISITE STANDARD OF KNOWLEDGE, SKILL AND UNDERSTANDING ESSENTIAL TO THE PRACTICE OF DIAGNOSTIC RADIOLOGY, INTERVENTIONAL RADIOLOGY, RADIATION ONCOLOGY OR MEDICAL PHYSICS. THE OBJECTIVE OF CONTINUING CERTIFICATION IS TO PROVIDE CONTINUOUS QUALITY IMPROVEMENT, PROFESSIONAL DEVELOPMENT AND QUALITY PATIENT CARE. ENROLLMENT IN THE MAINTENANCE OF CERTIFICATION WAS APPROXIMATELY 35,200 DIPLOMATES.