Nuclear medicine is a rapidly evolving and fast-growing field. It is essential for professionals to keep up to date with dynamic developments to ensure their competencies are maintained. Such continuing professional development presents challenges, ?first and foremost recognizing one’s own strengths and weaknesses. Aiming to support nuclear medicine professionals of various degrees of expertise, the International Atomic Energy Agency, Section of Nuclear Medicine and Diagnostic Imaging has developed a self-assessment tool.The content of the self-assessment comprehensively approaches all nuclear medicine applications and is particularly well-suited to professionals studying for licensure exams. Included are questions on diagnostic procedures (including SPECT, PET, and hybrid imaging) as well as questions devoted to the ever-growing area of radionuclide therapies. As such, the module does not focus on any specific field, but comprehensively approaches all of its applications.?The tool has over 100 multiple-choice questions prepared by experts in their respective fields as well as in andragogy and heutagogy. Additional questions are being incorporated. Following registration and log-in, the applicant can access 30 randomly assigned questions at a time.If at least 25 questions are answered correctly within one hour, a certificate of completion is provided. Unlimited tries are possible.