The Belgian Hospital Physicists Association (BHPA) is a non profit organization recognised as professional union that gathers medical physicists from Belgium. This Association was founded in 1978. Its purpose is to group, to share and improve the knowledge of this specific field of Physics. Medical physics is, in general, the application of physics concepts, theories, and methods to medicine or healthcare. Medical Physics can be found in three medical departments: Radiotherapy, Nuclear Medicine and Radiology (medical imaging). Due to the never ending appearance of new technologies and techniques for diagnoses and treatments, quality controls and treatment quality have become the main goals of Their work. Their organization wants to ensure accurate and safe use of technology and ionizing radiation in medical procedures such as radiology, nuclear medicine and radiation therapy. They are generally known as medical physicists and are uniquely qualified to link the medical doctor to the patient through the responsible use of technology in both diagnosing and treating people. The main responsibility of the medical physicist is to assure that the radiation prescribed to the patient is delivered accurately and safely.