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<br/>Ionising radiation has been used in healthcare since the discovery of x rays over a 100 years ago. Since then, ionising radiation applications and technologies have evolved to become an important part of contemporary medicine, with hundreds of millions of people benefiting from [[diagnostic radiology]], [[interventional procedures]], [[radiation therapy]] and [[nuclear medicine]] every year. In addition, radiation is widely used in [[biomedical research]] and [[veterinary medicine]].