Lesson 1: Ionising radiation basics and ALARA · 8 min
Explain which imaging uses ionising radiation and the three principles of protection: justification, optimisation (ALARA) and dose limits.
Learners prepare on their own, you answer questions live, and the surveys tell you what stuck. 16 fields to fill in with your own policy, contacts and locations; each one is highlighted inside the course.



What learners can do at the end of each lesson. Minutes are an estimate.
Explain which imaging uses ionising radiation and the three principles of protection: justification, optimisation (ALARA) and dose limits.
Describe who refers, justifies and carries out an exposure, and the checks before every exposure (identity, pregnancy, justification).
Use time, distance and shielding, wear protective equipment and a dosimeter correctly, and follow local rules.
Keep the MR controlled access area safe: screen everyone, check MR labels and know the emergency rules.
Recognise and report radiation and MRI incidents and near misses through the right routes.
Final assessment · Completion