Objectives: to know the basics of clinical risk and professional interactions with specialists in the Anaesthesia, Resuscitation, Intensive Care and Pain Medicine - to evaluate the contexts of interaction between different specialists and different professionals interacting with Radiology Technicians for the clinical organization in these contexts – Guidelines, Recommendations and Best Practices: which are those of interest to improve the health care services - to acquire the cognitive and practical bases mandatory to rescue clinical emergencies and to perform the minimal standard of cardio-pulmonary resuscitation intervention in crisis management (BLS-D and ILS)