Medical institutions should investigate and deal with the following radiation incidents in a timely manner, record them truthfully, and report to the administrative department of health and relevant departments in a timely manner in accordance with relevant regulations: (1) Diagnosing that the actual dose of radioactive drugs deviates from the prescribed dose by more than 50%; (two) the actual radiation dose of radiotherapy deviates from the prescribed dose by more than 25%; (3) Misirradiation or misuse of radioactive drugs by personnel; (4) Loss, theft and pollution of radioactive isotopes; (five) other radiation events caused by equipment failure or human error.