15.To state the adverse reactions of contrastagents in radiology. 16.To identify the adverse effect of ionizing radiation on human i.e. patients,radiation workers and public. 17.To define the principles of radiation protection. 18.To describe the various radiation protection procedures and devices available in medical use.15 15 15. To state the adverse reactions of contrast agents in radiology. 16. To identify the adverse effect of ionizing radiation on human i.e. patients, radiation workers and public. 17. To define the principles of radiation protection. 18. To describe the various radiation protection procedures and devices available in medical use