Section I: Introduction. Section II: Recommendation and Standards for Protection Against Nonionizing Radiation Sources in Medicine. EMF: Summary and basics of the International Commission on Nonionizing Radiation Protection (ICNIRP) standards for nonionizing EMF radiation. Lasers: Summary and basics of International Electrotechnical Commission (IEC). Standards for ultrasound (International Electrotechnical Commission). Section III: Radiation Protection in use of non-ionizing radiation in Medicine. Safe use of Nonionizing Electromagnetic Fields (EMF) in Medicine. Magnetic Resonance Imaging (MRI).