What Student Need to Know about Concepts of Radiation Physics In Radio Diagnosis

Radiation physics is the emission or transmission of energy in the form of waves or particles through space or through a material medium. Radiation physics includes electro-magnetic radiation such as radio waves, visible light, and x-rays, particle radiation such as α, β, and neutron radiation and acoustic radiation such as ultrasound, sound, and seismic waves. Radiation may also refer to the energy, waves, or particles being radiated. Radiation, including x-rays, radioactive materials, lasers and ultraviolet radiation is used for: • imaging patients • diagnosing disease • treating patients (eg when unblocking blood vessels in the heart using a special catheter introduced under x-ray control) • monitoring the response to treatment. High-frequency EMR is referred to as ionizing radiation due to the ability to remove an outer electron from an atom. At an atomic level, electrons exist in different shells around the nucleus that correspond to different potential energy levels (eg,