Radiations its Various effects , procedurs and hazards.pptx

A topic from Community Medicine explained by Dr Farhan Hashmi ; Radiation

1. Radiations Dr Farhan Hashmi FCPS Community Medicine

2. Types of Radiations Ionizing Electromagnetic xrays and gamma rays Corpuscular are alpha and beta particles and protons 90 percent are Natural sources as radon Non Ionizing Uv , light,microwave,infrared

3. Effects Non Stochastic :somatic effects are immediate and delayed Immediate is acute radiation syndrome has cerebral,GIT,hemopoietic and pulmonary effect Stage1: 0-48 hours blood cells killed nausea vomit fatigue Stage 2: 2-3 weeks irritants removal feel better

4. Effects Stage 3 : after 2 weeks hemorrhage infection low blood constituents death if not treated Stage 4 ; recovery after 4 weeks in 6 months

5. Effects of Non ionizing radiations Dark pigmentation sunburns skin aging cataract keratitis conjunctivitis risk of breast cancer leukemia brain tumor

6. Control of external sources of ionizing radiations Justification and Optimization Detection of Radiations by Dosimeter ,Geiger counter,Scintillation counter

7. Noise Wrong sound at wrong place at wrong time Auditory Fatigue more than 90 db Deafness more than 100db Rupture of Tympanic Memebrane more than 160db AEROPLANE Land 150 db

8. Control Research Legislation and Policy Protection of Exposed Effects : irritation headache high BP stress Disturbances Increased Heart rate disturbances in conversations and study students and patients are disturbed