The Biological and Medical Effects of Radiation
The Biological and Medical Effects of Radiation
The Biological and Medical Effects of Radiation
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Short Term <strong>Effects</strong> (6-8 Wks)<br />
• Skin<br />
• Germinal layer is the principal i site <strong>of</strong> damage<br />
• Initial response is erythema (reddening)<br />
• Due to blood vessel congestion <strong>and</strong> edema<br />
• Lungs<br />
• Most radiosensitive organ to radiation<br />
• <strong>Radiation</strong> pneumonitis<br />
• Leads to pulmonary insufficiency <strong>and</strong> death in few months<br />
• Ovaries<br />
• Single dose 1-2 Gy will cause temporary sterility. Suppress<br />
menstruation for up to 3 yrs. 4 Gy will cause permanent sterility.<br />
• Testicles<br />
• 0.1 Gy will cause low sperm count for up to a year.<br />
• 2.5 Gy will cause sterility for 2 to 3 years or more.<br />
• 4 Gy will cause permanent sterility.
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