Radiation Exposure Effects in Humans - Department of Energy ...
Radiation Exposure Effects in Humans - Department of Energy ...
Radiation Exposure Effects in Humans - Department of Energy ...
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COMPUTERIZED AXIAL<br />
TOMOGRAPHY (CT)<br />
• Has revolutionized diagnostic radiology s<strong>in</strong>ce 1970<br />
• Provides some <strong>of</strong> the largest doses <strong>in</strong> radiation<br />
medic<strong>in</strong>e<br />
- Neonatal abdom<strong>in</strong>al (20 mSv to stomach vs lung x-ray <strong>of</strong><br />
0.15 mSv or p-a chest film <strong>of</strong> 0.01 mSv or dental x-ray <strong>of</strong><br />
0.005 mSv to bra<strong>in</strong>)<br />
• New procedures cont<strong>in</strong>ue to be <strong>in</strong>troduced:<br />
- pre-surgical diagnosis <strong>of</strong> appendicitis (accurate and<br />
cost-effective)<br />
- CT colonography (virtual colonoscopy)<br />
- CT cardiac screen<strong>in</strong>g<br />
- Whole-body screen<strong>in</strong>g <strong>in</strong> asymptomatic patients<br />
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