Radiation Exposure

There is no safe level of exposure and there is no dose of radiation so low that the risk of a malignancy is zero — Dr. Karl Z. Morgan, dubbed the father of Health Physics

Radiation Exposure

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Why We Should Think Twice About Getting A CT Scan

People fear radiation for good reason. All ionizing radiation passes unimpeded through cells of the body, mutating or destroying DNA along the way. The danger level depends on the dose and the length of exposure. We're exposed to small amounts of radiation all the time -- from cosmic rays to the normal radioactive decay of soil, rocks and building materials. Even the granite in the U.S. Capitol Building emits low levels of radiation. These levels are harmless, but a high dose can kill, and prolonged or repeated moderate exposure can lead to cancer.

So why are we afraid of nuclear power, but not worried about the radiation in medical imaging tests, such as a CT scan? Here are a couple…

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Last Updated : Thursday, August 22, 2019