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The low doses of radiation used for imaging tests might increase a person’s cancer risk slightly, but it’s important to put this risk into perspective. Here are answers to some of the more common questions people have about radiation risks linked to imaging tests.
7 Μαΐ 2024 · Risks Radiation exposure. During a CT scan, you're briefly exposed to a type of energy called ionizing radiation. The amount of radiation is greater than the amount from a plain X-ray because the CT scan gathers more-detailed information. The low doses of radiation used in CT scans have not been shown to cause long-term harm.
30 Σεπ 2021 · Patients want to know if radiation from mammograms, bone density tests, computed tomography (CT) scans, and so forth will increase their risk of developing cancer. For most women, there's very little risk from routine x-ray imaging such as mammography or dental x-rays.
The widespread use of CT and other procedures that use ionizing radiation to create images of the body has raised concerns that even small increases in cancer risk could lead to large numbers of future cancers (7, 8).
Are imaging examinations safe? Exposure to medical imaging that uses X-rays or gamma rays (radiographs, fluoroscopes, CT scans, and nuclear medicine) potentially may increase the risk of a cancer occurring later in life. Because the doses of radiation given in medical imaging are low, it is not possible to provide an accurate estimate of risk.
CT scans usually require more exposure to radiation than common x-rays because they use a series of x-ray images. Increased exposure means a slightly higher risk of possible short-term and long-term health effects.
The main risks associated with CT scans are incidental results, leading to unneeded, possibly invasive, follow-up tests that may present additional risks and the increased possibility of cancer...
