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By far, the most significant source of man-made radiation exposure to the public is from medical procedures, such as diagnostic X-rays, nuclear medicine, and radiation therapy. Some of the major
In general, the following man-made sources expose the public to radiation (the significant radioactive isotopes are indicated in parentheses): Medical Sources (by far, the most significant man-made source) Diagnostic x-rays. Nuclear medicine procedures (iodine-131, cesium-137, and others) Consumer Products. Building and road construction materials.
Manufactured sources include medical uses of radiation, residues from nuclear tests, industrial uses of radiation, television, and numerous other radiation-producing devices. For example, in some kinds of smoke detectors, you can meet manufactured radionuclides such as americium-241.
All of us are exposed to radiation every day, from natural sources such as minerals in the ground, and man-made sources such as medical x-rays. According to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem) millirem) .
A chart of the public's exposure to ionizing radiation (displayed below) shows that people generally receive a total annual dose of about 620 millirem. Of this total, natural sources of radiation account for about 50 percent, while man-made sources account for the remaining 50 percent.
Radiation used in medicine is the largest source of man-made radiation to which people in the United States are exposed. Most of our exposure is from diagnostic X-rays.
Man-made sources of radiation exposure include some electronic equipment (such as older television sets), medical sources (such as X-rays, certain diagnostic tests, and treatments), and nuclear weapons testing that took place in the 1950s and 1960s. More about medical radiation.
All of us are exposed to radiation every day, from natural sources such as minerals in the ground, and man-made sources such as medical x-rays. According to the National Council on Radiation Protection and Measurements (NCRP), the average annual radiation dose per person in the U.S. is 6.2 millisieverts (620 millirem) .
Man-made Sources of Radiation. Since ionizing radiation has many industrial and medical uses, people can also be exposed to artificial sources of radiation. Artificial sources include medical uses of radiation, residues from nuclear tests, industrial uses of radiation, television, and numerous other radiation-producing devices.
Medical x-rays are the single largest source of man-made radiation exposure. Learn more about radiation sources and doses. X-rays are also used in industry for inspections and process controls.