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7 Ιουλ 2023 · Today, the most common artificial sources of human exposure to radiation are X-ray machines and radiopharmaceuticals used for diagnostic or radiotherapy and other medical devices. Exposure to radiation can result from natural sources (e.g. radon in homes), planned (medical, occupational) or accidental situations.
- Ionizing Radiation, Health Effects and Protective Measures
People are exposed to natural sources of ionizing radiation,...
- Ionizing Radiation, Health Effects and Protective Measures
The four major types of radiation include alpha particles, beta particles, neutrons, and electromagnetic radiation. We are exposed to different levels of radiation in our everyday lives, including from healthcare (X-rays, CT scans, mammograms), air travel, building materials, cigarette smoking, cell phones, wearable technology, and more.
By far the largest source of natural radiation exposure comes from varying amounts of uranium and thorium in the soil around the world. The radiation exposure due to cosmic rays is very dependent on altitude, and slightly on latitude: people who travel by air, thereby, increase their exposure to radiation.
Additionally, some human-made radiation sources include consumer products, nuclear and coal-burning power plants, and medical uses such as nuclear medicine and computed tomography (CT). Annually, a US citizen is exposed to an average radiation dose of 6.2 millisieverts (mSv)
27 Ιουλ 2023 · People are exposed to natural sources of ionizing radiation, such as in soil, water, and vegetation, as well as in human-made sources, such as x-rays in medical devices. Ionizing radiation has many beneficial applications, including uses in medicine, industry, agriculture and research.
20 Οκτ 2022 · The seven low-dose exposure sources described in this chapter involve different types of ionizing radiation (e.g., alpha, beta, and gamma radiation), routes of exposure (internal and external), and durations of exposure (acute or protracted), as summarized in Table 2.1.
We can classify radiation according to the effects it produces on matter, into ionizing and non-ionizing radiation. Ionizing radiation includes cosmic rays, X rays and the radiation from radioactive materials. Non-ionizing radiation includes ultraviolet light, radiant heat, radio waves and microwaves.
