5 Questions
What is the average annual dose of natural background radiation exposure?
2.4 mSv
What is a source of terrestrial external radiation exposure?
Cosmic rays from outer space
Which of the following is an example of internal exposure to radionuclides?
Inhalation of radon gas
What principle guides the doses from Oral-maxillofacial imaging?
Optimized for diagnostically acceptable image
What is the greatest contributor to human-made radiation exposure?
Medical radiation
Study Notes
Radiation Exposure
- The average annual dose of natural background radiation exposure is approximately 2.4 mSv ( millisievert).
Terrestrial External Radiation Exposure
- One source of terrestrial external radiation exposure is radon in the soil.
Internal Exposure to Radionuclides
- An example of internal exposure to radionuclides is the consumption of food and water contaminated with radioactive substances.
Principle Guiding Doses from Oral-maxillofacial Imaging
- The ALARA principle (As Low As Reasonably Achievable) guides the doses from Oral-maxillofacial imaging.
Human-made Radiation Exposure
- The greatest contributor to human-made radiation exposure is medical imaging, particularly CT scans.
Test your knowledge of radiation exposure sources with this quiz. Learn about natural sources of radiation such as terrestrial and cosmic radiation, as well as internal exposure from radionuclides.
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