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Questions and Answers
What is the source of natural background radiation?
What is the source of natural background radiation?
- Water bodies and oceans
- Extraterrestrial sources like distant suns and stars
- Medical x-ray machines
- Ground and soil (correct)
What determines the amount of exposure a person receives from natural background radiation sources?
What determines the amount of exposure a person receives from natural background radiation sources?
- Distance from the equator
- Proximity to medical facilities
- Dietary habits
- Location of residence (correct)
What is the function of a medical x-ray machine?
What is the function of a medical x-ray machine?
- To produce magnetic resonance images
- To provide a sufficient intensity of electron flow to produce an x-ray beam (correct)
- To generate ultrasonic waves for imaging
- To emit visible light for imaging
What type of images does conventional x-ray radiography produce?
What type of images does conventional x-ray radiography produce?
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Where are the x-rays produced in conventional x-ray radiography directed?
Where are the x-rays produced in conventional x-ray radiography directed?
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Study Notes
Natural Background Radiation
- The source of natural background radiation is the environment, including cosmic rays, rocks, soil, and radon in the air.
Exposure to Natural Background Radiation
- The amount of exposure a person receives from natural background radiation sources is determined by factors such as geographic location, altitude, and the type of building materials used in their home.
Medical X-ray Machines
- The function of a medical x-ray machine is to produce x-rays that pass through the body, creating images of internal structures.
Conventional X-ray Radiography
- Conventional x-ray radiography produces 2D images of internal structures in shades of gray.
- In conventional x-ray radiography, x-rays are directed through the body, and the resulting shadows are captured on film or a digital detector.
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