Friday, 26 September 2014
Are you afraid of X-rays?
Do you know how an x-ray works?
A special tube inside the x-ray machine sends out a controlled beam of radiation. Tissues in the body absorb or block the radiation to varying degrees. Dense tissues such as bones block most radiation, but soft tissues, such as fat or muscle, block less. After passing through the body, the beam falls on a piece of film,. Tissues that block high amounts of radiation, such as bone, show up as white areas. Soft tissues block less radiation and show up in shades of gray, and organs that are mostly air (such as the lungs) normally look black. Tumors are usually denser than the tissue around them, so they often show up as lighter shades of gray.
Are you afraid that you are receiving too much radiation from X-rays?
For comparison, all of us receive about 300 meme (3 mSv) of radiation exposure to natural background radiation every year. A chest x-ray can expose us to 6 meme (0.06 mSv)
So don't be afraid if you are required to take series of x-rays because of your sickness.
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