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CT scan and cancer risks
My ENT ordered a CT scan for my ear problems. It was done. Did they scan the whole head with the same radiation consecration? I had no dye or contrast. howmany msv's would I have been received. And is my cancer risk increased as I am a male of 37 and have had this year a CBCT , chest x ray and dental xray as well.
How can I know how many msv did my body receive?
How can I know how many msv did my body receive?
Yes, it increases your risk, but not by much.
Rough estimates for dose are:
A chest X-ray is 0.02 mSv, dental X-ray is 0.001mSv.
CBCT of what area? For dental purposes it normally ranges from 0.4 to 1mSv.
A CT of the head is 2mSv.
Your total is below 3mSv.
Even without having an X-ray taken, your body gets bombarded with X-rays. The average effective dose from background radiation is about 3 mSv per year.
So, last year your received about a double dose (~6mSv instead of 3mSv).
An additional dose of 3 mSv may be associated with an increase in the possibility of fatal cancer of approximately 1 chance in 5000. This increase in the possibility of a fatal cancer from radiation can be compared to the natural incidence of fatal cancer in the U.S. population, about 1 chance in 5 (equal to 1000 chances in 5000). In other words, for any one person the risk of radiation-induced cancer is much smaller than the natural risk of cancer. If you combine the natural risk of a fatal cancer and the estimated risk from the 3mSv, the total risk may increase from 1000 chances in 5000 to 1001 chances in 5000.
So, yes there is an increase risk, but the increase is very small.
Hope this answer clears things up for you.
Rough estimates for dose are:
A chest X-ray is 0.02 mSv, dental X-ray is 0.001mSv.
CBCT of what area? For dental purposes it normally ranges from 0.4 to 1mSv.
A CT of the head is 2mSv.
Your total is below 3mSv.
Even without having an X-ray taken, your body gets bombarded with X-rays. The average effective dose from background radiation is about 3 mSv per year.
So, last year your received about a double dose (~6mSv instead of 3mSv).
An additional dose of 3 mSv may be associated with an increase in the possibility of fatal cancer of approximately 1 chance in 5000. This increase in the possibility of a fatal cancer from radiation can be compared to the natural incidence of fatal cancer in the U.S. population, about 1 chance in 5 (equal to 1000 chances in 5000). In other words, for any one person the risk of radiation-induced cancer is much smaller than the natural risk of cancer. If you combine the natural risk of a fatal cancer and the estimated risk from the 3mSv, the total risk may increase from 1000 chances in 5000 to 1001 chances in 5000.
So, yes there is an increase risk, but the increase is very small.
Hope this answer clears things up for you.
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