Sign-in to Ask A Doctor - 24x7
OR
Sign in with Google
I Had A Ct Scan Of About 8 MSv, I
Posted on
Mon, 2 Sep 2019
Medically reviewed by
Ask A Doctor - 24x7 Medical Review Team
Mon, 2 Sep 2019
Answered on
Last reviewed on
Question : I had a ct scan of about 8 mSv, I am horrified i have an increased cancer risk. Am i safe from an increased cancer risk at 8mSv?
Brief Answer:
8 msv of radiation doesn't increase cancer risk.
Detailed Answer:
Hello dear, welcome to Ask a doctor service.
I read your query and here is my advice.
Having a CT scan done doesn't increase cancer risk. Being exposed to 8 msv of radiation is less than having a CT scan done and we often recommend patients to do a scan a year to follow up certain conditions.
So as a conclusion being exposed to 8 msv of radiation or having a CT scan done doesn't increase cancer risk.
Hope I have answered the question.
Let me know if I can assist you further.
8 msv of radiation doesn't increase cancer risk.
Detailed Answer:
Hello dear, welcome to Ask a doctor service.
I read your query and here is my advice.
Having a CT scan done doesn't increase cancer risk. Being exposed to 8 msv of radiation is less than having a CT scan done and we often recommend patients to do a scan a year to follow up certain conditions.
So as a conclusion being exposed to 8 msv of radiation or having a CT scan done doesn't increase cancer risk.
Hope I have answered the question.
Let me know if I can assist you further.
Above answer was peer-reviewed by :
Dr. Raju A.T
The LNT (linear no threshold model) suggests a .05 percent chance of cancer from 10 mSv? is this accurate or hypothetical ?
Please answer
Are you there?
Brief Answer:
See detailed answers below.
Detailed Answer:
Hello dear Hello dear and thank you for asking again .
It is true what you are taking but it also gives this explanation (Because the LNT model assumes there is no threshold dose for radiation-induced cancer, even a dose of as low as 0.1 mSv is associated with a nonzero excess risk (i.e., one hundredth the risk from 10 mSv).)
Also it states (Thus, if each person in a population of one million received an effective dose of 10 mSv (1 rem), the expected number of fatal excess-cancer cases in this population over their remaining lifespan would be 500 (1 × 106 persons multiplied by 10 mSv multiplied by 5 × 10−5 person/mSv). This compares to a spontaneous, or background, lifetime incidence of about 300,000 (30%) otherwise occurring in such a population and an increase in overall incidence of only 0.17% [(500/300,000) × 100%].)
So the cancer risk is very insignificant.
See detailed answers below.
Detailed Answer:
Hello dear Hello dear and thank you for asking again .
It is true what you are taking but it also gives this explanation (Because the LNT model assumes there is no threshold dose for radiation-induced cancer, even a dose of as low as 0.1 mSv is associated with a nonzero excess risk (i.e., one hundredth the risk from 10 mSv).)
Also it states (Thus, if each person in a population of one million received an effective dose of 10 mSv (1 rem), the expected number of fatal excess-cancer cases in this population over their remaining lifespan would be 500 (1 × 106 persons multiplied by 10 mSv multiplied by 5 × 10−5 person/mSv). This compares to a spontaneous, or background, lifetime incidence of about 300,000 (30%) otherwise occurring in such a population and an increase in overall incidence of only 0.17% [(500/300,000) × 100%].)
So the cancer risk is very insignificant.
Above answer was peer-reviewed by :
Dr. Prasad
Does 10 msv increase cancer risk ?
Is the LNT model proven or is it just an assumption
Brief Answer:
Lnt model is an assumption.
Detailed Answer:
Hello dear and thank you for asking again.
Sorry for the delayed answer because of an WiFi issue.
As a conclusion 10 msv doesn't increase cancer risk.
LNT model is not proven but it is an approach. The real risk varies from person to person and can't be calculated exactly.
Let me know if I can assist you further.
Best regards.
Lnt model is an assumption.
Detailed Answer:
Hello dear and thank you for asking again.
Sorry for the delayed answer because of an WiFi issue.
As a conclusion 10 msv doesn't increase cancer risk.
LNT model is not proven but it is an approach. The real risk varies from person to person and can't be calculated exactly.
Let me know if I can assist you further.
Best regards.
Above answer was peer-reviewed by :
Dr. Yogesh D
Answered by
Get personalised answers from verified doctor in minutes across 80+ specialties
