Q. What is the safety limit for CT scans?

Answered by
Dr. Vivek Chail
and medically reviewed by iCliniq medical review team.
This is a premium question & answer published on Jul 25, 2015 and last reviewed on: Oct 09, 2018


I am a 31 year old male. I would like to know how many CTscans - abdomen and pelvis are safe in a 2 months time. I have had CT scan abdomen and pelvis 2 months back in another city, but now a doctor here wants it done again as I do not have the reports.

Is it safe? What is the safety limit for CT scans?

I am worried about the radiations. Could you advice if I can go ahead?



Welcome to

  • Every CT scan abdomen and pelvis will give you a radiation exposure of approximately 14 mSv which means it gives a risk of 0.16 percent to develop cancer. This means 99.86 percent chance that it will not cause cancer.
  • If you get another CT scan abdomen and pelvis done now, then the total radiation you will be exposed to would be 28 mSv and the risk for cancer will increase to 0.31 percent which means 99.69 percent you will be safe.
  • We do not have any safe number of radiations over a period of time but two CT scans should be done only if required and considering it will be useful in making a diagnosis.
  • A radiation risk of 0.31 percent after two CT scan abdomen and pelvis examinations is very small.
  • However, I suggest you that please go to the place where you got the CT scan done and request for a duplicate report. I hope the doctors in the scan center would give you a duplicate report on request. 
  • Doing a CT scan abdomen pelvis again just because you do not have the reports is not advisable.

For further queries, consult a radiologist online -->

Was this answer helpful?


Same symptoms doesn’t mean you have the same problem. Consult a doctor now!

Related Questions:
CT scan shows non-growing lung nodules with scars. What does it suggest?

.. found six years back would have manifested into multiple lesions by now if there were cancer and you are right in your thoughts. Usually, cancer nodules double in 30 to 180 days time and if the nodules did not change in six months then cancer is n...   Read full

Have I developed laxative dependency?

.. looks unlikely. Magnesium, being a laxative, helped your pre-existing condition. The symptoms you have mentioned point towards IBS (irritable bowel syndrome). This is constipation-predominant IBS. In constipation-predominant IBS, you may develop S...   Read full

My CT abdomen shows TB and few cortical cyst in kidneys. What is the treatment?

Thank you doctor, I do suffer from gurgling in my throat when I swallow saliva, which could be reflux. It seems to ease off when I relax. What could it be?   Read full

Also Read Answers From:

ideaComprehensive Medical Second Opinion.Submit your Case

Also Read

Tomato Fever - Causes, Symptoms, Diagnosis, Treatment, and Prevention
Tomato fever is an unidentified and fast-spreading type of viral infection seen in young children. Scroll down to know m...  Read more»
Histrionic Personality Disorder - Causes, Signs, Symptoms, Diagnosis and Treatment
Histrionic personality disorder causes variations in the thinking ability of a person. Read this article to know more.  Read more»
Nighttime Skin Routine for Clear Skin
A skin that gets all the attention during the day requires a chance to repair, rejuvenate and replenish from day damage ...  Read more»

Ask your health query to a doctor online?

Ask a Radiologist Now

* guaranteed answer within 4 hours.

Disclaimer: No content published on this website is intended to be a substitute for professional medical diagnosis, advice or treatment by a trained physician. Seek advice from your physician or other qualified healthcare providers with questions you may have regarding your symptoms and medical condition for a complete medical diagnosis. Do not delay or disregard seeking professional medical advice because of something you have read on this website. Read our Editorial Process to know how we create content for health articles and queries.