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Doctor insights on: Ct Scan Radiation Dose

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Does the CT scan shows the radiation dose used in the scan in mSv?

Does the CT scan shows the radiation dose used in the scan in mSv?

10 mSv: A CT scan of the abdomen (belly) and pelvis exposes a person to about 10 mSv; this goes up to 20 mSv if the test is done twice (once with and once without contrast). ...Read more

Dr. James Krick
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Computed Tomography (Definition)

Ct uses xrays taken an 360 degrees combined with a computer to see"inside" the body. The table moves as the xray tube and detectors spin around the patient 10 times a second or more! the image shows excellent soft tissue detail, enhanced with injection of intravenous contrast or oral contrast. This way the body is shown in slices, in any plane, usually axially, but ...Read more


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How much radiation dose am i risking with a bilateral hip and pelvic CT scan? Should mention do not know if prob is coming from hip for sure

Low risk: Risk from one ct is low. You likely receive an equivalent radiation dose from the environment in a year. If it is not certainly a bone lesion, and may be related to the cartilage, a tendon, or a muscle, MRI may provide more information than a ct. If you haven't already seen a specialist (sports med md, ortho), that may be a better option to make sure you're getting the appropriate tests. ...Read more

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I had about 5 to 6 CT scan between nov and dec could I have cancer in my lungs by now or dose it takes more then 6 scans of radiation to develop canc?

Perhaps the chance : Of getting cancer from a ct scan is in the range of 1/ 10-100, 00. So your risk would be 6/10, -100, 000. If you did not hae the ct's, your team would not know how to treat your pulmonary problem. Forget the cancer risk and get well. ...Read more

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How long does it takes to get radiation induced cancer? Should i worry after 5 to 10 years as i had on chest CT scan month ago with 4.8msv dose?

May not even happen: The average ct scan in the us exposes us anywhere between 3 and 10 msv. A dose of 10 msv increases the risk of getting any cancer by 0.1% and the risk of fatal cancer by 0.05%. According to the national research council and the U.S. Fda, any person has a 20% risk of dying from cancer in their lifetime. One ct scan of 10msv would increase the chance to 20.05%. Not a big risk. Don't worry too much. ...Read more

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Should i risk the radiation dose of a hip CT scan due to left hip dysplasia that has not manifested as pain yet but stiffness and movement problems?

Should i risk the radiation dose of a hip CT scan due to left hip dysplasia that has not manifested as pain yet but stiffness and movement problems?

Yes: You should discuss with your physician the reasons for the ct scan and how information gained from the ct scan might alter your treatment. ...Read more

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Help please? How much radiation in a CT scan?

Help please? How much radiation in a CT scan?

Depends on what kind: The info provided on the chart if you go to the link below should be very helpful. It will show you the radiation dose for many different radiology exams. http://www.radiologyinfo.org/en/safety/?pg=sfty_xray. ...Read more

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How long do a CT scan send radiation into your body?

While: You are in the scanner and the images are being taken you are receiving a relatively small dose of radiation. Often this is less than a minute depending on what is being scanned. ...Read more

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Is getting a second CT scan within a year too much radiation?

Is getting a second CT scan within a year too much radiation?

Too much?: "too much" is a relative term. Basically no. If you have a medical condition, ie cancer that is being monitored by ct then the benefits outweigh the risks. If you are getting a ct for no reason then the risks (small but finite) outweigh the benefits. Any medical procedure is not a binary state. There is a continuum of risks and benefits. ...Read more

Dr. Michael Korona
1,789 doctors shared insights

Ct Scan (Definition)

Ct scan uses data from a beam of xrays and reconstructs a cross sectional image of your body. It is a high dose of xrays and used only when the benefits outweigh the risk. Cancer risk is 1 in 500 in children. Also using iodinated contrast might cause transient renal failure in about 5% of patients. (contrast induced nepropathy) most do not explain this to the patient as ...Read more


Gamma Rays (Definition)

This is light of extremely short wavelengths typically produced either among the stars / in cosmic rays or by radioactive element decay. Gamma rays form the background of normal radiation in which we all live; it is substantially greater than the exposure we get from imaging scans or should get from ...Read more