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Doctor insights on: Ct Scan Radiation Cancer Risk

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Hi! I have a ct scan tomorrow because of my severe headche and some pain. I want to cancel my ct scanbecause of the radiation that cancause cancer.

Hi! I have a ct scan tomorrow because of my severe headche and some pain. I want to cancel my ct scanbecause of the radiation that cancause cancer.

Terrible idea: Listen, Rica. Stop reading doctor-bashing websites written by crooks. If you have a leaking berry aneurysm, you'll either be dead or stroked-out soon without a diagnosis. The radiation from a scan is ~3 mSV, same as an airline pilot gets in a year, and nobody's shown an increased cancer rate in pilots; radiation safety allows 20 mSV/year and there's no increase in cancer either. Do what you must. ...Read more

Dr. Barry Rosen
4,214 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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When would CT scan cancer effects show up? If i received too much radiation as a result of CT scans, when would the cancer potentially show up? Could i get canncer in 10-20 years because of CT scan radiation?

When would CT scan cancer effects show up? If i received too much radiation as a result of CT scans, when would the cancer potentially show up? Could i get canncer in 10-20 years because of CT scan radiation?

Delayed, high dose: In general, ct scans do not by themselves cause cancer. You would have to have had dozens upon dozens to risk the development of cancer. Having said that, when radiation induced cancers development, they are usually in the field of radiation, and usually are sarcomas (soft tissue malignancies). Based on your age, you would have to have had hundreds of cts in a short time 15-20 years ago. ...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?

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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Can a CT scan radiation cause cancer in future? Done ct scan due to kidney stones. I am 52 male. Please reply.

Can a CT scan radiation cause cancer in future? Done ct scan due to kidney stones. I am 52 male. Please reply.

Don't worry!: The risk of getting cancer from radiation exposure to one CT scan is infinitesimally small. You get exposed to more radiation by living your routine life every day. But it's good to remember that radiation dose accumulates, so the more CT scans you have over your life, the higher the risk. It's always a good idea to keep track of how many tests you are having, and to remind your doctor! ...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?

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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What would be in a CT scan report 2 cnfirm dat cervix cancer has reached advancd stage wher radiation&chemo has 2 b given please help 4 my mom?

What would be in a CT scan report 2 cnfirm dat cervix cancer has reached advancd stage wher radiation&chemo has 2 b given please help 4 my mom?

Cervical cancer: Usually if radiation or chemotherapy is been given, the cancer might be advanced already. Ct scan can show cancer beyond the cervix, affecting the uterine tissue and pelvic sidewall. It can say many things that would point that the cancer has spread. Look for cervical cancer staging in a search engine. ...Read more

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Had a sinus CT scan for a deviated septum/chronic sinusitis. Now i'm worried about cancer from the radiation. Is it unlikely?

Had a sinus CT scan for a deviated septum/chronic sinusitis. Now i'm worried about cancer from the radiation. Is it unlikely?

Very unlikely: While many studies have recently been published about radiation exposure & risk for cancer, the main concern is from repeated x-rays, not the occasional one. The media has also pointed out that it's important to go to reputable facilities that check their equipment regularly to insure appropriate dose is used. But in general, your risk for cancer from sinus ct scan is very unlikely. ...Read more

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If my head CT scan radiation gonna cause a brain cancer to me i need to start worry about it after 5 years or 20 years and more after the scan?Scared

If my head CT scan radiation gonna cause a brain cancer to me i  need to start worry about it after 5 years or 20 years and more after the scan?Scared

Very unlikely: If you are asking about the risk after a single head ct scan it is not measureable and is not considered a risk for developing a brain tumor. If for some reason you have many routine head ct scans especially if done throughout childhood there is a very small slight increase risk of developing a tumor but far less than .5%. The low dose of radiation from modern ct scans is negligible if used safe. ...Read more

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Dr. Dariush Saghafi
1 doctor shared a insight

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


Dr. Michael Korona
1,787 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