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Doctor insights on: Ct Scan Dangers

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I'm 24 and had 4 CT scans in the last 5 years. Are these dangerous at my age if i get another CT scan and end up needing one every few years?

I'm 24 and had 4 CT scans in the last 5 years. Are these dangerous at my age if i get another CT scan and end up needing one every few years?

Too much radiation: Ct scans use radiation. Many are done with high intensity with multiple cuts and lots of radiation exposure. Newer ones are limited with less radiation. Young brains are very vulnerable to toxic effects from radiation - especially children. Try to limit the exposure. ...Read more

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Dr. Heidi Fowler
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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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I'm fasting for Ramadan and I need to have a CT scan with IV contrast. Is it dangerous for me to have the CT scan during the fast?

I'm fasting for Ramadan and I need to have a CT scan with IV contrast. Is it dangerous for me to have the CT scan during the fast?

Hydration: No problem as long as well hydrated. IV contrast is excreted through kidneys and can cause renal dysfunction if dehydrated. Usually requested to be NPO few hours before testing. ...Read more

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I'm a 30 year old male. I had one CT scan done without contrast and now have to do one with contrast, is this a dangerous amount of radiation?

I'm a 30 year old male. I had one CT scan done without contrast and now have to do one with contrast, is this a dangerous amount of radiation?

Benefit ;: Risk depend on indication for studies. We tend to select who to do both. Many scans are now low dose. It's best to have a family doctor that knows you and decides when to do ct's rather than er which does more. The risk is population based, trivial increase for individual (1 in 10 thousand to 2/10k). ...Read more

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How dangerous is head CT scan?

How dangerous is head CT scan?

Go to: Acr accredited scanner to be safest. Only small risk. See radiologyinfo.Org. ...Read more

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Is it dangerous to open eyes while doing a CT scan? I accidentally opened my eyes.

Is it dangerous to open eyes while doing a CT scan? I accidentally opened my eyes.

No effect: While there is a total body radiation dose associated with a CT scan, there is no effect on this from opening and closing the eyelids. It is certainly not dangerous to you nor to the quality of the scan. ...Read more

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My CT scan showed sub lenticular cyst of 9mm. Is this dangerous size? Why my MRI did not show it? Was it supposed to?

Not likely dangerous: It is not clear why the CT scan showed the cyst and the MRI did not. I would recommend that you make sure the studies were compared. Cysts in the brain are usually benign. Without seeing the study, it is hard for me to make a comment about your scans. ...Read more

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How dangerous is CT scan of brain in a young adult? Wil it cause any problems in the future ? Is it a risk factor for any disease?

CT scan: Ct scans are safe for most people, and the doctors weigh the need for this information vs the exposure to radiation, etc. If the scan includes contrast ("dye") there may be reactions to this -- but most people are not allergic. Your doctors should be checking your history and be ready for any possibility. Please discuss your concerns with the doctors who already know you. ...Read more

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How dangerous is a head CT scan for 2 months old baby?

How dangerous is a head CT scan for 2 months old baby?

Not dangerous: Much less dangerous than any of the reasons that the ct is being ordered for in the first place. ...Read more

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Can you tell me how dangerous is head CT scan for 2 months old baby?

Can you tell me how dangerous is head CT scan for 2 months old baby?

Risk vs. Benefit: It all comes down to risk versus benefit. Speak to your doctor. Radiation for infants and children are to be kept "alarp" (as low as reasonably possible). Make sure the study is done at a center or hospital where pediatric radiology is normally performed. You can also speak to the pediatric radiologist at that center to feel more comfortable with the exam for your child. ...Read more

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Myoview stress test uses radioactive injections, is this dangerous? Some say it's an absurd amount of radiation. My need to change to a CT scan ?

It is not: an absurd amount of radiation. The average effective radiation is slightly more than a standard chest CT. A coronary artery CT angiogram, on the other hand, is nearly twice as much radiation as a myoview stress test, and doesn't provide the same information. The radionuclide used in the stress test, technetium 99m, has been safely used in medicine for more than 50 years. ...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