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Doctor insights on: Will A Brain Aneurysm Show Up On A Plain Ct Scan Of The Head

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Will a brain aneurysm show up on a plain CT scan of the head?

Will a brain aneurysm show up on a plain CT scan of the head?

USUALLY NOT: Since aneurysms are a 'defect' in the arterial system --they can really only be seen with a contrast ct study (angiogram) or a mra (mri-angiogram). One time i did have a patient with a leaking brain aneurysm which the effects of which were barely visible on ct but confirmed on mra--and she made it! ...Read more

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Dr. Patricia Foster
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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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Is it possible for a CT scan of the head *without* contrast to show an unruptured brain aneurysm?

Is it possible for a CT scan of the head *without* contrast to show an unruptured brain aneurysm?

It is: possible, but not probable. The aneurysm would have to be relatively large, and even then the noncontrast appearance may not be specific. ...Read more

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Will a head cat scan show a brain aneurysm?

Will a head cat scan show a brain aneurysm?

Sometimes: If an aneurysm is large, and especially if there are calcifications in the wall of the vessel, it can be seen on ct. However, angiography with a ct (dye in vessels, looking at the vessels themselves) is better test. Mrangiography is also sometimes useful, certainly better than simple ct done without contrast. ...Read more

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Can I ask my doc to change my ct scan for my head to with contrast to alleviate my severe fear of brain aneurysm?

Can I ask my doc to change my ct scan for my head to with contrast to alleviate my severe fear of brain aneurysm?

Yes: You can certainly ask about it. Rather than specifically requesting contrast though, I'd suggest asking about the potential benefits vs risk of a contrast study as opposed to the non-contrast. The appropriateness of contrast depends on the reason the study is being ordered. Contrast helps enhance detection of many findings but can obscure others. ...Read more

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Can a CT scan of the head without contrast dye detect brain aneurysms?

Can a CT scan of the head without contrast dye detect brain aneurysms?

Yes: While plain ct scan is not the best test for aneurysm, large aneurysms can potentially be spotted. Mri is a better test, especially when blood vessels are looked at as well. ...Read more

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Can CT scan without contrast show brain aneurysm?

Unlikely: Ct scan without contrast is unlikely to show an aneurysm unless it is very large and is calcified. A ct angiogram is a better study to visualize an aneurysm. ...Read more

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I did a ct scan with iodine would that show an unruptured brain aneurysm ?

I did a ct scan with iodine would that show an unruptured brain aneurysm  ?

Maybe: Depending on the size and location of the aneurysm, it can be detected with a CT scan with iodine. However, brain aneurysms are detected more frequently and with smaller sizes with CT or MR angiography techniques. ...Read more

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Will a ct scan show whether I have a brain aneurysm?

Will a ct scan show whether I have a brain aneurysm?

Yes: Has to be a CTA (CT angiogram). CT scan of the head without contrast doesn't detect aneurysms unless they are larger. CT scan of the head with contrast has a slightly better chance. CTA of the head is good for seeing aneurysms. See radiologyinfo.org and stroke association.org for more details. ...Read more

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Can i develop a brain aneurysm just 6 months after a normal CT scan?

Can i develop a brain aneurysm just 6 months after a normal CT scan?

CT didn't show it: Most likely you had your aneurysm all along - the ct scan simply did not show it. Cts do not detect brain aneurysms for the most part. Only specialized tests do (cta, mra, dsa). Discuss with your neurosurgeon. ...Read more

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Ct scan dects brain aneurysms? Is it possible for a CT scan without contrast to reveal an unruptured brain aneurysm? Is the test meant to find that sort of thing?

Ct scan dects brain aneurysms? Is it possible for a CT scan without contrast to reveal an unruptured brain aneurysm? Is the test meant to find that sort of thing?

NOT THE BEST WAY: Mri with contrast will pickup most large aneurysms over the blood vessels of the brain, and a cat angio or a magnetic resonance angio would be used to find smaller aneurysms. Standard cat not usually successful. ...Read more

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Dr. Michael Korona
1,791 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


Dr. Abhineet Chowdhary
320 doctors shared insights

Brain Aneurysm (Definition)

Brain aneurysm is a medical condition in which there is an outpouching of the wall of the blood vessel that supplies the brain. The most serious consequence of this outpouching is that the wall is weakened and can rupture, leading to massive ...Read more