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.
Unlikely. Due to resolution of a ct scan, many small aneurysms may not be seen, and, by far, the MRI would be far better, but again, it might take gadolinium. However, the cat angio could well detect an aneurysm, and this might work as well or better than a magnetic resonance angio.

Related Questions

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

Depends . Calcification can give an idea of an intracranial aneurysm, but contrast study is essential for a complete study and the amount of contrast used in ct imaging of the brain is small. Read more...
Usually not . Unless there is calcium in the aneurysm wall which is rare in brain aneurysm or it large aneurysm then we can see them without contrast. Read more...
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...

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?

It . It is possible for a noncontrast ct to reveal an unruptured aneurysm, but generally this is a very poor test for aneurysm evaluation. A noncontrast head ct will usually only finding very large aneurysms and smaller aneurysms will almost always be overlooked. A mr angiogram may be performed to screen for aneurysm; this uses no intravenous contrast and is performed in a standard MRI machine. A ct angiogram can also screen for aneurysm; this uses intravenous iodinated contrast scan and is performed in a multidetector ct scanner. A conventional angiogram is the gold standard in evaluation for aneurysm; this is performed by placing a needle and catheter into an artery in the groin and then injecting iodinated contrast into the arteries of the neck while taking x-ray images of the head. Read more...
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...
Unlikely. A ct scan of the head without contrast is meant to look for bleeding, not aneurysms. Unless and aneurysm is quite large and/or has a thrombus in it, it is unlikely to be seen on a non contrast ct scan. A cta or mra are good diagnostic tests for detecting brain aneurysms. Read more...

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...

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...

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

Not necessarily. Unless it is very large, it may not show up on a plain ct. A ct angiogram is more sensitive. Read more...
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...
Sometimes. Particularly if large or at tips of the internal carotid arteries or basilar artery. Read more...

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...

Will a head cat scan show a brain aneurysm?

Specialized CTA may. A ct angiogram will more likely be a good screening test. The gold standard is a 4 vessel cerebral angiogram. Read more...
Thanks for asking! It has to be very big and partially calcified... Mri and mra are more sensitive for this purposes... Read more...
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...

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...