Can a CT scan miss an aneurysm?

Yes. A noncontrast ct can easily "miss" small aneurysms. Although conventional angiography is still the "gold standard". Mr angiography is very good and non-invasive.
< 1 cm, yes. The size matters-- < 1 cm and ct may miss it. Ct w/ 3d reconstruction is markedly improved imaging technique, but this specific test needs to be requested before hand...

Related Questions

Hi, can iodine CT scan miss 2 CM aneurysm? I guess it can seem a weird question with a obvious no but I d like to be sure. Thanking you in advance.

Of what? In be head -unlikely in the abdomen, that is not an aneurysmal size for aorta but would be seen. Read more...
Brain Aneurysm. I assume you mean brain aneurysm, in which case the answer is no. A 2cm aneurysm is very large and will be easily detected by contrasted ( or non/contrast) ct scan. If by chance you are mistaken and mean 2millimeter, not centimeter, it is very easy for a ct to miss. Read more...