Will an MRI show an aneurysm in the brain?

Does it require dye to detect it, or a regular MRI without contrast is sufficient?

The person asking wants to request an MRI instead of a CT if a CT is suggested, but obviously only if an MRI is actually a good diagnostic tool for it.

Obviously, they will be talking to their doctor. They did google to read up on it (so did I) and we can’t find a clear answer if both diagnostic tools are as good as the other. The reason they want to know is they don’t want the radiation of the CT and we all know insurance prefers CT’s.

Please no lectures about how little radiation in a CT, I also tend to want to avoid x-rays.