Diagnosis of Aneurysm
Several types of scans and tests can be used to figure out whether you have a brain aneurysm. They include:
CT scan: This exam creates images of your brain. You will lie on a table that slides into a CT scanner. A technician will inject contrast dye into one of your veins to make it easier to see the blood flow and spot aneurysms in your brain.
MRI: This exam is similar in that you lie on a table that slides into a scanner. The MRI uses magnetic field and radio waves to create detailed images of your brain and blood vessels. MRIs and CT scans can detect aneurysms larger than 3 to 5 millimeters.