A brain aneurysm (also called a cerebral aneurysm or an intracranial aneurysm) is a ballooning arising from a weakened area in the wall of a blood vessel in the brain. If the brain aneurysm expands ...

What is magnetic resonance angiography? You’ve probably heard about the test called magnetic resonance imaging or MRI. In this test, radio waves, a magnetic field, and a computer create a scan of your ...