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Brain Aneurysm

Screening and Tests for Brain Aneurysm

In most cases, screening for a brain aneurysm occurs only after it ruptures or produces other symptoms. Otherwise, it may only be discovered during scans of the brain prescribed for other purposes. Following a subarachnoid hemorrhage, doctors may choose from several tests to confirm the presence of the aneurysm and to gain information about its nature and the best treatment option.
Tests for a brain aneurysm employed at the Florida Hospital Neuroscience Institute include:
  • Computed tomography (CT) scan – usually the first test used diagnosing a cerebral aneurysm after a rupture, creates images of cross sections of the brain
  • Computed tomography angiogram (CTA) allows seeing the blood vessel around the brain and most aneurysms. 
  • Cerebrospinal fluid test – an analysis of fluid that protects the brain and spinal cord
  • MRI (magnetic resonance imaging) – uses magnetic fields to locate and diagnose a brain aneurysm
  • Cerebral angiogram – a catheter inserted into blood vessels in the brain injects a special dye that shows blood flow through the vessels in an x-ray
  • MRA (magnetic resonance angiography) – a contrast dye administered intravenously helps create images of blood vessels on an MRI

Locations for Brain Aneurysm