• Computed tomography or CT scan is the best way to determine if a stroke was caused by a ruptured artery. A CT scan also can show the location and size of a damaged area. Magnetic resonance imaging (MRI) is similar to a CT scan, but instead of using X-rays, it uses a magnetic field to create a signal that a computer can translate into a message. MRIs can diagnose strokes caused by blockages or ruptures.
• Carotid ultrasound uses sound waves to find the location and extent of blockages in the carotid arteries in your neck. These arteries supply blood to your brain, so a clot in one of them can cause a stroke.
• Cerebral angiography. If an ultrasound finds a blocked carotid artery, cerebral angiography is used to get more information. This procedure produces an image of the arteries in your brain and your neck so your doctor knows the location and extent of blockages in these areas. Doctors can also diagnose blood vessel abnormalities.
• Carotid endarterectomy. Removes plaque from the artery.

Read about stroke services at UT Medical Center.