what is an abnormality in the circle of willis?
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Answers:
The circle of Willis (also called the cerebral arterial circle, arterial circle of Willis, or circulus arteriosus cerebri) is a circle of arteries that supply the brain. It is named after Thomas Willis (1621-1673), an English physician.[1]
The arrangement of the brain's arteries into the Circle of Willis creates redundancies in the cerebral circulation. If any one of the arteries in the circle become blocked or narrowed (stenosed) or one of the arteries supplying the circle is blocked or narrowed, blood flow from the other blood vessels can usually maintain cerebral perfusion.
Other Answers:
The circle of Willis is an anatomical feature in the brain that helps ensure a flow of blood to the brain even if one carotid artery is damaged. An abmormality in that structure is potentially very serious. I am not a neurologist and cannot explain why it would cause head pain. You need to talk to neurologists and neuropathologists. I wish you and your husband the best.
the circle of willis protects the white matter of the brain. Sometimes it does not completely develop in a fetus, or it develops with an abnormality (other than how it should, covering the entire are its meant to protect) This is a cause of migrains in people later in life as well as mood changes mostly due to the headaches.
Hope i've helped some.
From a physician: The circle of Willis is a set of arteries in the interior of the brain, connected in such a way as to form a roughly circular pattern. The arteries are responsible for carrying blood from the neck to various points in the brain tissue.
One of the more common abnormalities in this set of arteries is an aneurysm. An aneurysm is like a pushed-out bubble formed by a blood vessel's wall. There is a risk that such an aneurysm may rupture (break), because it weakens the blood vessel wall.
An MRI (magnetic resonance imaging) is like an x-ray that uses magnetic waves instead of x-rays to take pictures of the body. (That's why they ask you about any metal in your body from surgeries, gunshot wounds, etc., before the test.)
An MRA (magnetic resonance angiogram) is a test in which magnetic waves are used to take pictures of blood vessels - such as the arteries in the circle of Willis. A dye is injected into the bloodstream and picked up by the magnetic waves, giving detailed pictures of the blood vessels. It is a good test for abnormalities such as aneurysms.
"Vascular" refers to anything to do with blood vessels.
Hope this helps. Take heart. Ask questions of the physicians taking care of your husband - that's what they're there for.
The circle of willis is a portion of the arteries found within the brain (it forms a circle hence the name, willis is a famous physician from days of old), it is important as it supplies blood to the brain.
MRA or magnetic resonance - angiography is a technique used by the medics to try and visualize soft tissues (they can't use X-ray here since the brain is majorly soft tissues) - it is still using MRI, just that this method focuses on making the blood vessels more visible - the docs just want to see and determine if that peanut size thing is connected or part of the blood vessels there (that's why they used the term vascular - pertaining to blood vessels).
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