Conceptual Diagram of the Circle of Willis The cerebral circulation has a unique system that allows for compensatory flow when any one of the 4 vessels is narrowed or occluded. This cerebral circulation is centered on the circle of Willis which has two basic systems that feed it; the carotid system (in this case salmon pink) and the vertebro-basilar system (brighter pink). They both feed into the circle of Willis (bright red) via communicating branches. The middle cerebral artery is the vessel that feeds into the COW by providing the anterior communicating artery. The posterior cerebral artery connects via the posterior communicating artery. Conceptually as depicted in this diagram the circle of Willis is the centre of the cerebral circulation and from it, blood flows into the anterior (bright green), middle (darker green) and posterior cerebral (maroon) regions. Ashley Davidoff MD Copyright 2018 97194b16bgvert02.8s
Moon River ..and the Cerebral Arteries Image derived from an MRI – MRA of the carotid arteries Ashley Davidoff MD Copyright 2018 127551.5k.as00.8
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Moon River ..and the Cerebral Arteries Image derived from an MRI – MRA of the carotid arteries Ashley Davidoff MD Copyright 2018 127551.5k.as01.8kb05.8
Moon River ..and the Cerebral Arteries in the Fall Image derived from an MRI – MRA of the carotid arteries Ashley Davidoff MD Copyright 2018 127551.5k.as01.8kb05.81
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Carotid Tree The artistic rendition of the MRI MRA of the extracerebral and intracerebral circulation Ashley Davidoff MD Copyright 2018 46352b02
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The Carotid Tree in Gold The artistic rendition of a “brain flower” from an MRI MRA of the intracerebral circulation Ashley Davidoff MD Copyright 2018 46352b06.800
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The Carotid Tree in Gold The artistic rendition of a “brain flower” from an MRI/ MRA of the intracerebral circulation Ashley Davidoff MD Copyright 2018 46352b07.800
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The Carotid Tree in Blue The artistic rendition of a “brain flower” from an MRI/ MRA of the intracerebral circulation Ashley Davidoff MD Copyright 2018 46352b07.800
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The Carotid Tree in Orange The artistic rendition of a “brain flower” from an MRI/ MRA of the intracerebral circulation Ashley Davidoff MD Copyright 2018 46352b07.800
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Addition in the Brain The artistic rendition of a music and dance in the brain is created by adding images of the brain from an MRI/MRA Ashley Davidoff MD Copyright 2018 46353c06s.1k
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Brain in Blue Yellow and Black The artistic rendition of a collage of “brain flower” from an MRI/ MRA of the intracerebral circulation Ashley Davidoff MD Copyright 2018