Abstract
Obstruction to blood flow through the internal carotid artery invokes collateral blood supply from the Circle of Willis and from reversal of flow in the ophthalmic artery. These collateral pathways serve to ameliorate the effects of the restricted carotid blood flow. In addition they provide a simple means by which the diagnosis of carotid obstruction may be suspected. Using a Doppler ultrasonic velocity detector, flow in these vessels may be examined and the presence or absence of functioning collateral pathways may be determined. The technique for this examination has been developed over a period of years and has proved to be a reliable method of screening for significant carotid obstruction.
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© 1981 Martinus Nijhoff Publishers by The Hague
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Brockenbrough, E.C. (1981). The Periorbital Collateral Arteries. In: Cerebrovascular Evaluation with Doppler Ultrasound. Developments In Cardiovascular Medicine, vol 6. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-8204-8_11
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DOI: https://doi.org/10.1007/978-94-009-8204-8_11
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-009-8206-2
Online ISBN: 978-94-009-8204-8
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