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American Journal of Oral Medicine and Radiology

Volume 5, Issue 2, 2018
Mcmed International
American Journal of Oral Medicine and Radiology
Issn
XXX-XXXX (Print), 2394 - 7721 (Online)
Frequency
bi-annual
Email
editorajomr@mcmed.us
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Abstract
Title
MAGNETIC RESONANCE ANGIOGRAPHIC EVALUATION OF CIRCLE OF WILLIS: A MORPHOLOGIC STUDY
Author
Arjun Bahaddur* and Santosh S Reddy Patil
Email
arjunchin45@gmail.com
keyword
Circle of Willis, MRI, CoW
Abstract
The circle of Willis (CoW) is considered as an important potential collateral pathway in maintaining adequate cerebral blood flow in patients with internal carotid artery (ICA) obstruction. A total of 300 healthy participants (198 men, 102 women; mean age, 55 years) who underwent three-dimensional time-of-flight (3D-TOF) MR angiograms of the circle of Willis (CoW) were obtained with the sequence of spoiled gradient-recalled acquisition (SPGR) using a 1.5-tesla MR scanner. Among the subjects studied, 184 subjects had partially complete circle of Willis, which is the commonest. Among partially complete circle of Willis, men (65.1%) are common. The commonest anterior circle variant is type A (normal anterior configuration) with a prevalence of 66%.
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