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A simple technique for morphological measurement of cerebral arterial circle variations using public domain software (Osiris)  

Ansari, Saeed (Department of Neurosurgery, University of Florida, Gainesville)
Dadmehr, Majid (Department of Neurosurgery, Tehran University of Medical Sciences)
Eftekhar, Behzad (Department of Neurosurgery, Dunedin Hospital, Dunedin)
McConnell, Douglas-J. (Department of Neurosurgery, University of Florida, Gainesville)
Ganji, Sarah (Department of Neurosurgery, University of Florida, Gainesville)
Azari, Hassan (Department of Anatomical Sciences, Shiraz University of Medical Sciences)
Shahab, Kamali-Ardakani (Department of Neurosurgery, Tehran University of Medical Sciences)
Hoh, Brian-L. (Department of Neurosurgery, University of Florida, Gainesville)
Mocco, J. (Department of Neurosurgery, University of Florida, Gainesville)
Publication Information
Anatomy and Cell Biology / v.44, no.4, 2011 , pp. 324-330 More about this Journal
Abstract
This article describes a straightforward method to measure the dimensions and identify morphological variations in the cerebral arterial circle using the general-purpose software program Osiris. This user-friendly and portable program displays, manipulates, and analyzes medical digital images, and it has the capability to determine morphometric properties of selected blood vessels (or other anatomical structures) in humans and animals. To ascertain morphometric variations in the cerebral arterial circle, 132 brains of recently deceased fetuses, infants, and adults were dissected. The dissection procedure was first digitized, and then the dimensions were measured with Osiris software. Measurements of each vessel's length and external diameters were used to identify and classify morphological variations in the cerebral arterial circle. The most commonly observed anatomical variations were uni- and bilateral hypoplasia of the posterior communicating artery. This study demonstrates that public domain soft ware can be used to measure and classify cerebral arterial circle vessels. This method could be extended to examine other anatomical regions or to study other animals. Additionally, knowledge of variations within the circle could be applied clinically to enhance diagnostic and treatment specificity.
Keywords
Anatomy; Cerebral arterial circle; Anatomical variation; Circle of Willis; Methods;
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