Variations in the brain circulation – the circle of Willis
Journal Title: Indian Journal of Neurosciences - Year 2016, Vol 2, Issue 2
Abstract
Background Knowledge of the variations of vascular anatomy of Circle of Willis will guide the neurosurgeons during intracranial surgery. Objectives: The aim of our study is to analyze the variations regarding shape, symmetry, length and diameters of the component arteries. The study also includes other variations like absence, duplication and abnormal origin of component arteries. Methods: In the present study 31 specimens of human brains are obtained from the Department of Anatomy IIMSR Warudi, Badnapur, Dist. Jalna. Careful observation & measurement of the component arteries are done after proper preservation and necessary dissection. The findings are then recorded and analyzed. Results: There were 21 out of 31 specimens (67.74%) found to be classic form of ‘Circle of Willis’, that was, complete, symmetrical, normal caliber and heptagonal in shape. These 21 specimens have, therefore, been considered as ‘Normal’. The rest 10 specimens (33.5%) of human brain were shows variations. Conclusion: Out of 33.5% variations most of the variations are seen in posterior communicating artery 3.22%, followed by anterior cerebral artery (6.45%) and anterior communicating artery (6.45%). Most common type of variation is hypoplasia.
Authors and Affiliations
Syed Yaseen, Zuberi Hussain Riyaz, Azhar Ahmed Siddiqui
Role of MRI in evaluation of Compressive myelopathy
• Compressive Myelopathy is the term used to describe the spinal cord compression either from outside or within the cord itself. • Spinal cord injury is the major cause of quadriplegia and disability. • Plain radiographs...
Intracerebral giant hydatidosis in an adult woman – A case report
Intracranial hydatid cysts account for 053 of all the cases of hydatid disease and contribute to 12 of all the intracranial space occupying lesions Rare cases of intracranial hydatid disease have been reported in India I...
Clinical study on task specific dystonia among beedi workers
Task specific dystonia is a form of isolated focal dystonia with a peculiarity of being displayed only during performance of specific skilled motor task This distinctive makes task specific dystonia a particularly myster...
Isolated carotid webs - An uncommon cause of recurrent strokes
Carotid webs are an evolving diagnosis made more often now than before the advent of angiography The webs are defined as a small intimal outgrowth that forms an obstruction to the streamlined flow of blood in the carotid...
To establish the role of serum ferritin as a prognostic marker in patients of stroke
Introduction Stroke is the second leading cause of death worldwide The incidence of cerebrovascular diseases increases with age 1 Accurate prognostication of stroke patients is difficult many timesMaterials and Methods A...