Normal Variants of Circle of Willis in MR Angiography among Puducherry Population
Journal Title: Journal of Medical Science And clinical Research - Year 2018, Vol 6, Issue 4
Abstract
Introduction: Circle of Willis is the great arterial anastomotic ring at the base of the brain and is an important pathway to maintain adequate blood supply to the brain. In case of arterial occlusion, it is the important source of collaterals to the occluded territory. A detailed knowledge of the normal anatomy of circle of Willis, its anomalies and clinical significance helps the neurosurgeon for planning and keeps away from vascular trauma during surgeries. Materials and Methods: A retrospective study was conducted on 312 patients (188 men and 124 women). 3 dimensional time of flight Magnetic resonance angiogram technique was used. Variations in the Circle of Willis were evaluated. Results: The findings show that majority of circle showed anomalies. Percentage of complete circle was slightly higher in males and young subjects. Normal variants are more common in anterior part of the circle and the most common normal variant is the absent anterior communicating artery (34%). Conclusion: Magnetic resonance angiogram is the sensitive technique for detecting the anatomy of Circle of Willis. Variations in anterior circulation may be asymptomatic and may reduce complications. Knowledge of the presence of Circle of Willis and its variants plays an important role in planning of neurological procedures or may be mistaken for pathologies.
Authors and Affiliations
Dr K. S . Kaviyavarshini
Keywords
Related Articles
- EP ID EP511937
- DOI -
- Views 59
- Downloads 0
Ocular Manifestation of Moyamoya Disease- Rare Case Report
Moyamoya disease (MMD) is a distinct entity, mostly found in Japan but cases are reported from many parts of the world. It is an angiopathy involving intracranial distal ends of internal carotid arteries (ICA). It may in...
Bilateral Multicentric Metachronous Benign Phylloides Tumor: A Rare Presentation
Phylloides tumor is rare stromal tumor of breast. It is common in median age group. It is known for its presentation as unilateral huge mass. However, the diagnosis of phylloides tumor can be neither made or nor ruled ou...
A Report on Outbreak investigation of Dengue in Bihar in 2015
Dengue outbreak is repeatedly being reported in Bihar. In 2015, many districts were affected with the disease. Outbreak investigation was carried in Patna, Bhojpur, Aurangabad and Gaya district Bihar to determine the cau...
Seasonal Variation of Vitamin D in Ischemic Stroke
This study aimed to investigate the seasonal variation of serum vitamin D level in ischemic stroke patients. 217 patients with ischemic stroke were selected for analysis between ages 45 and 80 yrs admitted at our hospita...
Detection of ESBL Producers in Gram Negative Clinical Isolates
ESBL is a matter of great concern in hospitalized patients and a global challenge. The high incidence of beta-lactamase production due to multiple mechanism in clinical isolates is alarming and screening of ESBL strains...