Duplex scanning of normal vertebral arteries.

Area of Science:

• Vascular anatomy
• Diagnostic imaging
• Neurology

Background:

• The vertebral arteries are crucial for supplying blood to the brain.
• Understanding their normal anatomy and variations is essential for diagnosing cerebrovascular diseases.
• Duplex scanning offers a noninvasive approach to assess these vessels.

Purpose of the Study:

• To evaluate the efficacy of Duplex scanning in visualizing different segments of the vertebral arteries.
• To determine the visualization rates and identify dominance patterns of the vertebral arteries in a healthy population.
• To assess the prevalence of hypoplasia in vertebral arteries.

Main Methods:

• Duplex scanning was performed on 50 healthy individuals.
• Specific segments of the vertebral arteries, including pretransverse, intertransverse (C6-C5, C5-C4), and C4-C3 segments, were targeted for visualization.
• The ostium of each vertebral artery was also assessed.

Main Results:

• All pretransverse and C6-C5, C5-C4 intertransverse segments were visualized bilaterally.
• The C4-C3 segment visualization rates were 100% on the right and 90% on the left.
• Ostium visualization was achieved in 94% (right) and 60% (left) of cases, with left vertebral artery dominance noted in 48% and right in 14%.

Conclusions:

• Duplex scanning is a practical, noninvasive technique for studying vertebral artery morphology and hemodynamics.
• The study provides detailed visualization success rates for various vertebral artery segments and highlights common dominance patterns.
• Findings contribute to the noninvasive assessment of cerebrovascular anatomy and potential pathologies.