Imaging Characteristics of Persistent Carotid-Vertebrobasilar Anastomoses Detected by Ultrasound: A Case Series
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View abstract on PubMed
Summary
This summary is machine-generated.This study evaluated persistent carotid-vertebrobasilar anastomoses (PCVBA) using ultrasound. The findings highlight specific arterial variants and their distinct flow characteristics, aiding in diagnosis.
Area Of Science
- Neurology
- Vascular Imaging
- Anatomy
Background
- Persistent carotid-vertebrobasilar anastomoses (PCVBA) represent rare variations in cerebral circulation.
- Understanding these variants is crucial for accurate diagnosis and management of cerebrovascular conditions.
Observation
- This case series analyzed the ultrasonic characteristics of 35 patients with PCVBA.
- Ultrasound identified specific variants: primitive trigeminal artery (PTA), primitive hypoglossal artery (PHA), and proatlantal intersegmental artery (PIA).
Findings
- Primitive hypoglossal arteries (PHA) and proatlantal intersegmental arteries (PIA) were observed as abnormal branches from the carotid arteries.
- These variants were often associated with hypoplastic vertebral arteries exhibiting low velocities and high resistances.
- Basilar arteries demonstrated normal blood flow, contrasting with the affected vertebral arteries.
Implications
- Ultrasonic evaluation is effective in characterizing PCVBA and its associated anomalies.
- Recognizing these variants and their hemodynamic profiles improves diagnostic accuracy.
- This knowledge aids in differentiating normal variants from pathological findings in cerebrovascular imaging.
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