Related Experiment Video
Updated: Jun 2, 2026
05:32
Transient Middle Cerebral Artery Occlusion Model of Stroke
Published on: August 11, 2023
Bilateral persistent trigeminal artery variants diagnosed by MR angiography.
1Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, Japan. auchino@saitama-med.ac.jp
Cerebellum (London, England)
|May 6, 2011
Summary
Bilateral persistent trigeminal artery variants (PTAVs), a rare vascular anomaly, were identified using MR angiography. This case represents the first reported instance of this condition diagnosed via this imaging technique.
Area of Science:
- Neurology
- Vascular Neurology
- Medical Imaging
Background:
- The persistent trigeminal artery (PTA) is the most common connection between the carotid and vertebrobasilar systems.
- A persistent trigeminal artery variant (PTAV) is a rare anomaly where the cerebellar artery originates from the internal carotid artery (ICA) without connecting to the basilar artery (BA).
Observation:
- This report details the first case of bilateral PTAVs diagnosed using magnetic resonance (MR) angiography.
- An 81-year-old woman with small infarctions presented with bilateral anterior inferior cerebellar arteries arising from the precavernous ICA segment, lacking anastomosis with the BA.
Findings:
- MR angiography successfully identified bilateral PTAVs, a rare vascular anomaly.
- The estimated prevalence of bilateral PTAVs is approximately 0.0012%.
Implications:
- This case highlights the utility of MR angiography in diagnosing rare cerebrovascular anomalies.
- Understanding the embryology of PTAVs is crucial for accurate diagnosis and potential clinical management.
Related Concept Videos
01:10The Arch of Aorta
The coronary arteries, originating from the ascending aorta, bifurcate from two sinuses located within the ascending aorta. Positioned just above the aortic semilunar valve, these sinuses house essential aortic baroreceptors and chemoreceptors, crucial for maintaining cardiac function. The left coronary artery and the right coronary artery branch off from the left posterior and anterior aortic sinuses, respectively.
Encircling the heart, the coronary arteries form a ring-like structure before...
Encircling the heart, the coronary arteries form a ring-like structure before...
01:26Arteries of the Head and Neck
The human body's intricate network of arteries ensures that every organ system receives the necessary oxygen and nutrients for optimal function. The arterial network in the head and neck region is particularly complex, providing vital blood flow to the brain, eyes, and other critical structures. Prominent arteries in this region include the internal carotid arteries and the vertebral arteries.
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
01:21Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Clinical manifestationsPeripheral Arterial Disease (PAD) manifests through a range of symptoms, from the characteristic intermittent claudication to atypical presentations and severe complications in advanced stages. Intermittent claudication, a hallmark symptom of PAD, presents as exercise-induced muscle pain that typically resolves within minutes of rest. This pain is reproducible and stems from inadequate blood flow, leading to the accumulation of lactic acid produced during anaerobic...
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...