Related Experiment Video

Updated: Jun 9, 2026

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment
18:50

Microsurgical Clip Obliteration of Middle Cerebral Aneurysm Using Intraoperative Flow Assessment

Published on: September 25, 2009

Dual origin of the left vertebral artery: extracranial MRA and CTA findings

W Oliver Tobin1, Ronan Killeen, Justin A Kinsella

  • 1Department of Neurology, The Adelaide and Meath Hospital, Trinity College Dublin, Ireland.

Journal of the Neurological Sciences
|September 3, 2010
PubMed

Insights

A rare anatomical variant, a duplicate left vertebral artery origin, was identified in a patient with posterior circulation stroke. Non-invasive imaging is crucial for detecting such variations and understanding stroke causes.

Area of Science:

  • Neurology
  • Vascular Imaging
  • Anatomy

Background:

  • Posterior circulation stroke can result from vertebral artery stenosis.
  • Atherosclerosis is a common cause of vertebral artery stenosis.

Observation:

  • A 48-year-old man experienced a stroke due to left lateral medullary infarction.
  • Contrast-enhanced magnetic resonance angiography (CEMRA) showed 40-45% left vertebral artery stenosis.
  • CEMRA and CT angiography revealed a rare duplicate origin of the left vertebral artery.

Findings:

  • The identified duplicate vertebral artery origin is a rare anatomical variant.
  • This variant may contribute to stroke etiology.
  • Non-invasive vascular imaging is advantageous before invasive procedures.

Implications:

  • Recognizing rare anatomical variants like duplicate vertebral arteries is critical in stroke cases.
  • Understanding these variants aids in accurate diagnosis and treatment planning.
  • Non-invasive imaging techniques are valuable for pre-procedural assessment in cerebrovascular disease.

More Related Videos

Transient Middle Cerebral Artery Occlusion Model of Stroke05:32

Transient Middle Cerebral Artery Occlusion Model of Stroke

Published on: August 11, 2023

Creation of Two Saccular Elastase-Digested Aneurysms with Different Hemodynamics in One Rabbit07:04

Creation of Two Saccular Elastase-Digested Aneurysms with Different Hemodynamics in One Rabbit

Published on: April 15, 2021

Related Concept Videos

The Arch of Aorta01:10

The 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...
Abdominal Aorta01:25

Abdominal Aorta

Once the aorta traverses the diaphragmatic plane at the aortic hiatus, it is known as the abdominal aorta. This anatomical structure is positioned leftward of the spinal column, encased within a cocoon of adipose tissue behind the peritoneal cavity. It terminates at the L4 vertebra, where it splits into the common iliac arteries. Prior to this bifurcation, the abdominal aorta gives rise to several vital branches.
The celiac trunk, a singular artery, divides into the left gastric artery, which...
Aortic Regurgitation II: Clinical Features and Diagnostic Tests01:22

Aortic Regurgitation II: Clinical Features and Diagnostic Tests

Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...