Features of Brain Magnetic Resonance Imaging Diffusion-Weighted Images of Aortogenic Embolic Stroke : Comparison With Cardioembolic Stroke

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  • Shimada Jun-Ichiro
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center Department of Neurology, Graduate School of Medicine, Chiba University
  • Yasaka Masahiro
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center
  • Wakugawa Yoshiyuki
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center
  • Ogata Toshiyasu
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center
  • Makihara Noriko
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center
  • Ito Shoichi
    Department of Neurology, Graduate School of Medicine, Chiba University Office of Medical Education, Graduate School of Medicine, Chiba University
  • Kuwabara Satoshi
    Department of Neurology, Graduate School of Medicine, Chiba University
  • Okada Yasushi
    Department of Cerebrovascular Medicine and Neurology, Cerebrovascular Center and Clinical Research Institute, National Hospital Organization Kyushu Medical Center

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タイトル別名
  • Features of Brain Magnetic Resonance Imaging Diffusion-Weighted Images of Aortogenic Embolic Stroke
  • – Comparison With Cardioembolic Stroke –

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Background: The features of acute aortogenic embolic stroke on magnetic resonance diffusion-weighted imaging (DWI) have not been fully elucidated, so we compared patients with acute aortogenic embolic stroke and those with acute cardioembolic stroke. Methods and Results: This study included 40 consecutive patients with acute aortogenic embolic stroke, and 40 age- and sex-matched patients with acute cardioembolic stroke. The diagnosis of aortogenic embolic stroke was made when patients met 5 criteria: (1)acute neurologic event lasting >24h; (2) positive signals on DWI; (3) atherosclerotic lesions ≥3.5-mm thick at the aortic arch on transesophageal echocardiography; (4) neuroradiologic features suggesting embolic stroke, such as lesions involving the brain cortex or the re-opening phenomenon of previously occluded vessels on Magnetic Resonance Angiography (MRA); and (5) absence of other embolic sources, including heart disease and carotid stenosis. The number, site, and maximal diameter of the infarct lesions on DWI were compared between the aortogenic and cardiogenic groups. The aortogenic patients more frequently had ≥3 lesions (25.0% vs. 2.5%, P<0.01), lesions with a maximal diameter <30mm (77.5% vs. 20.0%, P< 0.001), and vertebrobasilar system lesions (55.0% vs. 10.0%, P< 0.001) than the cardiogenic patients. Conclusions: Acute aortogenic embolic stroke is characterized by multiple (≥3) and small lesions, and involvement of the vertebrobasilar system.  (Circ J 2014; 78: 738–742)<br>

収録刊行物

  • Circulation Journal

    Circulation Journal 78 (3), 738-742, 2014

    一般社団法人 日本循環器学会

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