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Research ArticlePediatrics

“Ivy Sign” on Fluid-Attenuated Inversion-Recovery Images in Childhood Moyamoya Disease

Masayuki Maeda and Chika Tsuchida
American Journal of Neuroradiology November 1999, 20 (10) 1836-1838;
Masayuki Maeda
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Chika Tsuchida
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Abstract

Summary: We report on MR studies of a 15-year-old girl with moyamoya disease in whom diffuse leptomeningeal enhancement (“ivy sign”) was revealed by fluid-attenuated inversion-recovery (FLAIR) and contrast-enhanced imaging. We speculate that the mechanism behind this enhancement is caused by a retrograde slow flow of engorged pial vasculature via leptomeningeal anastomosis. Nevertheless, it remains unknown whether the precise source of a high signal on FLAIR images is attributable to pial vessels themselves or congested thickening of the leptomeninges or both.

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American Journal of Neuroradiology
Vol. 20, Issue 10
1 Nov 1999
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“Ivy Sign” on Fluid-Attenuated Inversion-Recovery Images in Childhood Moyamoya Disease
Masayuki Maeda, Chika Tsuchida
American Journal of Neuroradiology Nov 1999, 20 (10) 1836-1838;

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“Ivy Sign” on Fluid-Attenuated Inversion-Recovery Images in Childhood Moyamoya Disease
Masayuki Maeda, Chika Tsuchida
American Journal of Neuroradiology Nov 1999, 20 (10) 1836-1838;
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Cited By...

  • Usefulness of Contrast-Enhanced 3D-FLAIR MR Imaging for Differentiating Rathke Cleft Cyst from Cystic Craniopharyngioma
  • Peek through the smoke: a report of moyamoya disease in a 32-year-old female patient presenting with ischaemic stroke
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  • MR Diagnosis of Facial Neuritis: Diagnostic Performance of Contrast-Enhanced 3D-FLAIR Technique Compared with Contrast-Enhanced 3D-T1-Fast-Field Echo with Fat Suppression
  • Decrease in Leptomeningeal Ivy Sign on Fluid-Attenuated Inversion Recovery Images after Cerebral Revascularization in Patients with Moyamoya Disease
  • Unilateral Hemispheric Proliferation of Ivy Sign on Fluid-Attenuated Inversion Recovery Images in Moyamoya Disease Correlates Highly with Ipsilateral Hemispheric Decrease of Cerebrovascular Reserve
  • The Leptomeningeal "Ivy Sign" on Fluid-Attenuated Inversion Recovery MR Imaging in Moyamoya Disease: A Sign of Decreased Cerebral Vascular Reserve?
  • Moyamoya following cranial irradiation for primary brain tumors in children
  • Unusual differential diagnosis of leptomeningeal enhancement: moyamoya disease
  • Diffuse Leptomeningeal Hyperintensity on Fluid-Attenuated Inversion Recovery MR Images in Neurocutaneous Melanosis
  • Anatomy and Functionality of Leptomeningeal Anastomoses: A Review
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  • Perfusion MR Neuroimaging in Patients Undergoing Balloon Test Occlusion of the Internal Carotid Artery
  • Arterial Hyperintensity on Fast Fluid-attenuated Inversion Recovery Images: A Subtle Finding for Hyperacute Stroke Undetected by Diffusion-weighted MR Imaging
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