The ivy sign
نویسندگان
چکیده
منابع مشابه
De novo ivy sign indicates postoperative hyperperfusion in moyamoya disease.
BACKGROUND AND PURPOSE The ivy sign on fluid-attenuated inversion recovery MRI is a specific finding in moyamoya disease (MMD). This sign indicates decreased cerebral perfusion, dilated pial vasculature, and slow leptomeningeal collateral flow. This study aimed to clarify the characteristics of perioperative changes in the ivy sign in relation to cerebral hyperperfusion, which frequently occurs...
متن کامل"Ivy sign" on fluid-attenuated inversion-recovery images in childhood moyamoya disease.
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 unkn...
متن کاملThe leptomeningeal "ivy sign" on fluid-attenuated inversion recovery MR imaging in Moyamoya disease: a sign of decreased cerebral vascular reserve?
BACKGROUND AND PURPOSE Moyamoya disease is an idiopathic occlusive cerebrovascular disorder with abnormal microvascular proliferation. We investigated the clinical utility of leptomeningeal high signal intensity (ivy sign) sometimes seen on fluid-attenuated inversion recovery images in Moyamoya disease. MATERIALS AND METHODS We examined the relationship between the degree of the ivy sign and ...
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While the debate over information systems and their role in society persists, the discipline continues to seek approaches to better understand IS, and its complex interactions with organizations and people. This paper draws ideas from Deleuze and Guattari’s work on rhizomes (a nonhierarchical network) and its opposing tree (arboreal structure), to develop better insights (Deleuze and Guattari 2...
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ژورنال
عنوان ژورنال: South African Journal of Radiology
سال: 2014
ISSN: 2078-6778,1027-202X
DOI: 10.4102/sajr.v18i1.622