Clinical Perspective

The ivy sign

Nasreen Mahomed, Evance Chisama, Sanjay Prabhu
South African Journal of Radiology | Vol 18, No 1 | a622 | DOI: https://doi.org/10.4102/sajr.v18i1.622 | © 2014 Nasreen Mahomed, Evance Chisama, Sanjay Prabhu | This work is licensed under CC Attribution 4.0
Submitted: 14 April 2014 | Published: 05 December 2014

About the author(s)

Nasreen Mahomed, Department of Radiology, University of the Witwatersrand, South Africa; Consultant radiologist, Chris Hani Baragwanath Hospital, South Africa, South Africa
Evance Chisama, Department of Radiology, University of the Witwatersrand, South Africa, South Africa
Sanjay Prabhu, Department of Radiology, Boston Children’s Hospital, Harvard Medical School, United States of America


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Abstract

The ivy sign refers to diffuse bilateral leptomeningeal enhancement on post- contrastT1-weighted magnetic resonance imaging (MRI) and increased signal intensity in bilateralsubarachnoid spaces and perivascular spaces on T2-weighted fluid attenuation inversionrecovery (FLAIR) MRI sequences in patients with moyamoya disease.


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