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Asymmetrical Gadolinium Leakage in Ocular Structures in Stroke Due to Internal Carotid Artery Stenosis or Occlusion

  • A. Förster
  • H. Wenz
  • J. Böhme
  • C. Groden
  • A. Alonso
Original Article
  • 37 Downloads

Abstract

Purpose

Gadolinium leakage in ocular structures (GLOS) on fluid-attenuated inversion recovery images (FLAIR) is a novel imaging marker in acute ischemic stroke. The present study sought to investigate the frequency and pattern of blood-retina barrier impairment in acute ischemic stroke due to internal carotid artery (ICA) stenosis or occlusion as demonstrated by GLOS.

Methods

From a magnetic resonance imaging (MRI) report database patients were identified with acute ischemic stroke due to ICA stenosis/occlusion who underwent repeated MRI with intravenous contrast agent administration and FLAIR and MR angiography (MRA). On FLAIR the presence of GLOS was noted in the vitreous body.

Results

Overall 51 patients with a median age of 70 years (interquartile range, IQR 63–77 years) were included. Of these, 22 (43.1%) patients had an ICA stenosis and 29 (56.9%) an ICA occlusion. On contrast-enhanced FLAIR, GLOS was observed in 29 (56.9%) patients: in 7 (13.7%) unilateral, in 15 (68.2%) bilateral asymmetrical and in 7 (31.8%) bilateral symmetrical. In unilateral asymmetrical GLOS, more pronounced enhancement was always found ipsilateral to ICA stenosis/occlusion. In 4 (5.9%) patients with asymmetrical GLOS a pre-existing signal increase in the vitreous body was found on native FLAIR. The presence of GLOS was associated with an impaired collateralization through the circle of Willis (p < 0.001) and external carotid artery branches (p = 0.03).

Conclusion

In patients with ischemic stroke due to ICA stenosis/occlusion, GLOS is frequent, commonly unilateral or bilateral asymmetrical, and in some patients associated with pre-existing ocular signal abnormalities. An insufficient collateralization may contribute to the development of unilateral/asymmetrical GLOS.

Keywords

Contrast-enhanced FLAIR GLOS Internal carotid artery occlusion ICA Stroke 

Notes

Conflict of interest

A. Förster, H. Wenz, J. Böhme, C. Groden and A. Alonso declare that they have no competing interests.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • A. Förster
    • 1
  • H. Wenz
    • 1
  • J. Böhme
    • 1
  • C. Groden
    • 1
  • A. Alonso
    • 2
  1. 1.Department of Neuroradiology, Universitätsmedizin MannheimUniversity of HeidelbergMannheimGermany
  2. 2.Department of Neurology, Universitätsmedizin MannheimUniversity of HeidelbergMannheimGermany

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