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Endolymphatic hydrops after intravenous injection of gadolinium contrast agent

Structural images of the inner ear showing no, mild, and significant endolymphatic hydrops, after intravenous injection of an ordinary dose of gadolinium (Gd) contrast agent with a 3T MRI. Arrows and arrowheads indicate endolymphatic hydrops in the cochlea and in the vestibule, respectively. (Source: Mohseni-Dargah M, Falahati Z, Pastras C, et al. Meniere's disease: Pathogenesis, treatments, and emerging approaches for an idiopathic bioenvironmental disorder. Environ Res. 2023;238[Pt 1]:116972. Creative Commons Attribution 4.0 International [CC BY 4.0] license, creativecommons.org/licenses/by/4.0.)