Fig. 2From: Signal and morphological changes in the endolymph of patients with vestibular schwannoma on non-contrast 3D FLAIR at 3 TeslaExamples of qualitative and semi-quantitative analyses of the endolymph on the affected side. a–c Visualization of the endolymph: The endolymphatic spaces of the vestibule and semicircular canals were not visualized on PPI for grade 2 (a), but were visualized on PPI for grade 2 (b, arrows) and the corresponding HYDROPS (c). d–f Signal change in the endolymph: The endolymph of the lateral semicircular canal showed no signal change on PPI for grade 0 (d same as Fig. 1a, arrow), whereas signal change was observed on PPI for grade 0 (e, arrow) as well as the corresponding HYDROPS (f, arrow). g–i Endolymphatic hydrops on PPI for grade 2: Vestibular hydrops was graded as no (g, arrows), mild (h, arrows), and significant (i, arrows)Back to article page