Figure Legends
Fig. 1 An example of the region of interest (ROI) setting on a contrast-enhanced 3D-FLAIR image. The ROI (the area ofROI = 1mm2) for the cochlear fluid signal intensity measurement is manually drawn around the basal turn of the cochlea. Circular ROIs for the signal intensity measurement of the brainstem (the area ofROI = 4mm2) and the cerebellopontine angle (the area ofROI = 4mm2) are set in the most artefact-free area of the brainstem center and the ipsilateral cerebellopontine angle.
Fig. 2 A 39-year-old male Ménière’s disease. Fig. a 3D-FLAIR images at the left cochlear basal turn level were obtained 4 h, 6 h ,8 h and 10 h after the administration of GBCM. Signal intensity of the cochlear fluid in the basal turn is highest on the images obtained 6 h after contrast administration (arrows). Fig. bThe signal intensity ratio between the cochlea and the brainstem on 3D-FLAIR image were plotted for the patient. The signal intensity ratio (SIR) was highest at 6 h after contrast administration.
Fig. 3 A 52-year-old male Ménière’s disease. Fig. aThescan angle with the anterior skull base in the sagittal position was 10.8 degrees. When scanned at this angle, we get Fig. b. Fig. b The 3D FLAIR image display the relative maximum areas of the saccule (solid arrows), utricle (dotted arrows) and the lateral semicircular canal (arrowheads) on the same level. Fig. cThescan angle with the anterior skull base in the sagittal position was 0 degrees. When scanned at this angle, we get Fig. d. Fig. d The 3D FLAIR image display the saccule (solid arrows), utricle (dotted arrows), but the posterior part of the lateral semicircular canal (arrowheads) is not shown on the same level simultaneously.