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European Radiology Experimental
Fig. 1 | European Radiology Experimental

Fig. 1

From: Differentiation of vestibular schwannomas from meningiomas of the internal auditory canal using perilymphatic signal evaluation on T2-weighted gradient-echo fast imaging employing steady state acquisition at 3T

Fig. 1

Visual example of the placement of ROIs for the quantitative analysis of the inner ear fluids’ signal. For each labyrinth, a 1-mm2 ROI was placed on an axial section in the utricle (endolymph, red arrow). A 0.5-mm2 ROI was positioned on a coronal section in the saccule (endolymph, red arrow). A 1-mm2 ROI was placed in both the vestibular cistern and the tympanic portion of the basal turn of the cochlea (perilymph, yellow arrow). An additional 1.5-mm2 ROI was placed in the CSF of the homolateral CPA (green arrow)

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