581920.fig.002a
(a)
581920.fig.002b
(b)
Figure 2: (a) Axial cross-sectional MRI 3D CISS sequence with mean intensity projection through the IAC and cerebellopontine angle. Only two nerves are detected: the facial nerve (black arrow) and the vestibular nerve (white arrow). (b) Axial CT image through the mastoid shows vestibules with dysplastic morphology (white arrow). Note the absence of semicircular canals.