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. 2021 May 31;8:662530. doi: 10.3389/fsurg.2021.662530

Figure 2.

Figure 2

SR-PCI of a left human ear with 3D reconstructions of saccule (red) and utricle (green) (lateral view). The entrance gate to the internal opening of the VA (broken arrow) and the UEV (*) can be seen. The saccule wall contains a reinforced semilunar portion that additionally thickens (blue) against the thinner part. The thinner part and the saccular duct are difficult to discern. BM, basilar membrane. RD, reunion duct.