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The effect of decreasing voxel opacity (right to left) using ray tracing. The images are volume renderings of the same normal data set using method 2 (ray casting with transparent voxels). The opacity values of the voxels have been progressively decreased from left to right in order to demonstrate more internal details of the cochlea. The scala vestibuli and scala tympani are clearly seen in the middle and right-hand images, although their margins are rather poorly defined
