You may find that representation of very thin membranes and curves requires very high resolution segmentation. If your computer cannot handle sufficiently high-resolution segmentations (it runs out of physical memory and starts swapping memory to disk, making everything extremely slow) then you can model them using curves and curved surfaces.
You can use Markups Curves to “segment” stapes and the newly added Baffle planner module to create a model of the membrane.
I would think so. You may contact members of the Auditory Medical Biophysics Lab at Western University to get more information.