Upper airway model

Operating system:win 10
Slicer version:4.7
i want to model upper air way ,but i can not get the passage between the pharynx , and the oral cavity , do you have any suggestions to get the upper air way complete

image

In the images that you attached the passage doesn’t seem to be visible. I guess it’s blocked by the tongue. If it’s possible to ask the patient to breathe through the mouth during imaging then probably the passage would be visible.

You can still connect the pharynx and oral cavity by painting a passage using Paint or Draw effect where you expect it to be. Or, you can contour the tongue, tonsils, palate, etc. with different segments and the passage is at the boundary surface of segments.