Prerequisite for Endoscopic sinus surgery
Recent research on inflammatory sinus disease has implicated a central role for the ethmoid labyrinth, which may influence changes in the maxillary and frontal sinuses. CT can provide an excellent definition of the paranasal sinuses and paicularly the ethmoids, which is a prerequisite for endoscopic surgery. Direct coronal CT can readily demonstrate disease in the infundibulum, frontal recess and posterior ethmoids in the same orientation confronting the endoscopist and helps in the planning of ethmoidal surgery.
MRI of paranasal sinus
CT of PNS
Mucocilliary clearing testing
Acoustic tests
Nose and paranasal sinuses