Paranasal sinus imaging

摘要: Endonasal surgery is currently extending its application beyond inflammatory sinonasal lesions to successfully treat both benign and malignant neoplasms. This progression has been possible by the detailed information provided imaging techniques (CT, MRI PET). Inflammatory diseases are "domain" of CT. CT provides excellent details about thin bony walls separating ethmoid from anterior skull base orbit. Benign neoplasms because tumor more easily separated adjacent structures, periosteal linings (periorbita, dura mater) perineural spread can be accurately shown. Whereas precisely assess pre-treatment extent, early submucosal local recurrences difficult demonstrate post-treatment changes anatomy signal treated tissues. Though diffusion-weighted dynamic contrast-enhanced promising developments, PET-CT may overcome limits morphological MRI.