Paranasal sinuses | Radiology Reference Article - Radiopaedia.org
Feb 17, 2024 · Normal mucosa of the paranasal sinuses appear hyperintense on T2-weighted images 4. The maxillary and ethmoidal sinuses are the first to develop, followed by frontal and sphenoidal sinuses 3.
Coronal approach - AO Foundation Surgery Reference
The extensive pericranial flap provides a large apron of vascularized tissue for repair of the frontal sinus and anterior skull base. After subperiosteal dissection of the forehead and the supraorbital region, the reach of the flap increases again.
Anatomy, Head and Neck, Nose Paranasal Sinuses
Feb 11, 2023 · Frontal Sinus. The frontal sinus is a highly variable air-filled anatomical structure located superior to the orbit and within the frontal bone. Its shape and size depend on climate and ethnicity but is more or less pyramidal in adults, and the typical volume is 4 to 7 mL.
• Standard coronal CT is INADEQUATE to understand 3D sinus anatomy, particularly in the frontal recess • Axial thin section (<1mm) helical CT • Axial, coronal, and sagittal reconstruction (3 mm thick or less) • Bone and soft tissue windows • Patients should only be scanned after a trial of maximal medical therapy (3-6 wks)
ostiomeatal complex (OMC) is key to understanding paranasal sinus anatomy and drainage. e complex is composed of anterior and posterior ostiomeatal units. anterior ostiomeatal unit is composed of the frontal sinus ostium, the frontal recess, the maxillary sinus ostium, the infundibulum, and middle meatus.
CT Scan of the Paranasal Sinuses - Medscape
Feb 2, 2023 · Coronal view demonstrating well-pneumatized frontal sinuses (FS), the ethmoid bulla (b), and the lamina papyracea (LP). Also of interest is the presence of an aerated middle turbinate or concha...
Frontal Sinus Morphological and Dimensional Variation as Seen …
The frontal sinus is an important cavity inside an individual’s forehead and has been used by forensic anthropologists to provide positive identifications due to its highly unique structure from person to person, yet researchers still do not fully understand why it forms as it does.
Pictorial essay: Anatomical variations of paranasal sinuses on ...
The frontal recess refers to the narrowest anterior air channels that communicate with the frontal sinus. They are common sites of inflammation. The walls of the recess are formed by the agger nasi cell anteriorly, the lamina papyracea laterally, and the middle turbinate medially [ Figure 1B ].
Fig. 1 Coronal sections (A-D) computed tomography scan depicting the anatomy of the frontal sinus drainage pathway and surrounding structures.
The Frontal Sinus Drainage Pathway and Related Structures
Sep 1, 2003 · The purpose of this pictorial essay is to provide a visual guide to the frontal sinus drainage pathway (FSDP), associated anatomic structures, and normal variations in sinus anatomy ([Figs 1][1]–[9][2]).