Imaging of the Cerebellopontine Angle
Abstract The cerebellopontine angle (CPA) cistern is a subarachnoid space centered within the posterior cranial fossa at the level of the internal auditory canal and bordered medially and laterally by…
Petrous Apex
Abstract Petrous apex abnormalities are usually incidentally detected on imaging for unrelated symptoms. Their deep location precludes direct clinical examination and easy percutaneous biopsy. Therefore, the radiologist plays a key…
Temporal Bone Trauma
Abstract Temporal bone fractures are divided into longitudinal and transverse fractures, each with their particular clinical features. Transverse fractures mainly cause conductive hearing loss, whereas longitudinal fractures almost invariably cause…
Neurointerventional Radiology for Skull Base Lesions
Abstract Neurointerventional radiology has many applications in the skull base. We focus on preoperative embolization to hypervascular tumors and embolization of the vascular lesion, in a hope to keep in-depth…
Imaging of the Facial Nerve
Abstract Facial nerve dysfunction can occur from a variety of causes, including congenital, inflammatory, traumatic, vascular, and neoplastic processes. Imaging plays an important role in the evaluation of facial nerve…
Imaging of the Postoperative Middle Ear, Mastoid, and Internal Auditory Canal
Abstract Interpretation of CT or MR imaging examinations performed on patients with a history of middle ear, mastoid, or neurotologic surgery can be challenging. This is greatly simplified by knowing…
Imaging in Endoscopic Endonasal Skull Base Surgery
Abstract The endoscopic endonasal approach has become the preferred surgical approach to many tumors of the ventral skull base, both benign and malignant. This approach represents an amalgamation of various…
Temporal Bone Inflammatory and Infectious Diseases
Abstract Imaging is recommended only in the aggressive so-called necrotizing variant of external otitis, seen in diabetic patients. Acute otomastoiditis and coalescent mastoiditis with subperiostal abscess formation are almost exclusively…
Imaging of the Paranasal Sinuses and Their Surgical Relevance
Abstract Preoperative CT is important in planning functional endoscopic sinus surgery (FESS). An understanding of the sinus anatomy, normal variations, and their clinical implications is important in minimizing unexpected or…
The Sphenoid Bone
Abstract The sphenoid bone is located at the central skull base and is commonly considered the most complex bone in the human body. It forms the major boundary between the…
