Attic Ct Anatomy

The tympanic membrane the malleus incus and stapes transfer soundwaves to the stapes footplate which is attached to the base of the cochlea in the oval window.

Attic ct anatomy.

Ct scan of head and neck. The aditus to mastoid antrum otomastoid foramen or entrance or aperture to the mastoid antrum is a large irregular cavity that leads backward from the epitympanic recess into a considerable air space named the tympanic or mastoid antrum. The defect was closed with a flap of temoral muscle and a chain recontruction was done. The attic floor tympanic diaphragm the tympanic isthmus and the aditus ad antrum play important roles in inflammatory processes of the middle ear cleft.

Mesotympanum directly medial to the membrane. The anatomy of the temporal bone at this level was examined by studying microdissections of 250 fresh temporal bones and. Anatomy of the head and neck ct scan ct scan of head and neck. The epitympanum also known as the attic or epitympanic recess is the most superior portion of the tympanic cavity.

Ct scan of head and neck. The new erosive changes are consistent with recurrent cholesteatoma with associated complications. Inflammation of the middle ear cleft is a disease of great interest from both clinical and radiologic points of view. Posteriorly the epitympanum is in direct continuity with the mastoid antrum via the aditus ad antrum and thence the mastoid air cells.

The tympanic cavity is subdivided into several parts defined in relation to the planes of the tympanic membrane. Axial ct scan shows a soft tissue mass within the left attic extending anteriorly to involve the anterior epitym panic recess and eroding the cog and the ossicles arrow. The antrum and mastoid air cells. An mri depicts a mass in the mastoid abutting the dura.

Ct shows a rounded mass arrow in the attico antrotomy with erosion of the tegmen tympani. The attic floor tympanic diaphragm the tympanic isthmus and the aditus ad antrum play important roles in inflammatory processes of the middle ear cleft. As compared to the prior postoperative study the current coronal noncontrast ct image of the left temporal bone demonstrates increased soft tissue opacification of the attic and mastoid antrum increased erosion of the scutum red circle and new defects in the lateral semicircular canal curved arrow and tegmen tympani straight arrow. The dura was intact.

At operation a large cholesteatoma was removed. Clinical and radiologic points of view. Hypotympanum inferior to the membrane. The antrum communicates behind and below with the mastoid air cells which vary considerably in number size and form.

Epitympanum attic epitympanic recess superior to the membrane. Radiological anatomy of the head and neck on a ct in axial coronal and sagittal sections and on a 3d images. Some authors define three compartments 4. The anatomy of the temporal bone at this level was examined by studying microdissections of 250 fresh temporal bones and reviewing over 1 000 high resolution computed tomography ct scans of the temporal bones.