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NOVEMBER 2019 Clinical Case Vid. 3

Video Author: The Hearing Journal
Published on: 10.31.2019
Associated with: The Hearing Journal. 72(11):40,42,43, November 2019

Video 3. Coronal (parallel to face) CT showing thenormal vs. an abnormally widened IAC in the coronalplane.

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Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial (horizontal) CT of the right temporal bone showing the widened IAC.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Axial (horizontal) CT of the left temporal bonedemonstrating the normal IAC.
Creator: The Hearing Journal
Duration: 00:09
Video 3. Coronal (parallel to face) CT showing thenormal vs. an abnormally widened IAC in the coronalplane.
Creator: The Hearing Journal
Duration: 00:11
Video 4. Axial (horizontal) CISS -sequence MRIshowing the tumor on the right (left side of theimages) IAC.
Creator: The Hearing Journal
Duration: 00:11
Video 5. Axial (horizontal) T1 non-contrast MRIdemonstrating the mass on the right IAC.
Creator: The Hearing Journal
Duration: 00:09
Video 6. Coronal (parallel to face) T1 MRI showing themass on the coronal plane.
Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial (horizontal) CT of the left temporal bone showing the deeply inserted electrode.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Axial (horizontal) CT of the right temporal bone showing the normally inserted electrode
Creator: The Hearing Journal
Duration: 00:10
Video 3. Coronal (parallel to the face) CT of the left temporal bone showing the deeply inserted electrode position in the coronal plane.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Coronal (parallel to the face) CT of the right temporal bone demonstrating a normal electrode position.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Sagittal (parallel to auricle) images of the left temporal bone showing electrodes in the apical turn of the cochlea, where a 20 mm electrode should not be present.
Creator: The Hearing Journal
Duration: 00:10
Video 6. Sagittal (parallel to auricle) images of the right temporal bone demonstrating the normal appearance of electrodes in the cochlea on sagittal imaging.
Creator: The Hearing Journal
Duration: 00:16
Video 1. Axial (horizontal) T1 post-gadolinium 3 mm cut MRI does not show the contrast within thesigmoid sinus due to fast-flowing and thick imaging slices.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Coronal (parallel to face) time-of-flight (TOF) sequence MRI showing the sigmoid sinus anatomyand the intracranial venous system.
Creator: The Hearing Journal
Duration: 00:10
Video 3. Magnetic resonance venography (MRV) threedimensionalreconstruction of the TOF sequence turning inthe axial plane.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Axial (horizontal) T1 MPRAGE post-gadolinium1 mm cut MRI showing the sigmoid sinus diverticulum.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Axial (horizontal) CT temporal bones showing theextension of the diverticulum into the subcutaneous tissues.
Creator: The Hearing Journal
Duration: 00:15
Video 6. Coronal (parallel to the face) CT temporal bonesshowing the relationship between the sigmoid sinus andskull base.
Creator: The Hearing Journal
Duration: 0:10
Video 1. Axial (horizontal) bone window CT of the temporal bones showing the mass and bullet fragments scattered in the skull. The intense white in the carotid canal is previous coiling of the carotid artery.
Creator: The Hearing Journal
Duration: 0:10
Video 2. Axial (horizontal) soft tissue window CT of the temporal bone showing the extent of the mass.



Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial (horizontal) CT of the right temporal bone showing the widened IAC.
Creator: The Hearing Journal
Duration: 00:11
Video 4. Axial (horizontal) CISS -sequence MRIshowing the tumor on the right (left side of theimages) IAC.
Creator: The Hearing Journal
Duration: 00:09
Video 6. Coronal (parallel to face) T1 MRI showing themass on the coronal plane.
Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial (horizontal) CT of the left temporal bone showing the deeply inserted electrode.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Axial (horizontal) CT of the right temporal bone showing the normally inserted electrode
Creator: The Hearing Journal
Duration: 00:10
Video 6. Sagittal (parallel to auricle) images of the right temporal bone demonstrating the normal appearance of electrodes in the cochlea on sagittal imaging.
Creator: The Hearing Journal
Duration: 00:16
Video 1. Axial (horizontal) T1 post-gadolinium 3 mm cut MRI does not show the contrast within thesigmoid sinus due to fast-flowing and thick imaging slices.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Coronal (parallel to face) time-of-flight (TOF) sequence MRI showing the sigmoid sinus anatomyand the intracranial venous system.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Axial (horizontal) T1 MPRAGE post-gadolinium1 mm cut MRI showing the sigmoid sinus diverticulum.
Creator: The Hearing Journal
Duration: 00:15
Video 6. Coronal (parallel to the face) CT temporal bonesshowing the relationship between the sigmoid sinus andskull base.
Creator: The Hearing Journal
Duration: 0:10
Video 2. Axial (horizontal) soft tissue window CT of the temporal bone showing the extent of the mass.
Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial CT of the right temporal bone showing the dehiscence of the horizontal canal.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Coronal CT of the right temporal bone showing a likely cholesteatoma filling the mastoid
Creator: The Hearing Journal
Duration: 00:09
Video 4. Axial T2-weighted MRI of the brain showing hyperintensity in the right mastoid cavity, which indicates high water (proton) content.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Axial T1 post-contrast MRI images showing no enhancement in the right mastoid, which indicates dead (non-vascular) tissue.
Creator: The Hearing Journal
Duration: 00:10
Video 6. Axial diffusion-weighted MRI showing hyperintensity in the mastoid, which likely indicates cholesteatoma.
Creator: The Hearing Journal
Duration: 00:11
Video 5. Axial T2 MRI showing significant inflammatory changes in the entire temporal bone.
Creator: The Hearing Journal
Duration: 00:11
Video 6. Coronal T1 post-gadolinium MRI showing the inflammation along the skull base.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Axial T1 post gadolinium MRI of the brain obtained in2010 showing a detailed axial view of the transverse andsigmoid sinuses and the narrowed areas.
Creator: The Hearing Journal
Duration: 00:13
Video 6. Coronal T1 post gadolinium MRI of the brain obtainedin 2010 showing the coronal view of the transverse andsigmoid sinuses and corresponding narrowing on the left.
Creator: The Hearing Journal
Duration: 00:10
Video 1. Subtraction MR arteriography (three-dimensional view of all arteries) of the patient with spinning inthe lateral direction showing the blushing of vessels around the cavernous carotid.
Creator: The Hearing Journal
Duration: 00:11
Video 2. Axial (horizontal), thin-sliced MRI with time-of-flight sequence showing the arterial flow (bright) withclouding around the cavernous carotid artery.
Creator: The Hearing Journal
Duration: 00:10
Video 3. Coronal (parallel to the face superiorly-inferiorly) CT ofthe left temporal bone showing the tegmen mastoideum (roof ofmastoid) defect with meningocele or encephalocele in antrum.
Creator: The Hearing Journal
Duration: 00:10
Video 2. Axial (horizontal) CT of the left temporal bone showing the otosclerosis and enlarged vestibular aqueduct.
Creator: The Hearing Journal
Duration: 00:10
Video 3. Coronal (parallel to the face superiorly-inferiorly) CT of the right temporal bone showing the enlarged vestibular aqueduct in the coronal direction.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Coronal (parallel to the face superiorly-inferiorly) CT of the left temporal bone showing the enlarged vestibular aqueduct in the coronal direction.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Axial (horizontal) CISS -sequence MRI does not show significant hyperintensity in the vestibular aqueduct.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Coronal (parallel to the face superiorly-inferiorly) CT of the right temporal bone showing a thin tegmen mastoideum (roof of mastoid) with no encephalocele.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Sagittal (looking outside-in from laterally) CT of the temporal bone showing the sagittal anatomy of the encephalocele and its relationship with the ossicles.
Creator: The Hearing Journal
Duration: 0:10
Video 1. Axial (horizontal) CT of the right temporal bone showing the sigmoid sinus diverticulum.
Creator: The Hearing Journal
Duration: 0:10
Video 2. Axial (horizontal) CT of the left temporal bone showing the full defect of the posterior cranial fossa.
Creator: The Hearing Journal
Duration: 0:11
Video 3. Coronal (parallel to the face superiorly-inferiorly) CT of the right temporal bone showing the relationship between the sigmoid and mastoid.
Creator: The Hearing Journal
Duration: 00:15
Video 1. Axial (horizontal) CT of the right temporal bone showing the changes in the anterior ear canal.
Creator: The Hearing Journal
Duration: 00:10
Video 5. Sagittal (vertical, parallel to auricle) CT of the right temporal bone showing the extent of changes to anterior ear canal and TMJ.
Creator: The Hearing Journal
Duration: 00:10
Video 1. Axial CISS MRI showing the mass and its relationship with the IAC.
Creator: The Hearing Journal
Duration: 00:10
Video 6. Coronal CT of right temporal bone showing some widening of the cochlear nerve canal at the cochlea.
Creator: The Hearing Journal
Duration: 0:09
Video 1. Axial (horizontal) CT of the temporal bone on the right shows the cochlear aplasia.
Creator: The Hearing Journal
Duration: 0:09
Video 3. Coronal (vertical parallel to the face) CT of the right temporal bone shows the relationship between the semicircular canals and dilated vestibule.
Creator: The Hearing Journal
Duration: 0:10
Video 5. Coronal (vertical parallel to the face) CT of the left temporal bone shows the relationship between the common cavity and facial nerve.
Creator: The Hearing Journal
Duration: 00:10
Video 2. For comparison: Axial CT of the right temporal bone showing the jugular bulb in its normal position below the middle ear
Creator: The Hearing Journal
Duration: 00:09
Video 3. Coronal (vertical) CT of the left temporal bone in the plane of the posterior semicircular canal showing the jugular bulb in its course.
Creator: The Hearing Journal
Duration: 00:09
Video 4. Poschl view CT (parallel to the superior semicircular canal) of the left temporal bone showing an intact superior semicircular canal.
Creator: The Hearing Journal
Duration: 00:12
Video 1. Axial (horizontal) CT of the right temporal bone showing the defect in the previous mastoidectomy and soft tissue/fluid and air in the mastoid.
Creator: The Hearing Journal
Duration: 00:11
Video 5. Axial CT of the brain when the patient had meningitis showing fluid in the mastoid on the right side (left side of images).
Creator: The Hearing Journal
Duration: 00:08
Video 6. Axial T2-weighted MRI of the brain showing fluid in the right mastoid (left side of images) at the time of the meningitis.
Creator: The Hearing Journal
Duration: 00:09
Video 1. Axial (horizontal cut) CT of the right temporal bone showing the previous mastoidectomy defect and the mass in the ear canal.
Creator: The Hearing Journal
Duration: 00:12
Video 4. Axial T1-weighted post-gadolinium MRI of the right temporal bone showing the mass in the ear canal is not enhancing (bright).
Creator: Toni Bacala
Duration: 00:10
Video 6. Axial T2-weighted MRI showing isointense mass (similar color to brain).