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Lesson
Inner Ear
49 topics, 3 hr. 16 min.
Inner Ear Preview
2 m.Inner Ear – Introduction
2 m.Anatomy of the Internal Auditory Canal (IAC)
8 m.Coronal Anatomy of the Inner Ear
4 m.Axial IAC Anatomy and Otospongiosis/Otosclerosis
6 m.Coronal IAC Anatomy and Facial Nerve Segments
6 m.MRI imaging techniques and cochlea aplasia
7 m.IAC Congenital Lesions & Syndromes - Summary
7 m.Cochlear Hypoplasia
8 m.Cochlear Nerve Deficiency, Pontine Tegmental Cap Dysplasia
5 m.Bilateral Cochlea Nerve Deficiency
5 m.Labyrinthine Dysplasia/Syndromes - Summary
10 m.Incomplete Partition Type 1
3 m.Incomplete Partition Type 2 – Summary
3 m.Bilateral Incomplete Partition Type 2
3 m.Mondini Malformation, Incomplete Partition Type II
2 m.Incomplete Partition Type II, Mondini Malformation, Semicircular Canal Abnormality
3 m.Vestibular Malformation
3 m.Enlarged Endolymphatic Sac
2 m.Incomplete Partition Type III – Summary
4 m.Down Syndrome – Summary
6 m.Down Syndrome, Semicircular Canal Deformity, Cochlear Aperture Stenosis
6 m.Down Syndrome, Aperture Stenosis
6 m.Cochlear Hypoplasia and Aperture Stenosis - Summary
4 m.Semicircular Canal (SCC) Dehiscence – Summary
4 m.Semicircular Canal (SCC) Dehiscence
3 m.Semicircular Canal (SCC) – Oblique Reformat
2 m.Inflammatory/Infectious Lesions of the Inner Ear - Summary
7 m.Labyrinthitis, Secondary to Otomastoiditis
3 m.Labyrinthine Fistula Mastoidectomy and Cochlea implant
3 m.Viral Labyrinthitis
3 m.Otospongiosis (Otosclerosis) - Summary
10 m.Bilateral Otospongiosis (Otosclerosis)
5 m.Bilateral Retrofenestral Otospongiosis
4 m.Bilateral Otospongiosis and SCC Dehiscence
3 m.Otospongiosis, Left Stapedectomy
3 m.Labyrinthitis Ossificans – Summary
11 m.Post Traumatic Labyrinthitis Ossificans
3 m.Labyrinthitis Ossificans, Cochlear Turn
2 m.Labyrinthitis Ossificans, Superior SCC
2 m.Unilateral Labyrinthine Ossificans
2 m.Petrous Apex Lesions
8 m.Right Cholesterol Granuloma
5 m.Intravestibular/Labyrinthine schwannoma
3 m.Labyrinthine Schwannoma
4 m.Left Side Labyrinthine/Vestibule Schwannoma
2 m.Endolymphatic Sac Tumor (ELST) – Summary
4 m.Endolymphatic Sac Tumor and VHL
4 m.Inner Ear Malignant Neoplasm and Trauma Closing Points
6 m.0:01
Hi. My name is Dave Yousem,
0:03
and I am a professor of Neuroradiology at the
0:05
Johns Hopkins University School of Medicine.
0:08
If you've been following along with the mastery courses,
0:10
you know that we've previously looked at the external
0:13
ear and the external auditory canal as one course.
0:17
We did a second course on the middle ear anatomy and
0:20
pathology, and we've come to the final temporal bone
0:24
and session, and that is on the inner ear.
0:28
So let's dive right in. With inner ear imaging,
0:32
we have dominated with CT scanning for
0:37
the pathology of the inner ear.
0:39
MRI is usually complementary to CT in identifying
0:44
the membranous labyrinth,
0:46
the nerves themselves, and the various pathology
0:51
associated with the internal auditory canal.
0:53
Now, the internal auditory canal has
0:55
already been addressed by
0:57
Dr. Mukherjee, so we will just be dealing with
0:59
the inner ear proper in this course.
1:02
The techniques that we use are
1:05
high-resolution CT scanning.
1:07
The CT scanning is typically done in the axial plane
1:11
with submillimeter-thin slices that are then
1:15
reconstructed with multiplanar reconstructions
1:18
in the coronal and sagittal planes. That said,
1:22
you can do reconstructions with the 3D dataset in any
1:25
plane, and those are employed in particular when looking
1:29
for superior semicircular canal dehiscence syndrome,
1:34
in which case, we have spiral reconstructions
1:37
around the superior semicircular canal.
Inner Ear – Introduction
HIDEInteractive Transcript
0:01
Hi. My name is Dave Yousem,
0:03
and I am a professor of Neuroradiology at the
0:05
Johns Hopkins University School of Medicine.
0:08
If you've been following along with the mastery courses,
0:10
you know that we've previously looked at the external
0:13
ear and the external auditory canal as one course.
0:17
We did a second course on the middle ear anatomy and
0:20
pathology, and we've come to the final temporal bone
0:24
and session, and that is on the inner ear.
0:28
So let's dive right in. With inner ear imaging,
0:32
we have dominated with CT scanning for
0:37
the pathology of the inner ear.
0:39
MRI is usually complementary to CT in identifying
0:44
the membranous labyrinth,
0:46
the nerves themselves, and the various pathology
0:51
associated with the internal auditory canal.
0:53
Now, the internal auditory canal has
0:55
already been addressed by
0:57
Dr. Mukherjee, so we will just be dealing with
0:59
the inner ear proper in this course.
1:02
The techniques that we use are
1:05
high-resolution CT scanning.
1:07
The CT scanning is typically done in the axial plane
1:11
with submillimeter-thin slices that are then
1:15
reconstructed with multiplanar reconstructions
1:18
in the coronal and sagittal planes. That said,
1:22
you can do reconstructions with the 3D dataset in any
1:25
plane, and those are employed in particular when looking
1:29
for superior semicircular canal dehiscence syndrome,
1:34
in which case, we have spiral reconstructions
1:37
around the superior semicircular canal.
Report
Description
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Temporal bone
Neuroradiology
MRI
Idiopathic
Head and Neck
CT
Brain
Acquired/Developmental
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