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Training Collections
Library Memberships
On-demand course library with video lectures, expert case reviews, and more
Fellowship Certificate™ Programs
Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
Ultimate Learning Pass
Unlock access to our full Course Library and all self-paced Fellowships.
Noon Conference (Free)
Get access to free live lectures, every week, from top radiologists.
Case of the Week (Free)
Get a free weekly case delivered right to your inbox.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal Imaging
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For Training Programs
Supplement your training program with case-based learning for residents, registrars, fellows, and more.
For Private Practices
Upskill in high growth, advanced imaging areas.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
Lesson
Orbital Imaging Protocols
4 topics, 10 min.
Lesson
Orbit Anatomy
10 topics, 19 min.
Lesson
Case Review - Ocular Pathology
17 topics, 1 hr. 11 min.
Anterior Globe Rupture with Laterally Dislocated Cataract
4 m.Foreign Body in Globe
4 m.Wood Foreign Body and Ocular Hypotony
2 m.Hemmorhage in Both Chambers, Open Globe
3 m.Staphyloma
4 m.Persistent Hyperplastic Primary Vitreous (PHPV)
5 m.Retinal Detachment
3 m.Retinoblastoma on CT
4 m.Retinoblastoma on MRI
9 m.Bilateral Retinoblastoma
7 m.Ocular Pathology - Review
11 m.Endophthalmitis
3 m.PHPV Review, Coloboma, and Staphyloma
5 m.Phthisis Bulbi, Macrophthalmia, and Microphthalmia
4 m.Ocular Calcification
4 m.Retinoblastoma - Review
5 m.Choroidal Melanoma
3 m.Lesson
Case Review - Intraconal Pathology
15 topics, 1 hr. 8 min.
Intraconal, Conal and Extraconal Anatomy
1 m.Intraconal Hemangioma
5 m.Venous Vascular Malformation
3 m.Optic Nerve Glioma, NF1
4 m.Optic pathway glioma (pilocytic astrocytoma)
4 m.Optic Neuritis, Multiple Sclerosis
6 m.Optic Neuritis, Multiple Sclerosis (2)
7 m.Neuromyelitis Optica Spectrum Disorder
5 m.Neuromyelitis Optica With Spinal Cord Involvement
3 m.Optic Nerve Sheath Meningioma
5 m.Bilateral Optic Neuritis, Leukemia
6 m.Intraconal Pathology - Review
11 m.Optic Neuritis - Review
5 m.Optic Nerve Glioma - Review
4 m.Optic Nerve Sheath Meningioma - Review
6 m.Lesson
Case Review - Conal Lesions
5 topics, 16 min.
Lesson
Case Review - Extraconal Injuries and Abnormalities
18 topics, 55 min.
Extraconal Pathology - Introduction
1 m.Periorbital Cellulitis & Abscess
4 m.Type 3 Orbital Infection
3 m.Solitary Fibrous Tumor
4 m.Langerhans Cell Histiocytosis
2 m.Juvenile Ossifying Fibroma
2 m.Perineural Spread of Squamous Cell Carcinoma
5 m.Proptosis from Extraosseous Extension of Prostate Metastasis
3 m.Orbital Floor Fracture
5 m.Orbital Floor Fracture with Muscle/Fat Herniation
4 m.Orbital Floor Fracture: Status Post Repair
2 m.Bilateral Orbital Fracture Repair
2 m.Periorbital Cellulitis - Review
5 m.Orbital Pseudotumor - Review
3 m.Orbital Wall Abnormalities - Review
3 m.Orbital Fracture - Review
7 m.Giant Cell Reparative Granuloma
3 m.Granulomatous Sinusitis with IgG4-related Ophthalmic Disease
4 m.Lesson
Case Review - Orbital Appendage Pathology
6 topics, 19 min.
0:01
This is a coronal,
0:02
post gadolinium fat-suppressed image of the orbit.
0:06
In this case,
0:07
we are relatively far anteriorly and therefore,
0:11
we can see the lacrimal gland on both sides.
0:16
And we are seeing the globe.
0:19
You notice the paranasal sinuses and the enhancement
0:23
of the mucosa of the ethmoid sinuses.
0:27
If we scroll more posteriorly, we come to the muscle cone.
0:32
Here we are seeing the lateral rectus muscle,
0:34
inferior rectus muscle and medial rectus muscle
0:39
as well as the superior rectus muscle.
0:41
The superior oblique is seen in the superior medial corner.
0:46
Within the muscle cone,
0:47
we have the intraconal space
0:51
and we have, outside the muscle cone,
0:53
the extraconal space.
0:55
In this situation,
0:58
the optic nerve on the left side is not well seen.
1:04
And again, you notice the enhancing optic nerve of
1:08
optic neuritis on the right side
1:10
in this same case of optic neuritis.
1:13
Continuing further posteriorly,
1:15
we observe the optic nerves going through the optic
1:19
canal, and eventually coming to the optic chiasm,
1:22
which is just beyond the infundibular stalk
1:26
and the pituitary gland. The inferior oblique muscle
1:31
is what is seen underneath the globe and further
1:36
lateral to the inferior rectus muscle.
1:39
And this is one of the smallest of the muscles
1:42
and is not well visualized typically.
Coronal Anatomy on MRI
HIDEInteractive Transcript
0:01
This is a coronal,
0:02
post gadolinium fat-suppressed image of the orbit.
0:06
In this case,
0:07
we are relatively far anteriorly and therefore,
0:11
we can see the lacrimal gland on both sides.
0:16
And we are seeing the globe.
0:19
You notice the paranasal sinuses and the enhancement
0:23
of the mucosa of the ethmoid sinuses.
0:27
If we scroll more posteriorly, we come to the muscle cone.
0:32
Here we are seeing the lateral rectus muscle,
0:34
inferior rectus muscle and medial rectus muscle
0:39
as well as the superior rectus muscle.
0:41
The superior oblique is seen in the superior medial corner.
0:46
Within the muscle cone,
0:47
we have the intraconal space
0:51
and we have, outside the muscle cone,
0:53
the extraconal space.
0:55
In this situation,
0:58
the optic nerve on the left side is not well seen.
1:04
And again, you notice the enhancing optic nerve of
1:08
optic neuritis on the right side
1:10
in this same case of optic neuritis.
1:13
Continuing further posteriorly,
1:15
we observe the optic nerves going through the optic
1:19
canal, and eventually coming to the optic chiasm,
1:22
which is just beyond the infundibular stalk
1:26
and the pituitary gland. The inferior oblique muscle
1:31
is what is seen underneath the globe and further
1:36
lateral to the inferior rectus muscle.
1:39
And this is one of the smallest of the muscles
1:42
and is not well visualized typically.
Report
Description
Faculty
David M Yousem, MD, MBA
Professor of Radiology, Vice Chairman and Associate Dean
Johns Hopkins University
Tags
Orbit
Non-infectious Inflammatory
Neuroradiology
Neuro
MRI
Head and Neck
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