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Training Collections
Library Memberships
25% OFF!On-demand course library with video lectures, expert case reviews, and more
Fellowship Certificate™ Programs
25% OFF!Practice-focused training programs designed to help you gain experience in a specific subspecialty area.
Ultimate Learning Pass
30% Off!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.
Case Crunch: Rapid Case Review (Free)
Register for free live board reviews.
Dr. Resnick's MSK Conference
Learn directly from the MSK Master himself.
Lower Extremities MRI Conference
Musculoskeletal Imaging
Emergency Imaging
PET Imaging
Pediatric Imaging
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.
Compliance
NewTrack, fulfill, and report on all your radiologists' credentialing and licensing requirements.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
19 topics, 41 min.
Introduction to Gross Anatomy of the Brain
4 m.Frontal Lobar Anatomy
5 m.Sylvian Fissure
3 m.Middle Frontal Gyrus
2 m.Inferior Parietal Lobule
2 m.Central Sulcus of Rolando
3 m.Intraparietal Sulcus
2 m.Localizing the Intraparietal Lobule Part 2
2 m.Localizing the Intraparietal Lobule Part 3
2 m.Pars Marginalis
2 m.Parieto-occipital Sulcus
2 m.Pars Marginalis on Axial Imaging
3 m.Midline Sagittal Commissures
2 m.Basic Brainstem Anatomy
2 m.Midline Cerebellum (Vermis)
3 m.Midline Cisterns and Spaces
2 m.Midline Sagittal Blood Supplies
4 m.Midline Skeletal Anatomy
3 m.Miscellaneous Midline Structures
3 m.52 topics, 2 hr. 14 min.
The Olfactory Nerve – Cranial Nerve I
4 m.The Olfactory Bulb
5 m.The Olfactory Tracts
5 m.The Optic Nerve – Cranial Nerve II
3 m.The Globe and Optic Pathway
5 m.Chiasm & Retrochiasmatic Pathway
3 m.Destinations of Optic Nerve Signals
3 m.The Oculomotor Nerve – Cranial Nerve III
4 m.Oculomotor Nerve: Course, Adjacent Structures & Destination
4 m.Oculomotor Nerve: Nuclei and Intramedullary Course
3 m.Third Nerve Syndromes
5 m.The Trochlear Nerve - Cranial Nerve IV
3 m.Trochlear Nerve: Course and Pathologies
3 m.The Trigeminal Nerve – Cranial Nerve V
3 m.Trigeminal Nerve Synapses in the Brainstem
6 m.Nuclear Anatomy and Position of the Trigeminal System
4 m.Parasympathetic Ganglia Anatomy of the Head and Neck
2 m.MRI anatomy of the Submandibular Ganglion
4 m.MRI Anatomy of the Pterygopalatine Ganglion
3 m.Trigeminal Nerve - V1 Division
2 m.Trigeminal Nerve - V2 Division
2 m.Trigeminal Nerve - V3 Division
3 m.The Abducens Nerve – Cranial Nerve VI
3 m.Cranial Nerves 1-6: Review
3 m.Abducens Nerve Nucleus and Nerve
4 m.Identifying the Cisternal Abducens Nerve
3 m.The Facial Nerve: Nucleus and Intramedullary Course
3 m.The Facial Nerve – Cranial Nerve VII
2 m.Facial Nerve: Medullary, Cisternal, and Canalicular Segments
3 m.Seventh Nerve Segments on MRI
5 m.Facial Nerve: Motor, Sensory, and Parasympathetic Branches
2 m.Proximal Branches of the Facial Nerve
3 m.Distal Branches of the Facial Nerve
2 m.The Posterior Auricular Nerve
2 m.The Greater Petrosal Nerve
2 m.The Vestibulocochlear Nerve – Cranial Nerve VIII
4 m.Cranial Nerves 7 & 8: Cisternal Course at the CPA
2 m.Vestibulocochlear Nerve: Cochlea and Internal Auditory Canal
2 m.Glossopharyngeal Nerve – Cranial Nerve IX
2 m.Glossopharyngeal Nerve Course
2 m.Exit of the Glossopharyngeal Nerve
2 m.Nuclei of the Glossopharyngeal Nerve
3 m.Glossopharyngeal Nerve Summary
2 m.The Vagus Nerve – Cranial Nerve X
2 m.Nuclei of the Vagus Nerve
2 m.The Innervations of the Vagus Nerve
4 m.Function of Vagal Nuclei
3 m.Accessory Nerve – Cranial Nerve XI
2 m.Accessory Nerve Summary
3 m.The Hypoglossal Nerve – Cranial Nerve XII
3 m.The Descent of the Hypoglossal Nerve
2 m.The Real Origin of the Hypoglossal Nerve
2 m.0:00
Let's finish our discussion of cranial nerve number two,
0:04
the optic nerve with a couple of pearls.
0:07
The contralateral nasal retinal projection,
0:11
from the lateral, projecting onto the medial
0:16
aspect of the retina.
0:17
So lateral projecting on medial retina,
0:20
is going to come down,
0:22
and is going to cross over the other side.
0:24
Same thing here,
0:25
projects onto the medial retina,
0:27
comes down and crosses in the optic
0:30
chiasm to the contralateral side.
0:32
In contrast,
0:34
the medial field is going to project onto the
0:38
lateral retina and it's going to
0:41
stay ipsilateral like. So.
0:48
Now, we also said that there are a number of
0:51
which we'll show you in a minute.
0:53
There is a knee or turn of the optic radiation.
0:57
There is an occipital or occipital.
0:59
Temporal and a temporal component of this turn,
1:02
where it will then project onto the Cuneus or
1:07
optic cortex. It'll happen on both sides.
1:10
Now I'm going to scroll up a little bit
1:14
to the level of the calcarine sulcus.
1:19
And at this level, we've got the calcarine cortex.
1:23
And I wanted to high light the synapse
1:26
positions a little bit higher,
1:28
which include the lateral geniculate nucleus,
1:31
which is going to sit right about here on both
1:34
sides. That's going to receive a synapse.
1:36
The superior colliculus,
1:38
that's going to receive a synapse.
1:40
And now we have one final third synapse to add to
1:43
our layering of anatomy for the visual pathway.
1:46
And that is the pulvinar right there.
1:50
So that concludes our discussion of the visual
1:53
pathway. So if we put it all together,
1:56
we've got the globes, we've got the retina,
1:58
we've got the optic Nerve.
2:00
We got the intracanalicular for raminal optic
2:03
nerve. We have the prechiasmatic nerve.
2:05
The optic chiasm a little infundibular recess
2:08
in the middle with a pituitary stalk,
2:11
the optic tracts moving posteriorly,
2:13
a synapse on the superior colliculus and
2:15
the lateral geniculate nucleus,
2:17
a synapse on the pulvinar and
2:19
then continuation back,
2:21
including something known as Meyer's loop that will
2:25
arborize onto the visual cortex in the region of
2:28
the calcarine sulcus which we see right here.
2:31
That concludes our discussion of the visual pathway.
Interactive Transcript
0:00
Let's finish our discussion of cranial nerve number two,
0:04
the optic nerve with a couple of pearls.
0:07
The contralateral nasal retinal projection,
0:11
from the lateral, projecting onto the medial
0:16
aspect of the retina.
0:17
So lateral projecting on medial retina,
0:20
is going to come down,
0:22
and is going to cross over the other side.
0:24
Same thing here,
0:25
projects onto the medial retina,
0:27
comes down and crosses in the optic
0:30
chiasm to the contralateral side.
0:32
In contrast,
0:34
the medial field is going to project onto the
0:38
lateral retina and it's going to
0:41
stay ipsilateral like. So.
0:48
Now, we also said that there are a number of
0:51
which we'll show you in a minute.
0:53
There is a knee or turn of the optic radiation.
0:57
There is an occipital or occipital.
0:59
Temporal and a temporal component of this turn,
1:02
where it will then project onto the Cuneus or
1:07
optic cortex. It'll happen on both sides.
1:10
Now I'm going to scroll up a little bit
1:14
to the level of the calcarine sulcus.
1:19
And at this level, we've got the calcarine cortex.
1:23
And I wanted to high light the synapse
1:26
positions a little bit higher,
1:28
which include the lateral geniculate nucleus,
1:31
which is going to sit right about here on both
1:34
sides. That's going to receive a synapse.
1:36
The superior colliculus,
1:38
that's going to receive a synapse.
1:40
And now we have one final third synapse to add to
1:43
our layering of anatomy for the visual pathway.
1:46
And that is the pulvinar right there.
1:50
So that concludes our discussion of the visual
1:53
pathway. So if we put it all together,
1:56
we've got the globes, we've got the retina,
1:58
we've got the optic Nerve.
2:00
We got the intracanalicular for raminal optic
2:03
nerve. We have the prechiasmatic nerve.
2:05
The optic chiasm a little infundibular recess
2:08
in the middle with a pituitary stalk,
2:11
the optic tracts moving posteriorly,
2:13
a synapse on the superior colliculus and
2:15
the lateral geniculate nucleus,
2:17
a synapse on the pulvinar and
2:19
then continuation back,
2:21
including something known as Meyer's loop that will
2:25
arborize onto the visual cortex in the region of
2:28
the calcarine sulcus which we see right here.
2:31
That concludes our discussion of the visual pathway.
Report
Description
Faculty
Stephen J Pomeranz, MD
Chief Medical Officer, ProScan Imaging. Founder, MRI Online
ProScan Imaging
Tags
Orbit
Neuroradiology
MRI
Head and Neck
Brain
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