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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
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.
Emergency Call Prep
Prepare trainees to be on call for the emergency department with this specialized training series.
Lesson
Pre-Course Activities
1 topic, 3 min.
Lesson
Introduction to Stroke Imaging
4 topics, 17 min.
Lesson
Noncontrast CT
5 topics, 14 min.
Lesson
CTA Neck
10 topics, 33 min.
Vascular Imaging in Stroke - CTA vs MRA
2 m.Carotid and Vertebral Vasculopathies Overview & Examples of Atherosclerotic Disease
3 m.Case - Atheromatous Disease with Severe ICA Stenosis
4 m.Carotid & Vertebral Artery Dissection Overview & Examples
3 m.Case - Embolic Stroke with ICA Dissection
5 m.Collagen Vascular Diseases Overview - Examples of FMD, Carotid Web
2 m.Case - Fibromuscular Dysplasia (FMD)
5 m.Case - Ehlers Danlos
7 m.Inflammatory Conditions with Stroke Symptoms - Examples of Takayasu's, TIPIC
4 m.Case - Takayasu’s Arteritis
4 m.Lesson
CTA Head
9 topics, 37 min.
CTA Head in Acute Stroke - Source Images, MIPS, Collaterals
4 m.Case - MCA Stem Embolus with Good Collaterals
5 m.Case - MCA Stem Embolus with Poor Collaterals
4 m.Case - Basilar Tip Thrombus
6 m.Circle of Willis Stenoses: Differential Diagnoses
2 m.Case - Moya Moya disease
6 m.Case - Reversible Cerebral Vasoconstrictive Syndrome (RCVS)
5 m.Case - Primary Angiitis of the CNS (PACNS)
7 m.Infectious Causes of Multifocal Circle of Willis Stenosis
2 m.Lesson
CT Perfusion
3 topics, 15 min.
Lesson
MRI (DWI, FLAIR, SWI) of Acute Stroke
3 topics, 14 min.
Lesson
MRA of Head and Neck
6 topics, 18 min.
Lesson
Multifocal Strokes With No Visualized Vascular Abnormality
6 topics, 26 min.
Lesson
Brain Ischemia, Hypoxia, & Death
6 topics, 16 min.
Lesson
Stroke Mimics & Other Causes of Restricted Diffusion
7 topics, 18 min.
Stroke Mimics - Other Causes of Restricted Diffusion
2 m.Case - Seizure (Stroke Mimic)
4 m.Case - MELAS (Stroke Mimic)
3 m.Case - Hypoglycemia (Stroke Mimic)
3 m.Case - Herpes Virus Encephalitis (Stroke Mimic)
4 m.Case - Osmotic Demyelination Syndrome (Stroke Mimic)
3 m.Case - Brain Metastases (Stroke Mimic)
4 m.Lesson
MR Perfusion
8 topics, 17 min.
MR Perfusion - Data, Maps and Uses
4 m.Case - MR Perfusion Target Mismatch (Good Collaterals)
2 m.Case - MR Perfusion Target Mismatch (Poor Collaterals)
3 m.Case - Ischemia Detected Only on MR Perfusion (Case 1)
2 m.Case - Ischemia Detected Only on MR Perfusion (Case 2)
3 m.Arterial Spin Labelling Perfusion - Usage Examples
3 m.Case - ASL Matched Defect
2 m.Case - ASL Showing Tissue at Risk
2 m.Lesson
Subacute Stroke & Differentials
5 topics, 13 min.
0:00
These are images of an 83-year-old
0:02
male with confusion, neglect,
0:05
and some left-sided weakness.
0:08
And you can see on the DWI, he's got an
0:12
large infarct involving the left posterior
0:14
insula, the right temporal lobe,
0:16
and extending up into the inferior parietal lobe.
0:19
And when we inspect the ASL images,
0:21
you can see the defects matched
0:23
between the ASL and DWI images.
0:26
So, it's an MCA inferior division infarct.
0:29
It's a completed infarct.
0:31
The infarct shouldn't extend.
0:34
Here are the FLAIR images.
0:35
You can see on the FLAIR images,
0:36
there's some effacement of sulci and a little mass
0:41
effect on the atrium and lateral ventricles.
0:43
It's already in the subacute stage, continues
0:46
to be dark on ADC maps as you'd expect.
0:49
And then, just so you can see the vessels.
0:53
Here are the vessels,
0:54
there's an inferior division MCA cutoff,
0:56
the superior division's intact.
0:59
So, this is an example of a matched defect
1:01
on ASL where you don't need aggressive
1:04
treatment because there's not tissue at risk.
Case - ASL Matched Defect
HIDEInteractive Transcript
0:00
These are images of an 83-year-old
0:02
male with confusion, neglect,
0:05
and some left-sided weakness.
0:08
And you can see on the DWI, he's got an
0:12
large infarct involving the left posterior
0:14
insula, the right temporal lobe,
0:16
and extending up into the inferior parietal lobe.
0:19
And when we inspect the ASL images,
0:21
you can see the defects matched
0:23
between the ASL and DWI images.
0:26
So, it's an MCA inferior division infarct.
0:29
It's a completed infarct.
0:31
The infarct shouldn't extend.
0:34
Here are the FLAIR images.
0:35
You can see on the FLAIR images,
0:36
there's some effacement of sulci and a little mass
0:41
effect on the atrium and lateral ventricles.
0:43
It's already in the subacute stage, continues
0:46
to be dark on ADC maps as you'd expect.
0:49
And then, just so you can see the vessels.
0:53
Here are the vessels,
0:54
there's an inferior division MCA cutoff,
0:56
the superior division's intact.
0:59
So, this is an example of a matched defect
1:01
on ASL where you don't need aggressive
1:04
treatment because there's not tissue at risk.
Report
Faculty
Pamela W Schaefer, MD, FACR
Professor of Radiology, Vice Chair of Education
Massachusetts General Hospital
Tags
Vascular Imaging
Neuroradiology
Neuro
MRI
Head and Neck
Brain
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