eMedicine Specialties > Neurology > Neuro-imaging

Magnetic Resonance Imaging in Acute Stroke: Multimedia

Author: Souvik Sen, MD, MS, FAHA,, Associate Professor of Neurology, Founding Director of UNC Hospital Stroke Center, Director of Neurovascular Residency, Department of Neurology, University of North Carolina at Chapel Hill
Contributor Information and Disclosures

Updated: Jul 15, 2009

Multimedia

Magnetic resonance imaging in acute stroke. Left:...Media file 1: Magnetic resonance imaging in acute stroke. Left: Diffusion-weighted MRI in acute ischemic stroke performed 35 minutes after symptom onset. Right: Apparent diffusion coefficient (ADC) map obtained from the same patient at the same time.
Magnetic resonance imaging in acute stroke. Left:...

Magnetic resonance imaging in acute stroke. Left: Diffusion-weighted MRI in acute ischemic stroke performed 35 minutes after symptom onset. Right: Apparent diffusion coefficient (ADC) map obtained from the same patient at the same time.

Magnetic resonance imaging in acute stroke. Left:...Media file 2: Magnetic resonance imaging in acute stroke. Left: Perfusion-weighted MRI of a patient who presented 1 hour after onset of stroke symptoms. Right: Mean transfer time (MTT) map of the same patient.
Magnetic resonance imaging in acute stroke. Left:...

Magnetic resonance imaging in acute stroke. Left: Perfusion-weighted MRI of a patient who presented 1 hour after onset of stroke symptoms. Right: Mean transfer time (MTT) map of the same patient.

Magnetic resonance imaging in acute stroke. Diff...Media file 3: Magnetic resonance imaging in acute stroke. Diffusion-perfusion mismatch in acute ischemic stroke. The perfusion abnormality (right) is larger than the diffusion abnormality (left), indicating the ischemic penumbra, which is at risk of infarction.
Magnetic resonance imaging in acute stroke. Diff...

Magnetic resonance imaging in acute stroke. Diffusion-perfusion mismatch in acute ischemic stroke. The perfusion abnormality (right) is larger than the diffusion abnormality (left), indicating the ischemic penumbra, which is at risk of infarction.

The diffusion-weighted MRI reveals a region of hy...Media file 4: The diffusion-weighted MRI reveals a region of hypointensity in the distribution of the right middle cerebral artery. Flanking the anterior and posterior regions of this abnormality are regions of hyperintensities, which represent regions of new infarct. The contiguity of these regions suggests that they are extensions of the old infarct.
The diffusion-weighted MRI reveals a region of hy...

The diffusion-weighted MRI reveals a region of hypointensity in the distribution of the right middle cerebral artery. Flanking the anterior and posterior regions of this abnormality are regions of hyperintensities, which represent regions of new infarct. The contiguity of these regions suggests that they are extensions of the old infarct.

More on Magnetic Resonance Imaging in Acute Stroke

Overview: Magnetic Resonance Imaging in Acute Stroke
Differential Diagnoses & Workup: Magnetic Resonance Imaging in Acute Stroke
Follow-up: Magnetic Resonance Imaging in Acute Stroke
Multimedia: Magnetic Resonance Imaging in Acute Stroke
References

References

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Further Reading

Keywords

cerebrovascular accident, CVA, acute ischemic stroke, cerebrovascular disease, T1-weighted imaging, T2-weighted imaging, spin density–weighted imaging, gradient echo imaging, diffusion-weighted imaging, perfusion-weighted imaging, MRI, MRI in acute stroke

Contributor Information and Disclosures

Author

Souvik Sen, MD, MS, FAHA,, Associate Professor of Neurology, Founding Director of UNC Hospital Stroke Center, Director of Neurovascular Residency, Department of Neurology, University of North Carolina at Chapel Hill
Souvik Sen, MD, MS, FAHA, is a member of the following medical societies: American Academy of Neurology, American Heart Association, and Association for Patient Oriented Research
Disclosure: Nothing to disclose.

Medical Editor

Draga Jichici, MD, FRCP, Associate Clinical Professor, Department of Medicine, Division of Neurology and Critical Care Medicine, McMaster University, Canada
Disclosure: Nothing to disclose.

Pharmacy Editor

Francisco Talavera, PharmD, PhD, Senior Pharmacy Editor, eMedicine
Disclosure: eMedicine Salary Employment

Managing Editor

Howard S Kirshner, MD, Professor of Neurology, Psychiatry and Hearing and Speech Sciences, Vice Chairman, Department of Neurology, Vanderbilt University School of Medicine; Director, Vanderbilt Stroke Center; Program Director, Stroke Service, Vanderbilt Stallworth Rehabilitation Hospital; Consulting Staff, Department of Neurology, Nashville Veterans Affairs Medical Center
Howard S Kirshner, MD is a member of the following medical societies: Alpha Omega Alpha, American Academy of Neurology, American Heart Association, American Medical Association, American Neurological Association, American Society of Neurorehabilitation, National Stroke Association, Phi Beta Kappa, and Tennessee Medical Association
Disclosure: Boehringer Ingelheim Honoraria Speaking and teaching; BMS/Sanofi Honoraria Speaking and teaching; Novartis Honoraria Speaking and teaching

Chief Editor

Helmi L Lutsep, MD, Professor, Department of Neurology, Oregon Health & Science University; Associate Director, Oregon Stroke Center
Helmi L Lutsep, MD is a member of the following medical societies: American Academy of Neurology and American Stroke Association
Disclosure: Co-Axia Consulting fee Review panel membership; Talecris Consulting fee Review panel membership; AGA Medical Consulting fee Review panel membership; Boehringer Ingelheim Honoraria Speaking and teaching; Concentric Medical Consulting fee Review panel membership; Abbott Consulting fee Consulting; Sanofi  Consulting

 
 
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