Ischemic stroke MRI: Difference between revisions
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==Overview== | ==Overview== | ||
==MRI== | ==MRI== | ||
For diagnosing ischemic stroke in the emergency setting:<ref name="pmid17258669">{{cite journal | last=Chalela | first=J | coauthors=Kidwell C, Nentwich L et al. | title=Magnetic resonance imaging and computed tomography in emergency assessment of patients with suspected acute stroke: a prospective comparison | journal=Lancet | volume=369 | issue=9558 | pages=293-8 | year=2007 | url=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pubmed&pubmedid=17258669 | pmid=17258669 | accessdate=2008-01-22 }}</ref> | MR diffusion weighted imaging is the most sensitive and specific test for diagnosing ischemic stroke and may help detect presence of infarction in few minutes of onset of symptoms. It may also help differentiate viable tissue from infarct area if combined with MR perfusion. For diagnosing ischemic stroke in the emergency setting:<ref name="pmid17258669">{{cite journal | last=Chalela | first=J | coauthors=Kidwell C, Nentwich L et al. | title=Magnetic resonance imaging and computed tomography in emergency assessment of patients with suspected acute stroke: a prospective comparison | journal=Lancet | volume=369 | issue=9558 | pages=293-8 | year=2007 | url=http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pubmed&pubmedid=17258669 | pmid=17258669 | accessdate=2008-01-22 }}</ref> | ||
[[MRI scan]] | [[MRI scan]] | ||
Revision as of 15:55, 15 November 2016
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Ischemic Stroke Microchapters |
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Diagnosis |
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Treatment |
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Case Studies |
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Ischemic stroke MRI On the Web |
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American Roentgen Ray Society Images of Ischemic stroke MRI |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]Associate Editor(s)-in-Chief: Aysha Anwar, M.B.B.S[2]
Overview
MRI
MR diffusion weighted imaging is the most sensitive and specific test for diagnosing ischemic stroke and may help detect presence of infarction in few minutes of onset of symptoms. It may also help differentiate viable tissue from infarct area if combined with MR perfusion. For diagnosing ischemic stroke in the emergency setting:[1]
- sensitivity= 83%
- specificity= 98%
MRI scan
- sensitivity= 81%
- specificity= 100%
For detecting chronic hemorrhages, an MRI scan is more sensitive.[2]
For the assessment of stable stroke, nuclear medicine scans SPECT and PET/CT may be helpful. SPECT documents cerebral blood flow and PET with FDG isotope the metabolic activity of the neurons.
Patient No 1: Change in Mental Status
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MRI - DWI
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MRI - FLAIR
Patient No 2: Left ACA Infarction
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MRI - T2
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MRI - T1
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MRI - ADC
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MRI- DWI
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MRI- DWI
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MRI- DWI
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MRI- DWI
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MRI- FLAIR
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MRI- FLAIR
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MRI- ADC
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MRI- A
References
- ↑ Chalela, J (2007). "Magnetic resonance imaging and computed tomography in emergency assessment of patients with suspected acute stroke: a prospective comparison". Lancet. 369 (9558): 293–8. PMID 17258669. Retrieved 2008-01-22. Unknown parameter
|coauthors=ignored (help) - ↑ Kidwell, C (2004). "Comparison of MRI and CT for detection of acute intracerebral hemorrhage". JAMA. 292 (15): 1823–30. PMID 15494579. Retrieved 2008-01-22. Unknown parameter
|coauthors=ignored (help)