Acute Multiple Sclerosis Lesion: Conversion of Restricted Diffusion Due to Vasogenic Edema
نویسندگان
چکیده
منابع مشابه
Acute demyelinating lesions with restricted diffusion in multiple sclerosis.
BACKGROUND AND OBJECTIVES It is widely accepted that typical acute demyelinating lesions in relapsing-remitting multiple sclerosis (RRMS) exhibit vasogenic edema with increased diffusion, as demonstrated by an increased apparent diffusion coefficient on MRI. In contrast, acute ischemic lesions demonstrate cytotoxic edema with restricted diffusion. Recent reports have documented selected cases o...
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In eclampsia, MR imaging shows reversible T2 hyperintensities in a parietal and occipital distribution. Findings on diffusion-weighted images suggest that these abnormalities are areas of vasogenic edema. We describe the presence of both cytotoxic and vasogenic edema, as detected by diffusion-weighted imaging, in a woman with eclampsia. Follow-up MR imaging showed that the regions of cytotoxic ...
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A 35-year-old woman with no previous medical history presented with a 3-day history of progressive left hemisensory loss, ataxia and hemiparesis. On neurological examination she had Medical Research Council (MRC) grade 4 pyramidal weakness, hyper-reflexia and mild incoordination on the left side. Sensory examination revealed decreased light touch, pain, temperature, vibration sense and proprioc...
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Brain edema (BE) research lacks quantitative regional methods. We modified the method of Pappius and McCann (1969), who used radioactive iodinated P serum albumin (R1SA) as a label for vasogenic BE fluid. To correct for intravascular plasma volume we used Cr^ labelled red blood cells and calculated equivalent extravascular plasma volume (EVPV). The modified RISA method was compared with a stand...
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conclusion these data indicate that while ce-mri will depict more positive results, there are cases in which dwi will show a positive result while ce-mri is negative. we suggest that the combination of these two imaging modalities might yield more positive results in diagnosing acute ms attack giving rise to a more accurate diagnosis. results ce-mri yielded positive results for 61 (87%) patient...
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ژورنال
عنوان ژورنال: Journal of Neuroimaging
سال: 2011
ISSN: 1051-2284
DOI: 10.1111/j.1552-6569.2009.00443.x